CSA
Summary
Read the report at California State Auditor ↗
Red Light Camera
Programs:
Although They Have Contributed to a
Reduction in Accidents, Operational
Weaknesses Exist at the Local Level
July 2002
2001-125
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July 23, 2002 2001-125
The Governor of California
President pro Tempore of the Senate
Speaker of the Assembly
State Capitol
Sacramento, California 95814
Dear Governor and Legislative Leaders:
As requested by the Joint Legislative Audit Committee, the Bureau of State Audits presents its audit report
concerning our review of the implementation, application, and efficacy of red light camera programs statewide.
This report concludes that red light cameras have contributed to a reduction of accidents; however, our review of
a sample of seven local governments found weaknesses in the way they are operating their programs that make
them more vulnerable to legal challenge. Specifically, we found that the local governments we reviewed need to
more rigorously supervise their respective vendors to exercise and maintain control of their programs.
Furthermore, we could not always determine if local governments followed the best practice of first addressing
any needed engineering improvements to the intersections they designated before installing the red light cameras.
In addition, four of the seven local governments in our sample avoided placing cameras at dangerous intersections
along state-owned highways because of the delay involved in obtaining state permission. Moreover, most would
use photographs as evidence in criminal proceedings even though it would appear to conflict with the law governing
the program.
We also found that the local governments in our sample have generally followed the California Department of
Transportation’s required yellow light time interval standards. Finally, only two of the seven local governments
we reviewed have generated significant revenue from their red light camera programs.
Respectfully submitted,
ELAINE M. HOWLE
State Auditor
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CONTENTS
Summary 1
Introduction 5
Chapter 1
Operational Weaknesses Make Red Light Camera
Programs Vulnerable to Legal Challenges 13
Recommendations 45
Chapter 2
Red Light Cameras Improve Traffic
Safety While Generating Little Additional
Revenues for Most Local Governments 47
Recommendation 56
Appendix A
Reasons Local Governments Do Not Enforce Many
Red Light Violations 59
Appendix B
Local Governments That Employ Red Light
Cameras as of April 2002 63
Appendix C
Local Government Accident Studies 65
Appendix D
Accident Rates at Selected Red Light
Camera Intersections 69
Appendix E
Red Light Camera Revenues and Expenditures 77
Responses to the Audit
City of Fremont 79
California State Auditor’s
Comments on the Response
From the City of Fremont 81
City of Long Beach 83
California State Auditor’s
Comments on the Response
From the City of Long Beach 87
Los Angeles County 89
City of Oxnard 93
City of Sacramento 95
California State Auditor’s
Comments on the Response
From the City of Sacramento 99
City of San Diego 101
California State Auditor’s
Comment on the Response
From the City of San Diego 103
City and County of San Francisco 105
1
SUMMARY
RESULTS IN BRIEF
Motorists running red lights are a serious traffic
Audit Highlights . . . problem, and because it is a difficult violation for
a police officer to witness and enforce at the time
Red light cameras have
it is committed, the Federal Highway Administration has
contributed to a reduction of
identified automated enforcement systems—commonly known
accidents; however, our review
of seven local governments as red light cameras—as a measure to address the problem.
found weaknesses in the After the California Legislature authorized their use in 1996,
way they are operating their
several local governments implemented red light cameras at
programs that make them
key intersections to improve traffic safety. Local governments
vulnerable to legal challenge.
Specifically, we found that the use the resulting photographs to identify motorists who drive
local governments: through red lights and send them citations. Because of the advanced
þ Need to more rigorously technology and cost considerations involved, local governments use
supervise vendors to private vendors to provide red light camera equipment and services.
maintain control of
their programs.
Our review found that accidents related to motorists running
þ Do not always follow red lights have generally decreased where local governments
the best practice of have employed cameras. However, the seven local governments
reviewing intersections
we reviewed need to make operational improvements to
for engineering problems
maintain effective control of their programs and comply with
before installing cameras.
state law. The law mandates that only a governmental agency,
þ All but one would use in cooperation with a law enforcement agency, can operate an
photographs as evidence in
automated enforcement system but does not include specific
criminal proceedings even
though it would appear requirements for carrying out this mandate. Although the law
to conflict with the law needs further clarification, we believe that to avoid the legal
governing the program.
challenges that have affected the city of San Diego’s program,
þ Generally follow local governments need to rigorously oversee the vendors
required time intervals that provide red light camera services. Further, we could not
for yellow lights. always determine if local governments addressed engineering
improvements to the intersections they chose before installing
Of the local governments
we visited, only San Diego cameras. Although the most common reason for choosing red
and Oxnard have generated light camera sites was traffic safety, four local governments out
significant revenue from their
of the seven in our sample avoided placing cameras at some of
red light camera programs.
the dangerous intersections along state-owned highways. The
Our review of available data cities of Fremont, Long Beach, and San Diego anticipated that
shows that red light accident
obtaining state permission would delay their programs and
rates decreased between
3 percent and 21 percent Los Angeles County indicated it did not consider state-owned
after red light cameras were highways for its program. Local governments also have differing
installed by five of the local
interpretations concerning the use of photos taken. Most believe
governments in our sample.
they have a legal basis for using them for purposes other than
1
to prosecute red light violations, which appears to conflict with
the enabling legislation. These and other operational weaknesses
make red light camera programs vulnerable to legal challenge.
Despite operational concerns, our review of the available data
shows that accidents caused by red light violations usually
decrease after the introduction of red light cameras. For five
local governments we visited, the number of accidents decreased
between 3 percent and 21 percent after implementation of red
light cameras, but accidents increased by 5 percent for the sixth.
Fremont attributed the increase in accidents to higher traffic
volume. Accident statistics were not available for Long Beach as
the program is still too new. Statewide collision data indicates
a 10 percent drop in accidents caused by motorists running red
lights in areas with red light cameras compared to no change in
the number of accidents in other areas. Even more telling, after
San Diego suspended use of its program in June 2001, accidents
caused by red light violations increased citywide by 14 percent,
based on the four months of data we were able to obtain.
Finally, local governments themselves make little or no profit
from their programs. Only two of the programs we reviewed
made significant revenues.
RECOMMENDATIONS
We recommended that local governments take several actions
to ensure that they comply with state law for using red light
cameras, maintain control over their programs, and minimize
the risk for legal challenges. These actions include conducting
more rigorous oversight of vendors, establishing shorter periods
for destroying certain confidential information, developing
added controls to ensure that vendors only mail authorized
and approved citations, and periodically inspecting red light
camera intersections. Before installing red light cameras, local
governments should consider whether engineering measures
would improve traffic safety and be more effective in addressing
red light violations. Finally, to avoid overlooking dangerous
intersections that are state owned, local governments should
diligently pursue the required state approvals, despite any
resulting delays to installing their cameras.
To remove the ambiguity regarding whether a local government
or a vendor is operating a red light camera system, the Legislature
should clarify the law to define which tasks a local government
must perform to operate a red light camera program and which
2 3
tasks can be delegated to a vendor providing red light camera
services. Further, to eliminate ambiguity regarding the
admissibility of evidence, the Legislature should consider
clarifying the enabling legislation to state whether photographs
taken by red light cameras can be used for other law
enforcement purposes.
AGENCY COMMENTS
Los Angeles County, the cities of Oxnard and San Diego, and
the city and county of San Francisco generally agreed with our
recommendations and provided some clarifying comments in
their responses. Fremont took exception to our analysis of the
change in accidents before and after the installation of red light
cameras. Long Beach agreed with our recommendations, but its
city auditor took issue with the report for including a high-level
summary of our findings and recommendations. Finally, the
city of Sacramento disagreed with several of our findings, most
notably that it needed added controls to ensure that the vendor
does not mail unauthorized citations. n
2 3
Blank page inserted for reproduction purposes only.
4 5
INTRODUCTION
BACKGROUND
Motorists running red lights cause a significant number
of accidents that are costly both in terms of human
life and financial consequences. According to calendar
year 2000 data we analyzed from the California Highway
Patrol (CHP), 25,014 crashes resulted from red light violations
throughout the State, causing 93 fatalities and 14,868 injuries.
Beyond the human suffering they cause, red light accidents are
also expensive due to the costs of medical, administrative, legal,
and emergency services; rehabilitation for the injured; property
damage; lost earnings; and reduced quality of life. Using data
from the federal government, the CHP estimates that each
fatality costs society $2,600,000; and other red light accidents
cost between $2,000 and $183,000, depending on their severity.
According to the California Vehicle Code, a motorist violates
the red light traffic law by crossing the limit line and proceeding
through an intersection after the light has turned red. Police
officers conducting traditional enforcement at intersections
can issue citations to motorists they observe violating this law.
However, enforcement of red light violations by police officers
can be difficult. To catch a motorist running a red light, an
officer must actually observe the violation. Even if an officer
is present, pursuing the violator could entail putting other
motorists and pedestrians, as well as the officer, at risk of a
collision. Thus, many red light violations are not enforced.
Because of the high percentage of crashes that occur at
intersections and the difficulty police have in enforcing traffic
laws in dense urban areas, the Federal Highway Administration
(FHWA) has identified red light cameras as a measure to be
considered when addressing intersection crashes in conjunction
with any other needed engineering improvements. The Insurance
Institute of Highway Safety (IIHS) reports that red light cameras
have been in use for more than 20 years in Europe and Australia,
but they are relatively new in the United States. In 2001, an
IIHS survey found that 12 states, plus a few cities in Arizona,
Ohio, and Tennessee, have authorized the use of red light
cameras. FHWA studies in the United States show that red light
4 5
cameras reduce violations at enforced intersections and, in some
instances, have the positive spillover effect of reducing red light
violations at intersections without cameras.
Red light cameras are specialized cameras that take still or video
photographs while the traffic signal is red. The cameras are only
operational during the red light phase and take photographs of
vehicles illegally entering the intersection. The local government
and its vendor use the photographs to identify a motorist by
reviewing records from the Department of Motor Vehicles (DMV),
and if they are able to successfully identify the registered owner
of the vehicle and obtain a clear photograph of the motorist,
they send the registered owner a citation. The cameras operate
continuously to provide constant enforcement of the traffic law.
In this sense, a red light camera is more efficient than using a
police officer because it potentially allows the local government
to issue citations to each motorist who runs a red light at
those intersections.
FIGURE 1
Local Governments Enforce Only a Small Percentage of
Potential Violations Recorded by Red Light Cameras
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Source: Vendor reports provided by local governments.
* Motorist activity that does not result in a violation, such as a screeching stop.
† Citations rejected by law enforcement because they are too vulnerable to court challenge.
‡ Unenforced citations that can be resolved by making improvements to the system.
§ Unenforced citations that cannot be resolved by making improvements to the system.
ll Unenforced citations according to the respective local government’s formal or informal
business rules.
6 7
However, local governments are able to enforce only a small
percentage of the total violations recorded by red light
cameras for a number of reasons. For example, the photograph
of a driver or license plate may be too poor to make a
positive identifi cation. As shown in Figure 1, the seven local
governments we visited enforced about 23 percent of the total
number of violations that red light cameras captured during
2001. For additional details regarding the number of citations
issued, see Appendix A.
California took steps to supplement its law enforcement
at signalized intersections when, in 1996, the Legislature
authorized the use of red light camera systems
by local governments. As shown in Figure 2 on
the following page, 20 local governments have
Legal Requirements for
Operating a Red Light Camera installed red light cameras. Two local governments
Program in California have suspended their operations. The city of San Diego
suspended its program on June 1, 2001, and has yet
• Only a governmental agency in
to restart it; and the city and county of Sacramento
cooperation with a law enforcement
agency may operate a red light suspended operations on April 30, 2002, with the
camera program. county restarting its operations on July 1, 2002.
• Signs must clearly indicate the system’s
presence at each intersection or at all
To operate a red light camera program, a local
major entrances to the city or county.
government must follow certain statutory
• Yellow light time intervals must meet
requirements; most notably, it must operate
the California Department of
Transportation’s minimum standards. the program itself in cooperation with a law
• Photographs must be kept confi dential and enforcement agency. The law does not specify what
made available only to governmental and it means to operate a program, but one superior
law enforcement agencies to pursue red
court reasoned that this requirement exists to
light violations.
ensure that the evidence obtained by a red light
• The registered owner or any individual
identifi ed by the registered owner as the camera is trustworthy and reliable. California’s
driver of the vehicle at the time of the red light camera law states that the driver is
violation must be permitted to review the
responsible for the citation, which is treated like
photographic evidence.
a moving violation; in most other states, the
• A citation must be delivered to the
driver within 15 days from the date of citation, like a parking ticket, is the responsibility
the violation. of the registered owner of the vehicle.
Because of the advanced technology used—
high-speed traditional, digital, and video cameras—and
the high cost of red light systems, local governments usually
contract with vendors for use of the necessary equipment and
for fi lm and citation processing services. Also, red light camera
systems require precise assembly, installation, and maintenance,
which private vendors can provide. Three vendors offer red
light camera services in California. Appendix B provides details
on the systems and vendors used by the local governments that
currently employ red light cameras in the State.
6 7
FIGURE 2
Local Governments Currently Operating Red Light Cameras
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Source: Local government and vendor staff.
Note: Names in bold were selected for review. Names in italics have suspended their programs as of July 2002.
8 9
Using criteria established by the local government for issuing a
citation, the vendor initially screens all photographed violations
to eliminate those that are unenforceable. The vendor then
accesses the DMV database to obtain the name,
address, and driver’s license number of the
Services Provided by Red Light registered owner of the vehicle involved in each
Camera Vendors
enforceable violation. The vendor forwards to a
designated law enforcement agency, such as a police
• Installing system equipment
department, a citation containing (1) photographs
• Providing engineering drawings
of the vehicle entering and proceeding through
• Collecting and developing fi lmed pictures
the intersection, (2) a close-up of the person
• Maintaining and servicing cameras
driving, (3) a photograph of the license plate,
• Initially reviewing photographs and (4) identifying information obtained from the
• Screening out unenforceable violations DMV records. After the law enforcement agency
• Mailing approved citations approves it, the vendor mails the citation to the
alleged violator.
• Preparing court evidence packages
The alleged violator may send payment to
the court—$270 or more depending on the
jurisdiction—or contest the violation either by appearing
in court or through a trial by written declaration. An
alleged violator who chooses to contest a citation by written
declaration can submit a statement and other evidence to the court
without the need to appear personally. Because California law
states that the driver committing the violation is responsible for the
citation and that the driver may or may not be the registered owner
of the vehicle, the registered owner can certify that he or she was
not the driver and has the option of identifying who was driving
the vehicle when the violation occurred.
SCOPE AND METHODOLOGY
The Joint Legislative Audit Committee requested that the
Bureau of State Audits perform a statewide review of the
implementation, application, and effi cacy of the use of red
light cameras. We were asked to review a number of specifi c
areas related to red light cameras in use at traffi c intersections,
including the following:
• The roles of local government, including law enforcement
and private vendors, and whether they comply with the law,
including the confi dentiality requirement over photographs
taken by red light cameras.
8 9
• The effectiveness of red light cameras in reducing accidents
and increasing traffic safety at selected intersections.
• The existence or need for standards on site selection, installation
of cameras, and calibration and accuracy of the technology. If
standards did exist, we were to determine whether they were
used consistently.
• To the extent possible, the percentage of red light violations
that occur within one second of a light turning red.
• Whether yellow light intervals at intersections with red light
cameras meet the standards suggested by the California
Department of Transportation (Caltrans) and whether the
intervals differ from intersections without red light cameras
that have similar traffic volumes and speeds.
• The extent that local governments use revenue from red light
citations for traffic safety.
In addition, we were asked to compare the differential in
revenues generated from citations before and after the cameras
were installed with any changes in the number of accidents.
However, we were unable to perform this audit step because,
before implementing their red light camera programs, the
local governments we examined did not separately account for
the revenues they received from red light violations. Instead,
we obtained budget and accounting reports to determine the
revenues and expenditures for the red light camera programs
and whether revenues were used for traffic safety.
To gain an understanding of the requirements for red light
cameras, we reviewed relevant state laws over their use and over
related traffic issues. To understand the extent that red light
cameras are used in California, we contacted local governments
and vendors to develop a complete list of users of red light
cameras. From this list, we selected seven local governments for
review, focusing on programs that had the most cameras and/or
had been in operation the longest. We chose at least one local
government from each of the three main vendors that provide
red light camera services. Lastly, we ensured that our selections
represented different areas throughout the State.
To determine whether the local governments and their vendors
complied with the laws governing the use of red light cameras, we
interviewed program managers and key staff to understand the
programs. In addition, we analyzed the contracts to understand
10 11
the responsibilities of each party. Further, we obtained
reports from city councils and county boards of supervisors
to understand why they decided to employ red light cameras
and then compared the reasons with the legislative intent for
authorizing red light cameras. We also determined whether
the local governments properly notified the public before
implementing their programs. Additionally, we asked how each
local government directs and oversees its vendor’s activities.
Because several lawsuits have been brought concerning red light
cameras, we reviewed the court decisions to determine what
activities were judged not compliant with the law. Finally, we
reviewed the controls that local governments have in place to
ensure that motorists’ photographs, names, and addresses are
kept confidential.
To determine the effect that red light cameras have on increasing
traffic safety, we analyzed accident data from the CHP, which
maintains the Statewide Integrated Traffic Records System
(SWITRS). The SWITRS is a centralized accident database
containing all fatal, injury, and property damage collisions,
including those caused by motorists running red lights, as
reported by local police and sheriff’s departments throughout
the State. Our analysis focused on the change in the average
number of accidents per month that were attributable to
motorists running red lights beginning January 1, 1995—to
provide at least one year of data before the red light camera law
went into effect—and ending September 30, 2001, the most
current SWITRS data available. We reviewed the change in the
average number of accidents per month before and after the
varying implementation dates of red light cameras at both a
statewide level and for each of the seven local governments.
However, we could not include Long Beach in our comparisons
because it did not initiate its program until October 2001. A
statistical consultant assisted us in selecting our methodology.
Although we believe that our analysis indicates how effective red
light cameras are in reducing accidents, we caution that other
factors not readily measurable also likely affected the accident
rates. These other factors could include demographics, traffic
volume, engineering improvements, citation fee increases,
public information campaigns, and other police enforcement
activities. However, other accident studies conducted by various
entities show results similar to ours, as summarized in Appendix C.
10 11
We researched traffic practices and engineering standards
to determine if standards exist for selecting intersections
for enforcement, installing red light cameras, and testing
the calibration and accuracy of the technology. The FHWA
and several national traffic engineering organizations
recommend practices that local governments should follow
when implementing a red light camera program. We checked
to see if the local governments in our sample followed these
recommended practices.
To determine the number of violations that occur within one
second of the light turning red, we requested statistics from the
local governments we visited or their respective vendors.
After the audit was approved, the Legislature passed a new state
law requiring that intersections with red light cameras comply
with the yellow light timing standards established by Caltrans.
We reviewed the signal timing sheets for intersections with red
light cameras in our sample of local governments to determine if
yellow light times complied with Caltrans’ standards rather than
looking at intersections with similar traffic volumes and speeds.
Further, to ensure that yellow light time intervals were not
changed either before or after intersections were equipped with
red light cameras, we reviewed all the yellow light time interval
changes for these intersections. n
12 13
CHAPTER 1
Operational Weaknesses Make Red
Light Camera Programs Vulnerable
to Legal Challenges
CHAPTER SUMMARY
Although the seven local governments we visited generally
comply with state law governing the use of red light
cameras, they need to more rigorously oversee vendors to
retain control of their programs and enhance public trust in this
law enforcement tool. A superior court ruled that San Diego did
not provide suffi cient oversight of its vendor, resulting in more
than 250 citations being dismissed. Other local governments risk
the same rulings if they do not adequately oversee their programs.
We believe that proper oversight consists of making periodic
site visits to inspect the vendor’s operation for compliance with
the law and contract terms, establishing criteria
for screening violations, having controls in place
Local Governments In Our Sample to ensure that the vendor only mails properly
• Fremont authorized and approved citations, and making
decisions as to how long certain confidential
• Long Beach
data should be retained. Additionally, local
• Los Angeles County (Los Angeles)
governments should conduct periodic inspections
• Oxnard
of red light camera intersections to ensure that
• City of Sacramento (Sacramento)
the cameras are working properly and that
• City of San Diego (San Diego) vendors have not made unapproved changes to the
• City and county of San Francisco equipment. Because none of the local governments
(San Francisco)
we reviewed had taken all these steps at the outset of
our review, all are open to potential legal challenges.
Local governments also have differing interpretations of the
confi dentiality of the photographs taken by red light cameras.
Six of the seven local governments in our sample acknowledged
that they have used or would use the photographs for purposes
other than enforcing red light violations, such as investigating
unrelated crimes. According to our legal counsel, a literal reading
of the statute prohibits use of the photographs for purposes
other than to prosecute motorists for running red lights.
However, several jurisdictions believe that other laws, as well as
the California Constitution, would permit the use of red light
photographs as evidence in a criminal prosecution. According
12 13
to our legal counsel, in view of these conflicting interpretations
of the law, the courts will ultimately decide whether local
governments are violating the red light camera law when using
the photographs in criminal investigations.
Although it does not mandate such action, the Federal Highway
Administration (FHWA) recommends that local governments
install red light cameras at hazardous intersections to improve
traffic safety most effectively. Traffic safety appeared to be a
significant factor in the choice for most sites for red light
cameras; however, we found that Los Angeles, Sacramento,
Oxnard, and San Diego placed cameras at some intersections
that did not appear to have problems with red light violations
based on accident statistics. In addition, four local governments
acknowledged that they avoided placing cameras at state-owned
intersections with high accident rates. Fremont, Long Beach,
and San Diego anticipated that obtaining permission from
the State would delay their programs, while Los Angeles
did not consider state-owned intersections for its program.
The FHWA also suggests that, before placing cameras, local
governments determine whether an intersection has engineering
shortcomings that should be addressed to curb the high number
of motorists running red lights. San Francisco alone performed
an engineering review of intersections before installing red
light cameras, and the other local governments conducted
engineering reviews less formally.
LOCAL GOVERNMENTS HAVE BEEN CHALLENGED ON
THEIR CONTROL OF RED LIGHT CAMERA PROGRAMS
Several local governments have been taken to court by alleged
red light violators who claim that the local governments are not
operating their red light camera programs as required under the
law. Although the law stipulates that only a government agency,
in cooperation with a law enforcement agency, can operate a
program, it offers no further explanation or definition of what
operate means, leaving the term open to interpretation. Because
local governments contract out the bulk of services for these
programs, private sector vendors inevitably play an important role.
However, if municipalities delegate too much responsibility, they
run the risk of their program being perceived as vendor controlled.
In fact, a 2001 lawsuit brought against the city of San Diego
alleged that it was not operating its red light camera program
as intended by law. In ruling on the allegation, the court relied
14 15
on a precedent case unrelated to red light cameras, as well
as Webster’s Dictionary, for guidance in defining what operate
means. The court ruled that the city had no involvement with,
or supervision over, the ongoing operation of the program and
concluded that the city exhibited a lack of oversight. The court
also found that the vendor entirely conducted the installation,
calibration, and maintenance of the camera equipment and
that the city did not even inspect the construction once it was
completed. One of the key pieces of evidence illustrating the
One court ruled that the city’s lack of control was that the vendor had moved detection
city of San Diego had loops for the camera system at three intersections without the
no involvement with, city’s knowledge or approval. Because of these concerns, the
or supervision over, the court ruled that San Diego’s actions did not satisfy the plain
ongoing operation of its meaning of the word operate and therefore the city did not
program and therefore comply with the law. Also, because the vendor was essentially
it was not in compliance operating the program and being paid on a contingency basis,
with the law. the court found a potential conflict, which further undermined
the trustworthiness of evidence used to prosecute red light
violations. Because of the court’s ruling, approximately 250 citations
were ultimately dismissed.
San Diego has appealed the ruling, arguing that in spite of the
question of who operates the program, the photographs show
evidence of red light violations so the citations should not be
dismissed. The appeal had not been decided as of June 2002.
Because of concerns about the program, San Diego suspended its
red light camera operations in June 2001 and has not restarted
the program as of July 2002.
Beverly Hills was the subject of a lawsuit filed in 2000 alleging
concerns over program operations similar to those in the
San Diego case, but there the court ruled in favor of Beverly Hills.
In the ruling, the court concluded that the city operates the
program regardless of the tasks the vendor performs. After
stating that contracting out does not violate the mandate of
the law and that, as a practical matter, it is infeasible for
a local government to implement a red light camera program
on its own, the court identified specific pieces of evidence that
indicated the city does operate its program. The specific items
mentioned by the court included that the city determines the
location of detection loops, the timing and phasing of the traffic
signal lights, the delay period between the light turning red
and the taking of the photograph, and the minimum speed a
vehicle must be traveling to trip the system.
14 15
San Francisco is in the early stages of defending itself against
a similar lawsuit over the operation of its program. The
primary complaint is that San Francisco plays only a minor
part in the process of issuing citations, and that the vendor’s
assigned functions effectively place it in control of the
program. Additional complaints are that the red light camera
system constitutes a speed trap, infringes on accused drivers’
rights against self-incrimination, and violates the drivers’ and
passengers’ right to privacy. As of June 2002, the lawsuit is still
awaiting trial.
LOCAL GOVERNMENTS MUST MORE RIGOROUSLY
SUPERVISE VENDORS TO RETAIN PROGRAM CONTROL
Despite the legal requirement that a government agency operate
a red light camera program and the successful legal challenge
Because vendors providing against San Diego previously noted, the local governments
red light camera services we visited do not exercise enough oversight of their vendors.
receive a fee for each paid Vendors have different objectives for red light camera programs
citation, local government than local governments do. The local governments we visited
oversight is critical. employ red light cameras to improve traffic safety, but vendors
provide the services to make a profit. There is nothing wrong
with vendors making a profit from their activities; however,
because most local governments pay a fee for each red light
citation paid, vendors have an inherent interest in maximizing
the number of citations issued by red light cameras, and the
perception could exist that vendors manipulate the systems to
issue more citations. In addition, red light camera programs
involve reviewing confidential data about individuals—
motorists’ names, addresses, and photographs—another reason
why local government oversight is critical.
Oversight can consist of several elements to monitor and control
vendor activities. For example, the local government could
make periodic site visits to review the vendor’s operations to
determine compliance with state law and adherence to contract
terms and conditions. We also believe that oversight should
include requiring the vendor to follow specific instructions—
known as business rules—for screening violations, establishing
controls to ensure that the vendor mails only properly
authorized and approved citations, making key decisions such
as how long the vendor will retain records, and making periodic
inspections of red light camera intersections to ensure that they
are working properly and have not been modified by the vendor
without approval. Elements of this type of supervision existed
16 17
in each of the local governments we visited, but at the outset of
our review none of them exhibited all the oversight elements
we believe are needed to avoid legal challenge. Table 1 shows
the elements of the process, along with each local government’s
adherence to each element.
TABLE 1
Local Governments Employ Too Few Elements of Oversight
Elements Fremont Long Beach Los Angeles Oxnard Sacramento San Diego San Francisco
Conduct at least one oversight
visit to vendor’s facility
Furnish business rules to vendor
Use controls to monitor whether
vendors mail unauthorized or
unapproved citations
Include a specific contract
provision making the misuse
of photographs a breach
*
of contract
Include a general contract
provision that ensures
confidential records are
kept confidential
Limit the time vendors can keep
confidential records relating to
*
unenforced violations
Periodically conduct technical
inspections of red light camera
intersections
Note: A check mark indicates that the local government has sufficient oversight.
*During our fieldwork, Long Beach took steps to amend the contract with its vendor to address these oversight elements.
Three Local Governments Made Oversight Visits to Their Vendors
Among the seven local governments we reviewed, three had
made visits to the vendor’s facilities to oversee the vendor’s
activities. As noted previously, vendors perform several key
activities at their facilities, including screening all violations
photographed, storing confidential data, and mailing citations.
Periodic site visits allow the local government to observe how
the vendor conducts these activities, the security features that
protect access to the facilities, the handling and storage of
16 17
confidential data, and how closely the vendor follows contract
terms and conditions. In addition, a visit can provide a presence
to remind the vendor, and the public, that the local government
is in charge of the program. To be efficient and useful, the
local government should structure oversight visits to review
key concerns and share the results with the vendor so that any
problems can be promptly addressed.
The three local governments that actually conducted oversight
visits at their vendors’ facilities did so only once. In the
As of June 2002, four first instance, two officers from the Sacramento City Police
of the seven vendors Department made an unscheduled visit in April 2002 and
we reviewed had not concluded that the vendor’s employees and facilities appeared
conducted oversight visits to comply with all applicable laws. However, the officers
and the remaining three did observe that the negatives for all photographs taken in
did so only once. Sacramento during 1999 were stored in a cardboard box within
a secured room rather than being locked in a safe as the city’s
contract requires. The vendor explained that the safe was full
and that the negatives were temporarily being stored elsewhere.
In addition, the officers noted that film development was
outsourced to another company, and they were concerned
that photographs could be reprinted without authorization.
The vendor indicated that it was currently negotiating a
confidentiality agreement with the film development company
and that the contract would include economic sanctions for
any violations.
In the second instance, the manager of the Fremont red
light camera program and a captain from the Fremont Police
Department visited the vendor’s facility in April 2001 but did
not document the results of the visit. After our inquiry, the
program manager did document the visit, noting that the
facility was very well organized and that they had observed no
problems with the vendor’s compliance with the law or with
the city’s contract. Finally in June 2002, a sergeant from the
Long Beach Police Department visited its vendor’s Rhode Island
processing facility. The sergeant found that security procedures
were appropriate and noted no problems with the vendor’s
compliance with the law or the city’s contract. While the three
cities indicate they are planning to conduct future oversight
visits, they could not tell us when these visits would occur.
The other four local governments in our sample have conducted
no oversight visits to their vendor’s facilities. Officers from
the Oxnard Police Department believe that the annual training
sessions on the use of the red light camera system at the vendor’s
18 19
facility provide sufficient opportunity to review and tour the
vendor’s facility. To ensure that they understand the vendor’s
operations, Oxnard’s police officers indicated that they ask
numerous questions of vendor staff during these training
sessions. Additionally, San Francisco stated that all four of its
program managers initially visited the vendor’s facility when
they assumed their positions, but did not document these
visits or what they reviewed. Although training sessions and
initial visits provide a certain amount of knowledge about how
the vendor conducts its business, they are not as rigorous as a
visit designed to ensure that the vendor complies with the law
and the local government’s contract. Oxnard states it is now
considering periodic visits to its vendor.
Currently, Los Angeles, San Francisco, and San Diego have
regular communications with their vendors—monthly reports,
telephone calls, and periodic meetings—but these actions do
not replace the oversight provided by actually inspecting the
vendors’ facilities. However, San Diego plans to make periodic
inspections of the vendor’s facilities if the city restarts its
program. By failing to properly inspect the vendor’s facility,
these local governments are missing an opportunity to gain
assurance that the vendor is properly screening citations and
protecting confidential data, as well as following the terms and
conditions of their respective contracts.
Not All Local Governments Provide Business Rules to Their Vendors
Neither Los Angeles nor San Diego furnishes business rules—
guidance and instructions on conducting a red light camera
Business rules give program—to its vendor. The Los Angeles vendor contract
vendors guidance on how indicates that the California Highway Patrol (CHP)—with which
to conduct the red light the county contracts to review and approve red light citations
camera programs and through four CHP offices—and the county would jointly prepare
provide an additional level the business rules. However, neither did so, and in fact, the
of oversight and control. vendor subsequently provided its own business rules for one
of the CHP offices to follow when reviewing citations. Some of
these business rules appear to be in conflict with the county’s
policy. For example, Los Angeles indicated that it did not use
a grace period—a preset time before the system activates to
differentiate between vehicles attempting to stop and vehicles
that clearly are running the red light—yet the vendor’s business
rules instruct the CHP to allow one-tenth of a second. In this
instance, the vendor’s actions could be construed as having
more control over the program than it should have. Although
San Diego did not develop business rules for its vendor, it did
18 19
give verbal instructions for the vendor to follow when reviewing
violations. However, lacking formal business rules, neither of these
local governments appears to have the appropriate level of control
over the vendor’s participation in the red light camera program.
In contrast, the other five local governments we visited did provide
business rules to direct and guide their vendors’ activities. Although
the content of the business rules varies, their existence gives an
additional level of oversight and control over these red light
camera programs, and the local governments could measure the
vendors’ performance against these rules during oversight visits.
Most Local Governments Lack Adequate Control Over the
Mailing of Red Light Citations
Vendors not only have access to all violations captured by red
light cameras but also mail approved citations and receive a fee
for each citation paid. Therefore, local governments should have
controls in place to ensure that vendors send only citations that
have been reviewed and approved and are, therefore, enforceable.
However, five local governments we visited lack such controls,
and two others had controls that were not as effective as they
could be. Consequently, in at least one instance, a vendor mailed
motorists unauthorized or unapproved citations.
Specifically, San Francisco learned that its vendor had mailed at
least one citation that had been previously dismissed and several
Because of the absence unapproved citations. In March 2002, a citizen informed the
of a key control, police officer assigned to review citations that he had received
San Francisco’s vendor by mail a citation the officer had previously dismissed. The
mailed 1 unauthorized police department subsequently conducted a review of citations
citation and 21 others the vendor had mailed between January 2001 and March 2002.
that were either unsigned The review found that although this was the only unauthorized
or undated. citation the vendor had mailed, it had also mailed 21 other
citations that were authorized but a police officer had not signed
or dated them, both of which are necessary for approval, and
the vendor should therefore have returned them to the police
department. Because the local courts review other police-written
citations for proper signature, the city has asked them to reject
every red light citation without an officer’s signature and date.
Although court review of citations may be helpful, it is the
responsibility of each local government to ensure such controls
are effective. Local governments without appropriate controls
over the issuance of citations run the same risk.
20 21
Two local governments—Long Beach and Fremont—use
computer controls that they believe prevent their vendors
from mistakenly mailing unapproved citations to motorists.
These systems require the officer reviewing a citation to enter a
password to electronically approve it. The Long Beach system
only allows authorized police officers with unique passwords
to approve citations for processing. Similarly, only citations
approved by Fremont personnel are eligible for processing by
the vendor. But because the vendors furnished these computer
systems, the possibility exists that the vendors could manipulate
the computer systems to issue citations that Fremont or
Long Beach had decided not to enforce.
A periodic reconciliation of the number of citations the local
government authorized and approved with those the vendor
mailed during the same period would detect any unauthorized
or unapproved citations. This reconciliation would allow the
local government to promptly follow up with the vendor on
any differences.
Better Oversight of Vendor Handling of Confidential Data
Is Needed
Our review found at least two instances where vendors misused
photographs taken by red light cameras. In one instance, a
San Francisco assessed its photograph that showed a bicyclist being struck by a vehicle
vendor a $10,000 penalty in San Francisco was posted in the hallway of the San Diego
for breaching the provisions Police Department. When we questioned the San Francisco
of the contract by misusing program manager about this photograph, he was unaware that
confidential red light San Diego was displaying it. He then investigated and found
camera photographs. that the vendor had not only released the information to the
San Diego Police Department but also allowed a news reporter
to see the photograph. Subsequently, San Francisco notified the
vendor that it had breached the contract based on the provision
in the red light camera law requiring the confidentiality of all
photographs. San Francisco assessed the vendor a penalty of
$10,000 for the two violations and directed the vendor to cure
the breach by retrieving all photographs it or its subcontractor
had similarly misused. Additionally, San Francisco indicated that
it would terminate the contract if the vendor failed to deliver
these photographs to the program manager within 30 days
or if the vendor made public any photographs in the future.
San Francisco’s actions seem appropriate and were aided by
having a well-written contract.
20 21
In another instance, a vendor’s manual for an August 2000
training session contained both photographs and personal data
of motorists running red lights taken by a red light camera in
Los Angeles. Attending this session were staff from localities
outside the county. Although a county engineer indicates he was
not aware that the vendor had used these photographs in the
training manual, he believes that the law does not prohibit their
use for training because only staff from other local governments
attend the training session. Nevertheless, the unauthorized
use of motorists’ photographs, names, and addresses could be
construed as a violation of the legal requirement to keep this
information confidential. In addition, none of the pages in the
training manual were marked as confidential. We do not believe
it is necessary to include motorists’ photographs, names, and
addresses on citations used to illustrate training manuals and
distributed to attendees of the training. Unlike San Francisco’s
contract, the Los Angeles contract does not have a strongly
written provision to require the vendor to keep motorists’
photographs and personal data confidential.
Local Governments Allow Vendors to Keep Certain
Confidential Records Longer Than Needed
Although many citations containing photographs taken by red
light cameras are not enforced because the motorists cannot
be identified, local governments do not require vendors to
destroy these records after a reasonable period. Citations that
are not approved and mailed cannot be reissued or otherwise
used to prosecute red light violations. Under the law, local
governments must identify the violating motorist, authorize the
citation, and mail it within 15 days after the violation occurred
or dismiss it. As shown in Appendix A, only about 23 percent
of the total violations that occurred in 2001 were enforced by
the local governments we reviewed. However, for the roughly
77 percent of violations that were not enforced, the citations
contain motorists’ photographs and possibly their names and
addresses obtained from Department of Motor Vehicles (DMV)
Vendors are retaining a records. The DMV indicates that any data obtained from its
significant number of records should be destroyed once their legitimate use has ended.
photographs, along with According to the DMV, legitimate use of the records means
motorists’ names and that local governments can retain DMV data as long as their
addresses, long after the use remains consistent with the original purpose for which the
time the legitimate use of information was obtained. However, the DMV noted that if the
this information has ended. local government determines that it must retain red light camera
data for contractual or legal reasons, then the local government
must document why retention is necessary.
22 23
Our review indicated that vendors often retain the data for an
unspecified period, usually from 3 to 5 years, but do not indicate
why such a long retention period is necessary. Specifically,
vendors are retaining a significant number of photographs well
beyond the time their legitimate use has ended. For example,
San Francisco was unable to identify the motorist involved in the
previously mentioned photograph of a bicyclist being struck by
a vehicle, indicating the citation was not enforced. Had it been
instructed to promptly destroy all data relating to unenforced
violations, the vendor might not have misused this photograph.
It is therefore important to destroy this data as soon as it is no
longer needed. Additionally, the vendor for Long Beach retains
the data until its 3-year contract expires and then returns the
data to the city. However, as a result of our inquiries, Long Beach
has instructed its vendor to destroy all dismissed and unenforced
citations within 60 days and all enforced citations after 3 years.
Ongoing Inspection of Red Light Camera Intersections Is Needed
Although periodic inspection of red light camera systems
would provide assurance that they are operating properly, only
Sacramento and Long Beach apply this form of oversight. The
other five local governments rely on their vendors and on
informal observations of police and traffic department staff to
report any problems they observe during their routine duties.
Periodic inspections focusing on the engineering aspects of these
Periodic inspections could intersections could ensure that the red light camera systems are
provide assurance that properly calibrated and programmed for accuracy, along with
red light camera systems determining if any physical conditions of the intersections might
are properly calibrated cause motorists to run red lights unintentionally. The inspections
and programmed for could also detect if the vendor made any unauthorized changes.
accuracy, and detect if
the vendor had made any Sacramento recently began a quarterly inspection process
unauthorized changes. conducted by a private engineering firm. The engineering firm
inspects the red light camera systems to determine, among
other things, the accuracy of the vehicle detector loops that
trigger the red light cameras. This field inspection process
reviews other intersection conditions that might cause a
motorist to inadvertently enter the intersection on a red light,
including whether actual yellow light time intervals match the
city’s official settings, the visibility and placement of traffic
signals and the limit line, the posting of traffic speeds and
regulatory signs, the pavement condition, and traffic volume.
The engineering firm delivers its report, along with any
recommendations, to the city’s traffic engineering department,
which makes the necessary changes. The first report, completed
22 23
in October 2001, noted several minor problems and indicated
that although three yellow light time intervals met California
Department of Transportation (Caltrans) standards, they should
be lengthened to meet driver expectations. The second report
was completed in February 2002 and concluded that the city
had properly addressed the first report’s findings and noted
several new but minor problems. Both reports found that
the city’s red light camera system was functioning properly.
This type of ongoing inspection by an outside engineering
firm provides an additional level of oversight of the vendor’s
activities and could enhance the public’s trust in the red light
camera program. A local government’s traffic engineering
department staff could give the same level of oversight if they
followed a structured review and analyzed the same features of
red light camera intersections.
Long Beach believes that it has procedures in place to provide
assurance that the red light camera system it uses is operating
as intended. The officer in charge of the program inspects red
light camera intersections each week to ensure that the video
cameras, mounting poles, and warning signs are in place and
undamaged. Further, the video technology that Long Beach
uses allows the officer approving citations to see motorists that
approach intersections and that run the red light. If the camera
system was damaged or changed by the vendor, the officer
would detect the problem when reviewing potential citations.
LOCAL GOVERNMENTS GENERALLY SELECTED
APPROPRIATE INTERSECTIONS FOR RED LIGHT
CAMERA INSTALLATIONS BUT MAY NOT HAVE
ADDRESSED ENGINEERING IMPROVEMENTS FIRST
The reasons local governments gave us for using red light
cameras and selecting certain intersections for camera
installation were related to traffic safety concerns, which is
consistent with the Legislature’s intent. However, although we
could verify that a legitimate traffic safety concern existed at
most intersections selected, in some circumstances the accident
data alone failed to justify the selection. In addition, we could
not always verify that local governments addressed engineering
solutions before placing red light cameras, as recommended
by the FHWA. Moreover, four local governments we visited
avoided installing red light cameras at dangerous state-owned
24 25
intersections. Fremont, Long Beach, and San Diego anticipated
that the Caltrans permitting process would delay their
programs. Los Angeles indicated it did not consider state-owned
intersections in its selection process.
Traffic Safety Concerns Controlled Most Intersection Selections
The local governments we visited selected most red light camera
intersections because they had been identified as dangerous
Most red light camera either by CHP data or by local accident data. This motivation is
intersections were consistent with the Legislature’s intent in approving the use of
identified either by CHP red light cameras—that the programs enhance traffic safety. In
or local accident data as most cases, the local governments also cited additional factors,
being dangerous, which both quantitative and nonquantitative, as influential in the
is consistent with the decision. In some cases, even where the statistical accident data
Legislature’s intent to may not have been particularly compelling, police and traffic
enhance traffic safety. engineers provided additional information about the decision to
place a red light camera that indicated a reasonable relationship
to traffic safety. Table 2 on the following page shows the various
criteria local governments used—both data and judgment based—
when selecting intersections for red light camera installations.
Local governments generally selected intersections using these
criteria, often in combination, which is consistent with the
FHWA suggestion that camera systems be placed at intersections
that pose high risks for both crashes and violations resulting
from running red lights. The extent of available data differed
among the local governments we visited, as did the combination
of criteria used to select intersections and the extent to which
the local governments were influenced by particular factors.
However, we noted several instances where the final site selection
may have differed from the criteria that initially guided the process.
For example, in 1998, the Los Angeles County Department of
Public Works Traffic and Lighting Division (traffic division),
which manages the county’s red light camera program, ranked
the 25 most dangerous intersections based on the number of
accidents caused by vehicles running red lights in combination
with traffic volume and broadside accidents of all causes
occurring between fiscal years 1995–96 and 1997–98. In an effort
to widely distribute the camera systems across the county, the
24 25
TABLE 2
Local Governments Used Varying Criteria to Select Intersections for
Red Light Camera Enforcement
Selection Criterion Fremont Long Beach Los Angeles Oxnard Sacramento San Diego San Francisco
Based on data
Accidents from motorists running
red lights
Broadside accidents
Total accidents
Violations from motorists running
red lights
Traffic volume
Costs associated with accidents
Increased revenue
Based on the judgment
of local government staff
Safety of police during traffic
enforcement
Technical suitability of an
intersection for a red light
camera system
Negative perceptions of
Caltrans’ permitting process
Recent or planned intersection
improvements
Informal input from police,
community members, and city
or county representatives
Concerns over sufficient police
capacity for traffic enforcement
Geographic distribution
Expected “spillover effects” at
other intersections
Funding source
Source: Internal reports and data provided by local governments that they used when selecting intersections for red light camera
installations.
26 27
traffic division initially selected the most dangerous intersection
from each supervisory district for the county’s pilot program of
five cameras. However, one intersection was considered for a
different camera technology, but the traffic division decided not
to use that technology. As a result, the fifth camera, slated for
the most dangerous intersection in one district, was not installed
at that time.
A year later, the traffic division decided to install red light
cameras at a fifth intersection, citing several reasons for selecting
the site in its April 2000 staff status report. It reported that
it based this decision on the number of accidents caused by
vehicles running red lights, the number of broadside accidents,
and the potential for increased revenue. However, the traffic
division has been unable to provide us with any data to
support these reasons other than a potential annual increase in
revenue of $300,000. Further, data we obtained from the CHP
covering calendar years 1995 through 1999 show that only
6 accidents attributable to vehicles running red lights occurred
at this intersection compared with a range of 16 to 30 accidents
occurring at the county’s other red light camera intersections
during the same period. Thus, in terms of accidents, this
intersection does not appear to be as dangerous.
Although San Diego, Sacramento, and Oxnard used traffic
safety data—accidents, violations, or traffic volume—to select
San Diego, Sacramento, intersections for placing red light cameras, for several intersections
and Oxnard placed selected, we found that both their criteria and accident data from
cameras at some the CHP did not establish that a traffic safety problem existed.
intersections that did not For example, 5 of the 19 intersections that San Diego selected
appear to have traffic were not among the most dangerous based on the accident data
safety problems based we analyzed. Similarly, we found that 3 of the 11 intersections
strictly on accident data. in Sacramento and 1 of the 11 intersections in Oxnard did not
appear overly dangerous based on accident data. According to
a sergeant that helped set up the San Diego program, the police
department used police officer and community input along
with older accident data to select that city’s intersections, even
though the number of accidents were minimal in the period
immediately before the start of the red light camera program. A
one-day video survey conducted by Sacramento’s vendor showed
that all 3 intersections had a high number of red light violations.
Finally, Oxnard did not provide additional data to document
their selection process but indicated that the city approached site
selection with a desire to place camera systems in locations that
would provide coverage to the entire city, thereby discouraging
motorists from running red lights at all intersections.
26 27
Although Some Changes Were Ongoing, Local Governments
Did Not Always Address Recommended Engineering
Improvements Immediately Before Installing Red Light Cameras
Our review of the site selection processes used by the local
governments we visited found evidence of ongoing engineering
improvements at problem intersections, but we could not
always determine whether local governments
addressed these shortcomings before installing
Possible Engineering Measures to the cameras. The FHWA recommends that before
Reduce Red Light Violations
installing a red light camera system, traffic
engineers review the engineering aspects of the
• Use or increase an all-red interval to clear
the intersection. potential sites to determine whether the problem
of vehicles running red lights could be mitigated
• Increase the yellow light time interval to
allow for adequate stop time. by engineering changes or improvements.
• Improve signal visibility by installing mast In addition, Caltrans recommends a number
arms or additional signal lights. of engineering measures when upgrading an
• Improve the visibility of signal lights by using intersection.
larger lamps or replacing incandescent lamps
with light-emitting diodes.
To varying degrees, all the local governments we
• Use warning signs to alert motorists of an
visited showed evidence of conducting some
upcoming traffi c signal.
type of traffic safety analysis, usually on an
• Adjust the posted speed limit to refl ect
prevailing speeds. ongoing basis, and implementing some level
of engineering improvements at dangerous
• Install vehicle detector devices further from
the intersection to improve traffi c fl ow. intersections. For example, at all red light camera
• Repaint or add stripes or pavement markings. intersections, fi ve of the local governments we
visited employed an all-red clearance interval—a
period in which the signal lights are red in every
Sources: The Federal Highway Administration,
California Department of Transportation, and direction for up to two seconds to allow traffi c
Transportation Research Board.
to clear. Los Angeles and Sacramento used all-red
clearance intervals on some but not all their red
light camera intersections.
San Francisco best demonstrated that it made engineering
improvements before installing red light cameras. Early in its
pilot program in late 1996, San Francisco’s traffi c department,
which manages the red light program, considered different
options to mitigate red light violations. Convinced that some
engineering measures were promising and others could actually
exacerbate the problem, the traffi c department recommended
pursuing a camera program as another tool to address red light
violations. We were able to determine that San Francisco made
engineering improvements before installing red light cameras
at intersections. For example, San Francisco added an all-red
clearance interval, installed larger signal lights or mast arms,
redesigned the intersection, or suggested additional engineering
analysis of the problem. Documents provided by San Francisco
28 29
not only revealed the engineering efforts taken to address the
problem but also illustrated that engineering improvements
need not be applied with a one-size-fits-all approach but
can be done incrementally based on the characteristics of a
particular intersection.
San Diego’s process of implementing engineering solutions is
similar to San Francisco’s, except it is not explicitly linked with
red light camera deployment. San Diego’s annual accident review
process identifies intersections with high accident rates resulting
from all causes. Where a high accident rate is indicated, the
intersection becomes the focus of further analysis that ultimately
leads to proposals to address the problem. The recommended
engineering measures vary, depending on the specific
characteristics of the intersection, accident patterns and rates, and
what measures may have been previously implemented.
Similarly, the other local governments conducted their engineering
improvements on a more informal and ongoing basis and, as in
Except for San Francisco, San Diego, we could not always tell if intersections chosen for red
we could not tell if light cameras received engineering improvements before cameras
other local governments’ were installed. For example, according to city representatives,
intersections received Fremont and Oxnard conduct informal engineering analyses
engineering improvements of intersections that come to the attention of police or traffic
before the installation of engineers. The extent to which engineering improvements
red light cameras. were considered before placing red light cameras was described
by traffic engineers from both cities as an ongoing process not
linked to red light camera placement. With the exception of
Oxnard adding an all-red clearance interval to two intersections
with high accident rates, we could not determine the extent
to which those local governments had formally analyzed
the intersections with high accident rates to make specific
engineering changes before installing red light cameras.
Traffic engineers from some of the local governments indicated
to us that although the engineering improvements may reduce
accidents, they might not necessarily deter motorists from running
red lights, particularly motorists who do so deliberately. Some
traffic engineers we spoke with believe that motorists will simply
adjust their driving behavior to longer yellow light time intervals
or all-red clearance intervals, thereby possibly perpetuating the
problem. Some engineers also contend that engineering tools alone
have a limited effect on reducing accidents and red light violations,
particularly when motorists are deliberately running red lights,
and that enhanced enforcement combined with improvements to
intersections is probably a more effective approach.
28 29
To Avoid Installation Delays, Some Local Governments Bypassed
State-Owned Intersections With High Accident Rates
Local governments face the likelihood that some intersections
with high incidences of red light accidents and violations
are state owned. Caltrans allows red light cameras at state-
owned intersections but requires an encroachment permit for
construction. The time it takes to obtain an encroachment
permit—which grants the local government access to a state
right-of-way for construction—was viewed differently among the
local governments we visited.
Fremont and Long Beach avoided including state-owned
intersections in their red light camera programs because they
anticipated that the Caltrans permitting process would be
too cumbersome and would unnecessarily delay the start of
their programs. In addition, San Diego stated that Caltrans
was unwilling to allow red light cameras on state-owned
intersections, but the city could not provide evidence of
Caltrans’ refusal. Also, Los Angeles did not consider state-
owned intersections for its program. By avoiding state-owned
intersections, these local governments failed to place cameras
at some of the most dangerous intersections within their
jurisdictions. Long Beach, for example, excluded several high-
accident intersections from its initial site selection process. In
its 1998 accident analysis, which the city used as the basis for
its site selection process, three of the top ten high-accident
intersections are state owned, yet the city chose not to place any
of its camera systems at those locations. Despite avoiding state-
owned intersections, however, Long Beach ultimately chose
three other intersections from among the top ten intersections
in terms of collisions for its red light camera program. Because
the program was a pilot in Long Beach, the city chose to only
consider city intersections in its selection process.
The Fremont Police Department’s 1999 report that recommended
the intersections to receive red light cameras identified three of
the top five intersections in terms of collisions as state-owned.
However, the city’s traffic-engineering department recommended
against selecting these sites because of the additional permits and
other steps involved. Fremont thus excluded these intersections
from consideration for site selection despite their high accident
numbers. The Fremont Police Department indicated that it plans
to include the state-owned intersections when and if its program
expands beyond its current size.
30 31
Other local governments we visited did not necessarily view the
Caltrans permitting process as a hurdle. For example, it took
Sacramento nine months to obtain a Caltrans encroachment
permit for installing the camera at one intersection, but
Sacramento felt that this time delay was acceptable. Currently,
three of the city’s red light cameras are installed at state-owned
intersections, and four additional installations at state-owned
intersections are in the design or construction phase. At the
outset of its program in 1997, Oxnard identified several state-
owned intersections with high accident rates and obtained a
Caltrans encroachment permit to install camera systems at four
of these locations. Although San Francisco does not currently
have red light cameras at any state-owned intersections, its
traffic engineers indicate that it has a good working relationship
with Caltrans. In fact, Caltrans is embarking on its own red
light camera effort targeting five intersections near the Golden
Gate Bridge that will eventually be turned over to San Francisco.
Caltrans will finance the construction, and San Francisco will
assume the operation and maintenance responsibility.
According to a Caltrans official, the encroachment permit
process and related inspections can take five months or longer,
but generally the turnaround time is about 60 days. However,
the official acknowledged that each Caltrans district office may
experience a learning curve due to the additional technology
involved in the red light camera systems. Caltrans is working
with the district offices to expedite the process.
Local Governments Generally Required Vendors to Follow
Municipal Permit and Engineering Standards When Installing
Red Light Cameras
Six of the seven local governments we visited required vendors
to follow local permit and engineering standards to ensure
Local governments use proper construction and inspection of red light camera
local standards to ensure systems; San Diego used a different and less rigorous approach.
that changes to traffic Local standards may include issuing the proper permits to
infrastructure achieve an perform the work, reviewing engineering drawings and plans
expected level of quality and for the suitability of the work proposed, and inspecting the
do not conflict with existing finished work for accuracy and adherence to the plans and
traffic control systems. local construction requirements. Local governments use
these standards to ensure that any changes to their traffic
infrastructure achieve an expected level of quality and do not
conflict with existing traffic control systems.
30 31
Of the governments we visited, San Diego was the only one
that chose not to apply its local permitting and engineering
standards to red light camera intersections. The San Diego
Police Department hired a consulting firm specializing in
transportation planning and traffic engineering to conduct
an audit of the city’s program three months after the program
was suspended. The consulting firm found that the plans for
adding red light cameras to intersections were not prepared by
a registered civil or electrical engineer and that the construction
was not subject to the city’s formal plan check, permitting, and
inspection procedures. According to a senior traffic engineer,
the city believed that the nature of the red light camera system
construction work did not necessitate the more formal review
process the city normally used for development projects.
Consequently, the city gave only verbal approval of the plans
to the vendor. In addition, the vendor obtained only traffic
control permits rather than the city’s standard construction
permits. Once construction was complete, the city did not
conduct detailed inspections of the intersections for adherence
to the engineering plans, nor did it prepare as-built plans to
illustrate the actual construction work. According to the senior
traffic engineer, city inspectors viewed the red light camera
infrastructure as too technical and essentially relied on the
vendor to properly perform the construction. The consulting
firm found that at all red light camera intersections, the
placement of the camera systems did not correspond with the
intersection improvement plans, especially the vehicle detection
loops, which are used to measure a vehicle’s speed and time into
the red light. However, the consulting firm concluded that the
possible errors resulting from the misplacement of the detection
loops would not be significant enough to cause the system to
issue citations in error.
We found the most rigorous permitting and engineering
standards and processes in San Francisco. Registered engineers
San Francisco exhibited developed and reviewed construction plans, two different
the most rigorous city departments reviewed and signed the plans, the city
permitting and engineering conducted an inspection during the site construction process,
standards in installing its and the vendor prepared as-built drawings reflecting the actual
red light cameras. construction of the intersections. San Francisco maintains
files for each of its red light camera intersections to allow for
ready access to the engineering records. Although the level of
documentation varied, the remaining cities we visited generally
followed similar practices to ensure that the vendors properly
constructed the red light camera systems.
32 33
MOST LOCAL GOVERNMENTS BELIEVE PHOTOGRAPHS
CAN BE USED FOR OTHER LAW ENFORCEMENT PURPOSES
Most of the local governments we visited believe they can use
photographs captured by red light cameras for purposes other
than to prosecute red light violations, though only four have
done so. According to state law, such photographs are to be used
only for enforcing compliance with traffic signals. Our legal
counsel has advised that a literal read of the statute would limit
the use of photographs for those purposes. Nonetheless, several
local law enforcement jurisdictions have asserted that other
legal principles permit the use of the photographs in other
criminal investigations.
Of the seven local governments we visited, only San Francisco
specifically disallows the use of photographs for purposes other
than to prosecute red light violations. According to a deputy
city attorney, San Francisco believes that the law prohibits the
use of the photographs for any purpose beyond prosecuting
motorists for running red lights. She indicated that the city
has refused requests for the release of photographs. Of the six
remaining local governments, four have used the photographs
for other law enforcement purposes, and two others believe it
would be appropriate to do so. For example, the Sacramento
Police Department acknowledged that when a red light camera
violation occurs in concert with a more serious crime—such as
a carjacking with a homicide, a hit-and-run accident, armed
robbery, or suspects fleeing a burglary—it used the photographs
to investigate those crimes. According to the lieutenant in
charge of the program, law enforcement officers believe they
have an obligation under the law to provide the best evidence
when other crimes are incidental to red light camera violations,
and they would be derelict in their duties to withhold evidence
that might either identify or exclude the identity of a suspect
involved in another crime. The San Diego Police Department
also used a photograph of a motorist caught running a red
light to determine whether the same motorist was involved in
a hit-and-run accident at an intersection not equipped with
a red light camera. The police failed to identify the motorist
to determine if he caused the accident, but they used the
photograph to verify the extent of vehicle damage. Finally,
Los Angeles used a photograph as evidence to convict a motorist
of a hit-and-run felony, and Oxnard used a photograph to
identify a suspect in a stolen car case.
32 33
Although the remaining local governments, Fremont and
Long Beach, have not used their photographs for reasons other
than to issue traffic violations, they do not see a problem in
releasing them for other law enforcement purposes. A police
captain in Fremont whom we spoke to believes that the
photographs are available for other law enforcement uses.
Additionally, the Long Beach city prosecutor’s office believes
that another section of the law supercedes the confidentiality
provision in the red light camera law and that red light video
clips can be used for other law enforcement purposes.
As noted previously, the six local governments that have
or would use the photographs for other purposes indicated
that they would only do so in criminal investigations. For
example, in response to our inquiry, Oxnard obtained a legal
opinion from the Ventura County district attorney (district
attorney). The district attorney concluded that the Vehicle
Code limits the use of the photographs for purposes other than
enforcement of traffic signal laws. It based this conclusion
The Ventura County on the legislative history of the law, which showed that the
district attorney Legislature added the confidentiality requirement for the
concluded that the photographs to protect the privacy of motorists. Nonetheless,
Vehicle Code limits the the district attorney advised that the California Constitution—
use of the photographs to which provides that relevant evidence shall not be excluded
traffic signal enforcement, in any criminal proceeding—would permit the admission
but believes that the of the photographs as evidence in criminal proceedings.
California Constitution Other jurisdictions also believe that the courts would permit
would permit their prosecutors to use traffic enforcement photographs that provide
admission as evidence in material evidence that an accused person has committed a
criminal proceedings. crime. Our legal counsel advised that, if district attorneys believe
that these photographs are admissible in criminal proceedings
as evidence, criminal defense lawyers might similarly assert that
photographs, which provide evidence that an accused person did
not commit a crime, are also relevant and admissible evidence.
According to our legal counsel, the use of red light camera
photographs in criminal investigations and proceedings conflicts
with a literal reading of the law, which expressly makes the
photographs confidential, expressly limits their use to red light
traffic violations, and expressly states that the photographs may
not be used for any other purpose. In view of that language, it
is clear that the Legislature intended local governments would
not use the photographs for other purposes. In addition, the
34 35
use of those photographs in criminal investigations might raise
According to our legal additional legal issues, such as whether that use infringes on
counsel, the final decision individual privacy rights. Nonetheless, our legal counsel advised
over whether the red light that in view of the strongly held belief by some jurisdictions that
camera photographs are competing provisions in the law and the California Constitution
admissible as evidence in permit the use of the photographs in criminal proceedings, the
criminal cases will likely final decision regarding whether the photographs are admissible
be decided in court. as evidence will likely be decided in a legal challenge. The local
governments we interviewed, however, had not yet reached a
point where the issue could be brought before a judge.
The provision of the California Constitution cited by the district
attorney as permitting the introduction of all relevant evidence
in a criminal proceeding also provides that, with a two-thirds
vote of its members, the Legislature can specifically exclude
certain evidence from criminal proceedings, and according to
our legal counsel, this would likely include photographs related
to traffic signal enforcement. If the Legislature is concerned
that the district attorney’s view of the California Constitution
is inconsistent with the Legislature’s intended use of the
photographs, it should consider obtaining further legal advice
on the likelihood of that view prevailing in court. Moreover, the
Legislature may wish to consider amending the law by a two-
thirds vote to expressly state that the photographs cannot be
used as evidence in criminal proceedings.
LOCAL GOVERNMENTS GENERALLY COMPLIED WITH
OTHER LEGAL REQUIREMENTS
The local governments we visited comply with the other legal
requirements related to red light camera programs. The law
requires that local governments follow certain steps when
implementing their programs. Although we found some
differences in how the requirements were met, all seven
programs we observed comply with the California Vehicle Code,
as shown in Table 3 on the following page.
Several cities decided to place the red light camera warning signs
at major entrance points rather than at intersections. They did
so in the belief that this approach would enhance the deterrent
effect of red light cameras across the entire jurisdiction rather
34 35
TABLE 3
Red Light Camera Programs Comply With All Legal Requirements
Legal Requirement Fremont Long Beach Los Angeles Oxnard Sacramento San Diego San Francisco
Place warning signs at one of
these sites:
• Intersections
• Major city or county entrances
Issue public notice before start
of program
Issue warning citations for the
first 30 days of the program
Sworn officers or qualified
personnel approve all citations
City council or county board of
supervisors conduct a public
hearing before entering a contract
Note: A check mark indicates the local government complied with the legal requirement.
than just at specific intersections. Although California law gives
local governments the option of placing warning signs only at
major entrances, the language of the law defines major entrances
as, at a minimum, freeways, bridges, and state highway routes,
leaving some discretion to the local government.
The decision to place warning signs at major entrances, therefore,
carries with it a potential risk that a local government may
not adequately identify all its major entrances and might not
inspect the locations on a routine basis to ensure that the signs
remain in place as required by law. In fact, an appeal of a red
light citation regarding Sacramento’s placement of warning
signs at major entrances resulted in a December 1999 ruling by
a traffic court commissioner that the city had failed to install
warning signs in full compliance with the law. The city decided
to dismiss approximately 700 citations as a result of the ruling.
In response, Sacramento added warning signs at each of its red
light camera intersections. Fremont places warning signs at city
entrances but indicates that its risk of a similar legal challenge is
minimal because it has only 38 entrances and it placed signs at
each one.
36 37
San Francisco also chose to place warning signs at its entrance
points but only recently inspected the locations to ensure that
By placing warning the signs were still in place. This inspection, which took place
signs only at major in July 2001, determined that signs at 5 of 49 locations were
entrances to their cities, missing, prompting an immediate effort to replace them. The
San Francisco, Fremont, other local governments that placed warning signs at entrance
and Oxnard run the risk points—Fremont and Oxnard—indicated that they do not have
that their citations could a policy to inspect them on a regular basis but do inspect them
be challenged because as they would any other traffic signs within their jurisdiction.
they failed to identify all However, these practices range from an occasional police officer
major entrances. driving by a sign location to routine checks performed by city
personnel who may notice signs are missing. Such inspections
create the potential that signs are missing for extended periods
and leave the local governments open for legal challenges over
inadequate warning.
Although all the local governments we visited complied with the
public notice requirements of the California Vehicle Code, we
noted that only San Francisco’s red light camera program is fully
integrated into a jurisdiction-wide traffic safety improvement
program. The San Francisco Department of Parking and Traffic’s
Livable Streets program consists of traffic calming, pedestrian
safety, school area safety, and red light camera enforcement.
The program is designed to increase motorists’ awareness and
change their behavior through a combination of engineering,
education, and enforcement. The Livable Streets program itself
is tied to the San Francisco Department of Public Health’s Stop
Red Light Running program, which began in 1995. Public notice
regarding the use of red light cameras is an ongoing process in
San Francisco and focuses on a multitude of traffic safety issues
and programs.
NO STANDARD EXISTS FOR CONTRACTS BETWEEN
VENDORS AND LOCAL GOVERNMENTS
Despite contracting for relatively the same services, the local
governments we visited have varying provisions in their contracts
with red light camera vendors. Table 4 on the following page
shows the variations in certain key provisions. Most notably, only
two local governments have strong provisions in their contracts
with vendors to protect the confidentiality of motorists’ personal
data. According to their agreements with the DMV, for vendors
to access motorists’ personal data, they must be authorized by
the local governments to apply for access through the DMV. The
DMV requires the vendor to take steps necessary to ensure the
36 37
confidentiality of the DMV information they receive. However,
it is the local governments’ responsibility to ensure that vendors
maintain the confidentiality of the information they have access
to. Long Beach has confidentiality provisions to protect an alleged
violator’s personal DMV information, and San Francisco has a
provision securing the confidentiality of the photographs its
vendor collects. As previously discussed, San Francisco was able
to impose penalties against its vendor for breaching the contract
regarding this provision. The other five local governments have
either a general provision or none to ensure confidentiality of DMV
information or photographs taken by their respective vendors.
TABLE 4
Contracts Between Local Governments and Vendors
Seldom Contain All Critical Provisions
Provision Fremont Long Beach Los Angeles Oxnard Sacramento San Diego San Francisco
Requires that the vendor protect
*
the confidentiality of photographs
Requires that the vendor protect
the confidentiality of DMV
information
Stipulates how long the vendor
should retain information
*
related to unenforced citations
Requires that the vendor seek
permission before making any
modifications to the red light
camera intersections
Note: A check mark indicates that the provision exists in the contract.
*During our fieldwork, Long Beach took steps to amend the contract with its vendor to include these provisions.
Moreover, local governments pay their vendors different
amounts despite contracting for similar services. Generally,
the vendor’s scope of services includes installing the camera
system, providing red light camera system training to local
government staff, maintaining and servicing the system, and
performing the initial review and processing of citations.
However, although different local governments might receive
the same vendor services, the differences in the sizes of their
programs and their abilities to negotiate contracts could explain
the differences in compensation amounts that we observed. Of
38 39
the jurisdictions we visited, San Francisco and Los Angeles pay a
fl at fee along with a fee based on each citation paid. To remove
any perception that vendors might be tempted to increase the
volume of citations to increase their compensation, Sacramento
hopes to negotiate a fl at fee with its vendor. When we inquired
about how the local governments had negotiated the amount
their respective vendor receives as compensation, most indicated
that their main concern was simply to negotiate the best deal
possible for the program.
ALTHOUGH CALTRANS GUIDANCE RELATED TO
YELLOW LIGHT TIME INTERVALS COULD BE MORE
SPECIFIC, WE FOUND NO EVIDENCE OF LOCAL
GOVERNMENTS SHORTENING THE INTERVAL TO
INCREASE VIOLATIONS
With few exceptions, the local governments we visited complied
with a new law requiring that the minimum yellow light
time interval at intersections with red light cameras meet the
standards established by Caltrans. The change was effective
January 1, 2002, and was prompted by the Legislature’s concern
that yellow light time intervals at such intersections may be
shorter than Caltrans’ standards, thereby creating the need for a
uniform minimum standard at red light camera intersections.
Caltrans Guidance to Local Governments Related to
Yellow Light Time Intervals Could Be More Specifi c
Caltrans Standards for
Yellow Light Time Intervals Caltrans standards use the speed of the
approaching traffi c to determine the appropriate
Approach Yellow light time interval for a yellow light. The faster a
speed (miles time interval
vehicle travels, the longer the distance it takes
per hour) (seconds)
to stop, making it necessary to increase yellow
25 or less 3.0
light time intervals for higher speeds. However,
30 3.2 the Caltrans traffi c manual does not specify how
35 3.6 traffic engineers are to determine the speed of
the approaching traffi c. Two primary methods can
40 3.9
be used to establish traffi c speed: using the posted
45 4.3
speed limit or surveying the traffi c speed.
50 4.7
55 5.0 The chief of the Caltrans Offi ce of Electrical Systems
acknowledges that the traffi c manual does not
specify the method to use for determining yellow
Source: Caltrans traffi c manual.
light time intervals. The chief indicated that it is
very common to determine the yellow light time
38 39
interval using the posted speed limit, but cautions that traffic
engineers should exercise judgment to accommodate the
traffic and intersection needs. The chief further stated that
traffic engineers can request a survey of traffic speed if they are
While there are two concerned that a considerable difference exists between the
methods for establishing posted speed limit and the prevailing speed of traffic, or if an
the traffic speed to use in intersection has a history of accidents or characteristics in the
determining yellow light roadway that cause changes in traffic speed before or after the
time intervals, a Caltrans intersection. From the survey, traffic engineers determine the
official acknowledged maximum speed that 85 percent of the motorists are traveling—
that its traffic manual commonly referred to as the 85th percentile—and compare it to
does not specify when the posted speed. Often a speed survey shows that most traffic
either must be used. is driving faster than the posted speed. In these circumstances,
the chief stated, traffic engineers should use the higher speed
for determining the minimum yellow light time interval.
If necessary, traffic engineers should then use engineering
judgment to determine whether to increase minimum time
intervals to account for other factors—such as the slope of the
road—that might affect a motorist’s ability to stop safely at an
intersection. Although the chief’s explanations are not published
in the Caltrans traffic manual, she has provided this guidance to
at least one local government that asked for clarification of how
to comply with the new yellow light time interval law.
Most Local Governments Comply With the New Yellow Light
Time Interval Law
We determined whether local governments in our sample
complied with the law using either posted speeds or speed
survey results. Specifically, we evaluated whether each approach
equipped with a red light camera complied with Caltrans’
standards. As shown in Table 5, the yellow light time intervals
for most approaches at intersections equipped with red light
cameras meet or exceed Caltrans’ standards using posted speeds.
However, when using the actual traffic speed, some of the yellow
light time intervals were too short.
As the table shows, using either the posted speed or speed survey
method, Los Angeles and Fremont did not comply with the new
law as of January 1, 2002. The city of Los Angeles, which has
the responsibility for maintaining the intersection of Wilshire
and Sepulveda on behalf of Los Angeles County, reported
that as of June 2002, the yellow light time intervals for the
40 41
TABLE 5
Most Approaches Equipped With Red Light Cameras Met
Caltrans Minimum Standards for Yellow Light Time Intervals
Approaches Complying With the
Standard/Total Approaches
Using the 85th
Using the Percentile per the
Local Government Posted Speed Speed Survey
Fremont 6/7 4/7
Long Beach 12/12 4/12
Los Angeles 12/14 12/14
Oxnard 11/11 5/11
Sacramento* 15/15 12/15
San Diego 19/19 18/19
San Francisco 31/31 3/3†
Source: Signal timing sheets provided by the traffic engineers of the local governments
we visited, as of January 2002.
*We did not test the time interval for one approach because the red light camera was
only operational for one month during our fieldwork due to road construction.
† Most of San Francisco’s intersections had posted speeds of 25 miles per hour and its
policy is to not obtain speed surveys for these intersections.
two approaches at this intersection that did not meet Caltrans’
standards have been extended to comply with the law based on
speed survey results. Similarly, in March 2002, Fremont lowered
the posted speed at the intersection of Fremont and Paseo Padre
to conform to a speed survey. According to the speed survey,
most of the traffic was traveling more slowly than the original
posted speed; thus, lowering the posted speed was justified.
By lowering the posted speed, the interval time met Caltrans’
standards. However, Los Angeles and Fremont both risk legal
challenges to the red light citations issued at these intersections
during the period when yellow light time intervals did not
conform to Caltrans’ standards. In addition, because the Caltrans
traffic manual does not specify which of the two methods to
follow, local governments that do not meet Caltrans standards
using both posted speeds and speed survey results run the risk
that their yellow light time intervals may be legally challenged.
40 41
No Evidence Exists That Local Governments Have Manipulated
Yellow Light Time Intervals to Increase Red Light Violations
We reviewed the history of yellow light time interval changes for
the period immediately before red light cameras were installed
in the respective jurisdictions through April 2002 and found
We found that in that in most instances, local governments kept yellow light
most instances, local time intervals the same or increased them. Some critics of red
governments kept yellow light cameras believe that local governments reduce yellow
light intervals the same light time intervals at intersections after installing red light
or increased them before cameras to cause motorists to unintentionally run red lights
and after installing red and create a situation similar to a speed trap. Consequently,
light cameras. local governments—and the vendors—benefit financially by
issuing more citations, the critics claim. However, our analysis
found no evidence of any manipulation of yellow light time
intervals by the local governments we visited. Six of the local
governments were able to provide us with signal change
documents evidencing changes in yellow light time intervals.
Oxnard retained only a copy of the most recent signal change
documents and did not retain evidence of past time interval
changes. However, a traffic engineer from Oxnard stated
that yellow light time intervals have not decreased since the
installation of red light cameras.
According to a senior traffic engineer, San Diego shortened the
yellow light time intervals for two intersections several months
before installing red light cameras for reasons unrelated to the
program. For the intersection of Mission Bay Drive and Grand
Avenue—which is an unusual gradual left turn rather than the
more common 90-degree left turn—the city traffic engineers
set the yellow light time interval for the turn at 4 seconds in
April 1998, recognizing that a longer interval was necessary to
accommodate the higher speed driven through this gradual
left turn. However, in September 1999, after completing
construction unrelated to the red light camera program,
the engineers mistakenly shortened the time interval to the
standard 3 seconds the city uses for its 90-degree left turns. Red
light camera enforcement at this particular intersection began
in May 2000, and according to the traffic engineer, almost
immediately the yellow light time interval became the subject
of controversy. In response to the public’s concerns, the city
lengthened the time interval in July 2000 to the current time
of 4.7 seconds, and the number of red light violations dropped
by nearly 88 percent. In its ruling on a lawsuit against the
city, the court reviewed the evidence supporting this timing
change and recognized that the shortening of the time interval
42 43
was apparently attributable to a mistake the city made before
automated enforcement began at this intersection and it was
subsequently corrected. We found no evidence to the contrary.
San Diego also shortened the yellow light time interval at the
intersection of Mira Mesa and Scranton. In March 1999, as
part of a citywide timing adjustment to a national engineering
group’s standard for setting yellow light time intervals,
the city lowered the time interval at this intersection from
5 seconds to 3.9 seconds. The new time interval was based on a
February 1995 speed survey, which showed the 85th percentile
speed was 40 miles per hour. However, in adjusting the yellow
interval time, city traffi c engineers did not observe that the
posted speed was 45 miles per hour, which would suggest a time
interval of 4.3 seconds. In retrospect, a senior traffi c engineer
believes that the city should have either based the new interval
on the posted speed or not lowered the yellow light time
interval. Red light camera enforcement began in April 2000. In
November 2000, after receiving complaints from motorists, the
interval was increased to correspond to the posted speed.
Long Beach shortened the yellow light time intervals from
4 seconds to 3.9 seconds for two approaches at one intersection
because the posted speed was 40 miles per hour and the city’s
traffi c engineering department believed the law change required
it to exactly match the Caltrans intervals. Long Beach shortened
the time intervals at the two approaches in November 2001,
the month the city began issuing red light camera
citations. After our inquiry about the changes, the
Percentage of Citations Occurring
city reset the interval times at the two approaches
Within One Second of the Red Light
to their original time of 4 seconds because it
wanted to remove any concern of impropriety
Fremont* 88%
about the red light camera program.
Long Beach 84
Los Angeles 86
Oxnard 73 A SIGNIFICANT NUMBER OF RED LIGHT
VIOLATIONS OCCUR WITHIN ONE SECOND
Sacramento 82
OF THE LIGHT TURNING RED
San Diego 57
We were asked to obtain information to determine
San Francisco 72
the percentage of violations occurring within
Source: Vendor data since the inception of each one second of a light turning red. Because this
program. However, San Francisco is 2001 data only. is specifi c information the vendors collect, we
*Fremont data are for violations captured by obtained it directly from the three vendors that
red light cameras rather than citations issued.
contract with the seven local governments we
visited. The vendors’ information shows that
42 43
a significant percentage of the issued citations are for red
light violations that occur within one second of the light
turning red.
As shown in Figure 3, vehicles can travel significant distances
within a second of the light turning red. Depending on their
speed, all the vehicles depicted in the figure would be in or
through the intersection when the signal changed to green for
the other direction of traffic.
FIGURE 3
Vehicles Can Travel Significant Distances in One Second
������
�������
������
�������
������
�������
�������
���������
*Based on Caltrans minimum lane width of 12 feet.
44 45
It is important to keep in mind that the yellow light phase is
meant to warn motorists that the light will soon be turning
red and that standards exist to ensure that local governments
establish yellow light time intervals that provide an adequate
time for motorists to react. Although the law does not mandate
them to do so, five of the seven local governments we visited
employ grace periods of up to five-tenths of a second before
their red light cameras will begin taking photographs. A grace
period is a preset time interval after a light turns red that is used
to differentiate between vehicles attempting to stop or turn
right on a red light and vehicles that are clearly running the
light. The FHWA indicates that a grace period of three-tenths
of a second is commonly used and that five-tenths of a second
is the international standard. During the grace period, red light
cameras do not take photographs of vehicles that enter the
intersection. Thus, a motorist illegally entering the intersection
after the light has turned red will not receive a citation during
the grace period, although a police officer, if present, could still
choose to give chase and issue a citation, because the motorist
has broken the law.
RECOMMENDATIONS
Local governments should take the following actions to ensure
that they comply with state laws for the use of red light cameras,
maintain control over their programs, and minimize the risk of
legal challenges:
• Conduct more rigorous oversight of vendors by making periodic
visits to review their operations and develop business rules for
vendors to follow when screening violations.
• Specify periods for destroying confidential information relat-
ing to unenforced red light citations.
• Reconcile citations authorized and approved for enforcement
with citations the vendor mails, and promptly follow up on
any differences so that only authorized and approved citations
are mailed.
To ensure that local governments maintain control and operate
their red light camera programs, the Legislature should consider
clarifying the law to define the tasks that a local government
must perform to operate a red light camera program and the
tasks that can be delegated to a vendor.
44 45
Because a potential conflict exists between the confidentiality
provision in the Vehicle Code and the California Constitution
regarding the admissibility of evidence, the Legislature
should consider clarifying the Vehicle Code to state whether
photographs taken by red light cameras can be used for other
law enforcement purposes.
To respect the privacy of motorists whose photographs are taken
by red light cameras, local governments should strengthen the
language within their contracts with vendors to include explicit
wording to protect the confidentiality of photographs and
information obtained from the DMV database.
Before installing red light cameras, local governments should
first consider whether engineering measures, such as improving
signal light visibility or using warning signs to alert motorists of
an upcoming traffic signal, would improve traffic safety and be
more effective in addressing red light violations.
To focus on traffic safety and avoid overlooking high-accident
locations that are state owned when considering where to place
red light cameras, local governments should diligently pursue
the required Caltrans permitting process, even though it may
cause some delays to their programs.
To ensure that intersections are constructed and cameras are
installed as planned, local governments should follow their
own permit processes by reviewing the as-built plans and
inspecting the intersection after construction. Also, to help
maintain the integrity and accuracy of their systems, local
governments should conduct periodic inspections of red light
camera intersections and consider contracting with independent
engineering firms to conduct technical reviews of the camera
settings and system calibrations.
To avoid the risk of legal challenges, local governments should
petition Caltrans to clarify its traffic manual to explain when
local governments should use either posted speeds or the results
from speed surveys to establish yellow light time intervals at
intersections equipped with red light cameras. n
46 47
CHAPTER 2
Red Light Cameras Improve Traffic
Safety While Generating Little
Additional Revenues for Most
Local Governments
CHAPTER SUMMARY
Despite operational concerns about red light camera
programs, our review of available data on accidents
caused by vehicles running red lights shows that after
the introduction of cameras, the number of accidents related to
this type of violation usually declined. Based on our analysis of
accident data from January 1995 through September 2001, the
average number of accidents per month caused by motorists
running red lights declined by 10 percent statewide for all local
governments combined that use red light cameras compared
to no change in the number of accidents in those communities
without red light camera programs.
Throughout their jurisdictions, the number of red light accidents
decreased between 3 percent and 21 percent after implementation
of red light cameras for five of the local governments we visited
but increased by 5 percent in a sixth; accident data for the
seventh local government was not available for the period that it
used red light cameras. Additionally, based on the four months
of data that we were able to obtain, after San Diego suspended the
use of red light cameras in June 2001, accidents caused by red light
violations increased citywide by 14 percent and by 30 percent at
the intersections where red light cameras had been operating.
Finally, we found that the red light camera programs are not
revenue enhancing for most of the local governments we visited
and that most programs operate on a break-even basis or at
a slight deficit. Only San Diego and Oxnard have generated
significant revenues in excess of expenditures. For those two
programs, Oxnard has dedicated its net revenue to support the
costs of school crossing guards, and San Diego’s revenue remains
in the city’s general fund.
46 47
AFTER INTRODUCING RED LIGHT CAMERAS, FIVE
LOCAL GOVERNMENTS SAW THE NUMBER OF RELATED
ACCIDENTS FALL
Although other factors can influence monthly accident rates,
red light camera technology seems to be effective in reducing
accidents. As one measure of the effectiveness of these programs,
we considered the effect red light cameras had on reducing
accidents caused by motorists running red lights. We took a
three-level approach in our analysis, considering statewide red
light accident rates, red light accident rates in cities or counties
that use cameras, and red light accident rates at intersections
equipped with cameras. Our analysis, which produced similar
results to other accident studies, focused on the change in the
average number of accidents per month. It showed that the number
of accidents related to motorists running red lights decreased after
local governments implemented red light camera programs.
FIGURE 4
Red Light Cameras Reduced the Number
of Accidents Statewide and Locally
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Source: Bureau of State Audits analysis of data from the Statewide Integrated Traffic
Records System maintained by the California Highway Patrol.
48 49
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The Number of Accidents Dropped for Local Governments
That Introduced Red Light Cameras
Our analysis indicates that for local governments that use red
light cameras, the technology seems to be effective in reducing
accidents caused by motorists who run red lights. For example,
red light accident rates decreased statewide after January 1, 1996,
the effective date of the red light camera law. As indicated in
Figure 4, after the law was passed, related accidents decreased
3 percent statewide, attributable at least in part to those local
governments that currently use red light cameras.
We also analyzed the specific red light accident rates of the local
governments in our sample and found that accidents throughout
those jurisdictions had generally decreased. As shown in Figure 5,
five of the local governments experienced a decline in their monthly
average number of red light accidents, ranging from 3 percent
to more than 21 percent. Reductions appeared greatest for local
governments that have had red light cameras in place the longest.
FIGURE 5
Local Governments Experienced Significant Reductions in Accidents
After Implementing Red Light Camera Programs
Source: Bureau of State Audits analysis of data from the Statewide Integrated Traffic Records System, maintained by the California
Highway Patrol. The analysis covers the period from January 1995 through September 2001, except for San Diego, which
suspended its program on June 1, 2001.
48 49
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We noted factors other than the length of time San Francisco
has operated its red light camera program that probably
contributed to the decline in the number of its red light
accidents. Part of San Francisco’s approach to this problem is
to also have its police aggressively issue citations to motorists
who run red lights. In 1997, the first full year for automated
traffic enforcement, we observed that the San Francisco Police
Department also issued a large number of officer-generated red
light citations in addition to the citations issued by the camera
program. San Francisco has also employed an ongoing awareness
program to educate the public about the dangers of running
red lights.
Fremont, which began its red light camera program in late
August 2000, actually experienced almost a 5 percent increase
in the average number of red light accidents per month.
Fremont explained that a disproportionate increase in the
volume of traffic occurred in the same year the red light cameras
became operational, but did not provide us with an analysis of
traffic volume data to substantiate the claim that this caused
the higher accident rate. Long Beach began its program in
October 2001, one month after the September 2001 cutoff of the
accident data we obtained for our analysis.
In Most Instances, Accidents Decreased Substantially at
Intersections With Red Light Cameras
For local governments we visited, we analyzed the combined
average number of red light accidents that occurred before and
after the start of the program at all intersections with red light
cameras. Many of the decreases were much more dramatic than
the community-wide or statewide decreases already discussed.
As shown in Figure 6, reductions in red light accidents at the
relevant intersections ranged from almost 11 percent in Fremont
to more than 55 percent in Oxnard.
We also looked at San Diego’s rate of accidents caused by
motorists running red lights after it suspended its program in
June 2001 (not shown in Figure 6). Based on the four months
of available data, red light accidents increased by 14 percent
citywide and by 30 percent for intersections where the city had
been using red light cameras.
50 51
FIGURE 6
Red Light Accident Rates Fell More Dramatically at Intersections With Cameras
Source: Bureau of State Audits analysis of data from the Statewide Integrated Traffic Records System maintained by the California
Highway Patrol. The analysis covers the period from January 1995 through September 2001, except for San Diego, which suspended
its program on June 1, 2001.
The implementation of the red light camera program may
have had a spillover benefit in most of the local government
jurisdictions we reviewed. Accidents attributable to red light
violations also decreased at intersections without red light
cameras in four of the six communities whose data we analyzed.
Specifically, red light accident rates at intersections without
cameras fell by 3 percent in Los Angeles, 8 percent in San Diego,
and 14 percent in Oxnard and San Francisco. In contrast, at
intersections without cameras, the red light accident rate for
Sacramento was unchanged and for Fremont it increased 7 percent.
In Appendix D we display the average number of accidents per
month before and after the installation of red light cameras at
specific intersections of the local governments in our sample.
The appendix shows that red light accident rates at individual
intersections both decreased and increased during the time studied.
50 51
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����������������������������������
Other Accident Studies Show Similar Results
We reviewed two national studies from the Federal Highway
Administration (FHWA), and similar to our analysis, they
Similar to our analysis, showed that red light accidents and violations decreased after
two national studies the initiation of red light camera programs. One of the studies,
found that red light published in September 1999, evaluated the accident data of
accidents and violations five local governments across the country.1 Two participants
decreased after the in the study—Howard County, Maryland, and Polk County,
introduction of red light Florida—experienced a reduction in the overall number of red
camera programs. light accidents in the year after red light cameras were deployed
compared to the statistics for the year before deployment. In
Polk County, accidents decreased countywide by 7 percent from
1995 to 1996, but statewide accidents increased 4 percent during
the same period. One year after the program began in Howard
County, red light accidents had decreased 10 percent at one of
its intersections and 46 percent at the other.
The other study, published in August 2001, gathered statistics
from numerous sources, such as interviews with local
transportation agencies and periodicals, and concluded that
violations for running red lights decreased after the placement
of red light cameras.2 Reductions in violations ranged from
20 percent to 87 percent, with half the jurisdictions represented
in the study reporting reductions of between 40 percent and
62 percent. These studies indicate that both red light violations
and accidents decrease after red light cameras are installed.
Most of the local governments we visited also conducted their
own studies to determine whether red light accidents decreased
since beginning their programs. Because different local
governments used different data or applied different analyses,
we conducted our own analysis to provide a more consistent
comparison. Although their methodologies and data varied,
these local governments’ studies reached similar conclusions to
ours—that red light accidents decrease when red light cameras
are employed. See Appendix C for a discussion of these studies.
1 Synthesis and Evaluation of Red Light Running Automated Enforcement in the United States,
Federal Highway Administration, September 1999.
2 Automated Enforcement of Traffic Signals: A Literature Review, Federal Highway
Administration, August 2001.
52 53
MOST LOCAL GOVERNMENT RED LIGHT CAMERA
PROGRAMS OPERATE AT THE BREAK-EVEN POINT
OR AT A SLIGHT LOSS
Most of the local governments we visited did not receive
significant net revenues from their red light camera programs.
According to their cost accounting records or other cost data
they provided, some of which were based on estimates, three
of the seven local governments we visited are operating with
a cumulative deficit, as shown in Table 6. Only San Diego and
Oxnard have generated significant cumulative net revenues
from their red light camera programs. Long Beach has only
been operating its red light camera program since October 2001
and has not accumulated enough data for us to determine the
relationship between costs and revenue. Regardless, all seven
local governments maintain that whether or not their programs
provide any net revenue, they are achieving their main goal,
which is to promote traffic safety.
TABLE 6
Few Red Light Camera Programs Make Money
Fremont Los Angeles Oxnard Sacramento San Diego San Francisco
August 2000 June 1999 April 1997 May 1999 August 1998 August 1996
Cumulative revenue $360,000 $1,963,000 $578,000 $1,822,000 $8,205,000 $2,947,000
Cumulative vendor payments (275,000) (2,157,000) (97,000) (1,709,000) (3,834,000) (2,747,000)
Cumulative program
expenditures (80,000) (102,000) (73,000) (266,000) (3,246,000) (1,183,000)
Cumulative net revenue
(deficit) $ 5,000 $ (296,000) $408,000 $ (153,000) $1,125,000 $ (983,000)
Source: Accounting reports and other financial data provided by the local governments we visited.
Note: In Appendix E, we show the same information broken down by fiscal year. The amounts in this table are totals for each
local government from their respective program start dates through December 31, 2001, rounded to the nearest thousand.
The red light camera program for Long Beach started in October 2001; therefore, revenue and expenditure data were limited. As a
result, we did not include Long Beach in this analysis.
Accounting for Program Revenues and Expenditures Is Weak
Although good internal control practices dictate proper accounting
for revenues and expenditures, only Fremont can fully
account for the revenue and expenditures of its red light
camera program. Because each local government pays their
respective vendor based on the number of red light citations
that motorists’ pay, it would be prudent for them to properly
52 53
account for program revenues. Additionally, we found that only
Fremont and Long Beach conduct monthly reconciliations of
their vendors’ invoices with the courts’ payment records (where
traffic citations are paid) to ensure that they are paying their
vendors the appropriate amount.
The remaining five local governments rely solely on vendors’
invoices and are unable to conduct reconciliations with
the citations the courts show have been paid. For example,
Only Fremont and according to a city auditor report, the San Diego Police
Long Beach reconcile Department (police department) was unable to substantiate the
vendors’ invoices to ensure amount that the vendor billed the city because the local courts
that they are paying the were not differentiating between information on the revenue
correct amount. from its red light camera program and the revenue received from
other types of traffic citations. San Diego asked its city auditors
to review the vendor payments made from the start of the red
light camera program through May 2001 to determine if the city
had paid the vendor the correct amount. The auditors found
that the vendor had overbilled the city by more than $78,000,
and the police department reduced subsequent payments to the
vendor to correct for the overpayment. To provide better control
over future payments to the vendor, the police department
persuaded the local courts to separately account for revenues
from red light camera citations.
In addition to being unable to accurately account for revenues,
three of the local governments we visited do not properly
account for the expenditures of their red light camera
programs. San Diego, San Francisco, and Oxnard could only
provide us with estimates for some of their program costs. For
example, they calculated personnel costs by estimating the
percentage of time that staff spent on the program. San Diego’s
expenditures—which were the highest of all local governments
we visited—included estimated costs of nearly $1.4 million.
These estimates included the budgeted cost of six officers on
light duty and a sergeant who were dedicated to the program
for fiscal years 1997–98 and 1998–99, the daily overtime for two
officers who attended court hearings, one full-time city attorney
who prosecuted contested citations, and an estimated direct cost
amount representing between 10 percent and 20 percent of the
time of specific management employees—a lieutenant, captain,
assistant police chief, and three fiscal employees—for every
fiscal year of the program. These estimated costs also included
overhead rates for the police department, city attorney’s office,
and citywide administration. Because these costs were not based on
a cost accounting system that required employees to charge their
time to separate cost codes, we could not verify their accuracy.
54 55
San Francisco estimated some of its program’s personnel time
and does not track the cost related to the police department’s
staff that review and approve citations. Expenditure estimating
is less of a problem in Oxnard because less than the equivalent
of one full-time officer’s cost is dedicated to the red light
camera program. Without an accurate method of accounting
for program expenditures, these local governments cannot
accurately determine the cost-effectiveness of their programs
and ensure that local resources are used appropriately.
As indicated in Table 6, four of the six local governments now
break even or operate at a deficit. Only Oxnard and San Diego
have generated significant revenues from their respective
programs. Oxnard dedicates its net revenues to support the costs
of school crossing guards, and San Diego’s revenues go to its
general fund.
Vendor Fees and Administrative Costs Differ Significantly
The fees and fee structures that local governments pay their
vendors differ significantly, even though the vendors provide
basically the same services. As shown in Table 7 on the following
page, Oxnard pays the lowest fee, with the vendor receiving $25
per citation, while Fremont pays its vendor $106. San Francisco
and Los Angeles also pay their vendors a flat fee to cover certain
The variances in costs. Sacramento intends to switch to a flat fee to pay its vendor.
the amounts local These variances may be due to the relative size differences among
governments pay the programs and each local government’s negotiating ability.
their vendors may
be due to the size of The advantage of paying a fee for each paid citation is that the
the program and the local government does not have to pay a large amount all at
local government’s once. The downside of this method is that increasing profits
negotiating ability. by maximizing the number of citations issued might become
an incentive for vendors—and create a poor perception of the
red light camera program by the public. Conversely, paying
the vendor a flat fee removes any incentive to maximize the
number of citations issued to bolster profits but makes the local
government susceptible to the risk that, should the number of
citations issued decrease, it would not receive enough revenue to
pay the vendor.
To determine how cost-effective each local government is in
administering its red light camera program, we calculated the
administrative cost to issue each citation based on the number of
citations issued from the start of the program. Local governments
incur administrative costs, for items such as police officers’
54 55
and traffic engineers’ time, to operate their programs. Table 7
also shows how administrative costs varied substantially among
the local governments. San Diego had the highest administrative
cost at about $39 per citation, and Los Angeles had the lowest
at about $5 per citation. As previously mentioned, San Diego
included more administrative costs in its red light camera
program than did any other local government we visited. We did
not attempt to analyze why the administrative costs varied.
TABLE 7
Red Light Camera Fees and Costs for Calendar Year 2001 Varied Substantially
Fremont Long Beach Los Angeles Oxnard Sacramento San Diego San Francisco
Fee structure for
vendor compensation:
• Fixed monthly fee N/A N/A $56,000 N/A N/A N/A $79,000*
• Per citation paid fee $106 $97 35 $25 $87 $70 48.50
Total fee paid
per citation 106 97 113 25 87 70 106
Administrative cost
per citation† 20 N/A 5 7 8 39 31
Source: Accounting reports and other financial data provided by the local governments we visited.
N/A: Not applicable.
*San Francisco’s fixed monthly fee increased to approximately $79,000 in August 2001 from $61,000 because it began leasing six
additional red light cameras.
† The administrative cost per citation is equal to the local government’s cumulative program expenditures divided by the total
number of citations issued since the start of each respective program. The red light camera program for Long Beach started in
October 2001 and has not accumulated enough data for us to determine the relationship between costs and revenues.
RECOMMENDATION
To allow for better accountability over red light camera
programs and to ensure that vendors are paid appropriately,
local governments should improve their methods of tracking
revenues and expenditures related to their programs.
56 57
We conducted this review under the authority vested in the California State Auditor by
Section 8543 et seq. of the California Government Code and according to generally accepted
government auditing standards. We limited our review to those areas specified in the audit
scope section of this report.
Respectfully submitted,
ELAINE M. HOWLE
State Auditor
Date: July 23, 2002
Staff: Doug Cordiner, CGFM, Audit Principal
John Baier, CPA
Theresa M. Carey, CPA
Anna K. Escuadro
Kyle D. Gardner, PhD
Renju P. Jacob
56 57
Blank page inserted for reproduction purposes only.
58 59
APPENDIX A
Reasons Local Governments Do Not
Enforce Many Red Light Violations
Local governments enforce only a small percentage of the
total violations recorded at red light camera intersections
for several reasons. For example, if a driver or license
plate cannot be positively identified, the violation is considered
unenforceable. Of the total number of violations that red
light cameras capture, the seven local governments we visited
eventually enforced only 23 percent in 2001, as shown in Table A.1.
State law requires that for local governments to enforce a red light
camera violation, the photograph must clearly show the license
plate and the driver of the vehicle. Local governments have
found that obtaining clear photographs is difficult at times and
that this difficulty has prevented them from enforcing a large
percentage of red light camera violations.
Before a local government issues any citations, its vendor
initially screens out unenforceable violations based on several
criteria. A vendor might reject violations due to controllable
factors, such as a malfunctioning camera that produces
photographs that are out of frame or images that are too
dark to identify. The vendor can control these factors by later
making the necessary adjustments to the equipment. Other
factors that might cause a vendor to screen out violations
are uncontrollable, such as a vehicle without a front license
plate, making the identification of the violator impossible. For
economic reasons, many local governments have chosen a red
light camera system that can only photograph a front plate, and
the absence of the front license plate prevents the processing
of many potential citations. Some factors that vendors use in
screening violations are determined at the discretion of each
local government. Termed business rules, these discretionary
factors include instances when the gender or age of the person
photographed does not appear to match that of the registered
owner. The vendor also screens out photographs when it is clear
that no violation occurred. This might happen if a vehicle makes
a sudden stop, triggers the camera, but does not proceed across
the intersection.
58 59
60 61
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803,532
600,48
819,44
445,55
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152,83
415
572,9
snoitaloiv
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387,28
378,82
446,8
121,52
813
728,91
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525,251
331,55
472,63
324,03
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60 61
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After the initial screening, the vendor fills out citations and
forwards them to the appropriate law enforcement agency for
review and approval. At this point, the law enforcement agency
may still not enforce some violations because it does not believe
the photograph is clear enough to identify the driver of the
vehicle if challenged in court. Table A.1 presents in more detail
the key reasons violations are rejected by both vendors and law
enforcement agencies and the difference between the potential
violations and the number of citations issued in 2001 for the
local governments we reviewed.
62 63
APPENDIX B
Local Governments That Employ Red
Light Cameras as of April 2002
Local governments scattered throughout California employ
red light cameras. These programs vary depending on the
vendor used, the type of photographic device employed,
and the number of intersections included. Table B.1 on the
following page lists the local governments that currently have
red light cameras installed.
Currently in California, three vendors contract with local
governments to implement red light camera devices: Affiliated
Computer Services, Inc. (ACS); Redflex Traffic Systems, Inc.
(Redflex); and Nestor Traffic Systems, Inc. (Nestor). Each vendor
uses a different type of technology that produces a different type
of product: wet film, digital print, and video. ACS uses the most
traditional technology, wet film. It produces a negative that
must be retrieved at the intersection and then developed using
conventional film development methods. In contrast, Redflex
employs a digital print technology and Nestor a digital video
technology; both allow the vendors to electronically download
and transmit the violation data for processing.
As Table B.1 shows, the number of intersections, approaches, and
cameras each local government uses varies. An intersection
usually consists of two streets that cross or intersect and can
therefore be approached in four different directions. Because
of the traffic dynamics at any given intersection, a local
government could decide to enforce one or more approaches.
For example, Fremont has cameras at seven intersections but
is enforcing only one approach per intersection. Conversely,
Long Beach has cameras operating at three intersections and
enforces all four approaches at each of those intersections.
Additionally, the local governments must decide whether the
cameras installed at the intersections will remain stationary
or rotate among various intersections. A camera might remain
stationary because the intersection is considered hazardous. In
contrast, a local government might choose to rotate its cameras
for wider coverage. For example, Fremont has determined that its
red light cameras should be stationary and operate continuously,
but Oxnard rotates its four cameras among its 11 intersections.
62 63
TABLE B.1
Local Governments Scattered Throughout the State Employ Red Light Cameras
Date
Type of Program Number Do
Technology Went Into Number of Number of of Camera Cameras
Local Government Vendor* Used Operation Intersections Approaches Systems† Rotate?
Beverly Hills ACS Wet film May 1997 3 8 8 No
Culver City Redflex Digital photo February 1999 7 15 15 No
Cupertino ACS Wet film July 2001 2 3 5 No
El Cajon ACS Wet film August 1996 6 6 2 Yes
Fremont Redflex Digital photo August 2000 7 7 7 No
City of Fresno Nestor Video April 2002 2 8 8 No
Garden Grove Redflex Digital photo January 2001 1 2 2 No
Indian Wells ACS Wet film February 2000 3 4 4 No
Long Beach Nestor Video October 2001 3 12 12 No
City of Los Angeles ACS Wet film December 2000 9 18 18 No
Los Angeles County ACS Wet film June 1999 5 14 10 Yes
Oxnard ACS Wet film April 1997 11 11 4 Yes
Rancho Cucamonga Nestor Video April 2002 1 4 4 No
City of Sacramento‡ ACS Wet film May 1999 11 16 10 Yes
Sacramento County‡ ACS Wet film April 2001 5 6 7§ No
City of San Diego¶ ACS Wet film August 1998 19 19 19 No
City and county of
San Francisco PRWT** Wet film August 1996 17 31 18 Yes
San Juan Capistrano Redflex Digital photo March 2000 3 6 6 No
City of Ventura Redflex Digital photo April 2001 15 16 16 No
West Hollywood ACS Wet film June 1999 8 24 24 No
Source: Staff of the red light camera programs from each local government listed and also the staff from the vendors listed. These
programs were in place as of April 2002.
* Affiliated Computer Services, Inc. (ACS); Redflex Traffic Systems, Inc. (Redflex); Nestor Traffic Systems, Inc. (Nestor); and PRWT,
Inc. (PRWT).
† The Redflex technology uses a two-camera system per approach, and Nestor uses a three-camera system.
‡ Both the city and county of Sacramento suspended operations on April 30, 2002, to resolve certain concerns with their
programs. The county restarted its program on July 1, 2002.
§ Sacramento County uses two cameras to enforce a multi-lane left turn intersection.
¶ San Diego suspended use of red light cameras in June 2001 to evaluate the program. It is included in the table because we
reviewed its program during the audit.
** San Francisco contracts for services with PRWT, which in turn subcontracts with ACS to perform the majority of the citation
review and processing. It chose to contract with PRWT instead of directly with ACS because U.S. Public Technologies, the
original contractor, assigned the contract to PRWT.
64 65
APPENDIX C
Local Government Accident Studies
As shown in Table C.1, the results of other studies on
accident reduction trends are similar to our analysis. We
did not attempt to validate these studies because we were
conducting our own analysis.
The Oxnard study was conducted by the Insurance Institute
for Highway Safety (IIHS) in April 2001 and concluded that red
light accidents decreased substantially after the placement of
cameras. Using the Statewide Integrated Traffic Records System
(SWITRS), the IIHS analyzed 29 months of data before and after
the initiation of the red light camera operation. At intersections
with traffic signals, the overall accident rate decreased in Oxnard
by 7 percent, but broadside accidents, the type most associated
with motorists running red lights, decreased by 32 percent. We
focused on red light accidents, and our analysis shows more
pronounced decreases of 21 percent for red light accidents at all
intersections combined and a 55 percent decrease for only the
intersections with red light cameras, which may be explained by
the additional two years of data we included after the program
began in Oxnard. Although the magnitude of our results may
differ from the other studies, we came to the same conclusion—
the number of red light collisions decreased after red light
cameras were implemented.
A recent study by a consulting firm hired by the San Diego
Police Department also showed a significant reduction in
accidents in that city. Using more than six years of data, from
April 1995 to October 2001, from San Diego’s traffic engineering
department, the consulting firm computed the average monthly
accident rates for each year for each intersection with a red light
camera. Its analysis showed a 30 percent decrease in red light
accidents compared with the 16 percent reduction we found.
The consulting firm conducted additional analyses of violations
and rear-end accident rates and found that red light violations
decreased by 20 percent to 24 percent and rear-end collisions
increased 37 percent. The consulting firm hypothesized that
motorists would eventually adjust to red light cameras and pay
more attention to vehicles stopping in front of them. The
limited data available to the consulting firm suggested that
64 65
rear-end collisions would decrease over time, but it felt more
data was needed to confirm that the increased rate of rear-end
collisions will not be sustained.
Sacramento, San Francisco, and Los Angeles conducted less formal
internal accident studies that yielded similar reductions in red
light accidents to those found in our analysis. As we did for our
analysis, Sacramento and San Francisco used SWITRS data.
66 67
TABLE C.1
Our Analysis Compares Favorably With Other Local Government Accident Studies
Comparison
With Bureau
Local Period of State Audits
Government Name of Study Data Used Methodology Reviewed Results Study
Oxnard Crash Reductions Statewide Regression analysis 29 months At signalized No analysis was
Associated With Integrated before and after intersections, conducted for all
Red Light Camera Traffic the red light 7 percent types of accidents.
Enforcement in Records camera program decrease in all Decreases of
Oxnard, CA., by System for a total of accidents and 21 percent for red
the Insurance 58 months 32 percent light accidents at
Institute for decrease in all intersections
Highway Safety broadside and 55 percent at
collisions. intersections with
red light cameras.
San Diego City of City data Calculated right- April 1995 to Decrease in Violation and
San Diego Photo angle accident October 2001 violations of rear-end collision
Enforcement rates at red 20 percent to analysis was
System Review, light camera 24 percent. not conducted.
by PB Farradyne, intersections. Also Increase in rear- Decrease of
Inc. analyzed violation end collisions 16 percent in red
trends and rear- of 37 percent. light accidents at
end collisions. Decrease in red intersections with
light collisions at red light cameras.
intersections of
30 percent.
Sacramento Red Light Camera Statewide Compiled yearly July 1998 to At all red Decrease of
Traffic Safety Integrated accident totals and September 2001 light camera 44 percent in red
Evaluation, by Traffic found percentage intersections, light accidents at
Sacramento Records change. 33 percent intersections with
City Police System decrease in red light cameras.
Department’s and city broadside
Traffic Division data collisions in the
first year of the
program.
San Can We Make Statewide Yearly red light Calendar years Injury collisions All red light
Francisco Red Light Integrated accident totals 1992 to 1997 attributable to accidents
Runners Stop? Traffic compared to the red light running decreased
by San Francisco Records five-year average decreased 16 percent
Department System before red light 9 percent citywide since the
of Parking and cameras. citywide in the program began.
Traffic first year.
Los Angeles Current Status CHP offices Found an accident May 1997 to Red light Red light
and Cost Analysis rate by dividing September 2001 accidents accidents
Report the number of decreased at decreased at
accidents caused three of five four of five
by the running intersections. intersections.
of red lights
by intersection
volume and the
number of days.
Computed the
rates before and
after deployment of
red light cameras.
66 67
Blank page inserted for reproduction purposes only.
68 69
APPENDIX D
Accident Rates at Selected Red Light
Camera Intersections
As discussed in Chapter 2, we used data from the Statewide
Integrated Traffic Records System (SWITRS), produced
by the California Highway Patrol (CHP), to analyze the
change in average monthly accident rates throughout the State
and for the local governments we visited. This appendix uses the
same red light accident data but takes the analysis a step further
by reviewing accident rates at each intersection with a red light
camera within six of the seven local governments we reviewed.
The accident data presented in this appendix represents the
period from January 1, 1995, through September 30, 2001.
Because red light cameras were installed on various dates
for each of the local governments’ respective intersections,
Table D.1 on page 71 uses the operation date as the initial point
when red light camera enforcement began. Finally, as noted
previously, we could not perform this analysis for Long Beach
because its red light camera program was implemented in
October 2001, and the most recent data available from the
SWITRS covers the period through September 2001.
Although the SWITRS provides a consistent source of data for
making comparisons, local governments may have made errors
or reported inconsistently to the CHP. When compiling accident
statistics for individual intersections, we noted that different
spellings and abbreviations were sometimes used for the same
intersection. For example, in San Diego, one intersection that
houses a red light camera is at Euclid and Imperial Avenues.
However, officers sometimes wrote “North Euclid” or “South
Euclid” rather than “Euclid,” and at other times they wrote
“Emperial” rather than “Imperial.” To correctly count all
the accidents that occurred at this intersection, it would be
necessary to identify and correct all possible spelling errors or
variations of intersection names. Although we made an effort to
detect them, some of these errors might remain.
Also, the SWITRS includes all reported fatal, injury, and property
damage collisions from local police and sheriff departments.
However, the Vehicle Code requires local governments to
report only fatal and injury accidents to the CHP; they are not
required to report accidents involving just property damage.
68 69
Thus, the number of property damage accidents included in the
SWITRS may be understated. However, the local governments
in our sample did report accidents involving property damage.
Lastly, although the CHP verifies the completeness of the data
reported, it does not verify its accuracy. Thus, other data errors
or inconsistencies may exist in the figures submitted by local
governments.
In most cases, the average monthly rate of accidents decreased
at intersections after red light cameras were installed. However,
accident rates actually increased at several intersections. When
interpreting this data, it is important to note that when the
number of accidents at a given intersection are few, a small
average monthly increase or decrease in the number of red light
accidents can cause a substantial percentage change. Further,
as noted previously, the SWITRS data may contain errors or be
incomplete. Nonetheless, the following tables show that the
accident rates generally fell after the installation of red light
cameras at intersections; therefore, these cameras appear to be
effective in improving traffic safety.
70 71
TABLE D.1
Change in the Average Number of Accidents per Month
Before and After the Red Light Camera Program
Fremont
Location Date Operational
70 71
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Mowry Avenue at Fremont Boulevard August 25, 2000 21 0.31 3 0.23 -27%
Mowry Avenue at Blacow Road November 4, 2000 8 0.11 2 0.18 62
Stevenson Boulevard at Fremont
Boulevard November 4, 2000 13 0.19 2 0.18 -1
Paseo Padre Parkway at Fremont
Boulevard January 10, 2001 20 0.28 2 0.23 -16
Fremont Boulevard at Decoto Road February 28, 2001 9 0.12 0 0.00 -100
Auto Mall Parkway at Grimmer
Boulevard March 6, 2001 4 0.05 0 0.00 -100
Fremont Boulevard at Auto Mall Parkway May 7, 2001 9 0.12 2 0.42 253
Total of red light camera
intersections August 25, 2000 81 1.19 14 1.06 -11
Total of non-red light camera
intersections August 25, 2000 835 12.31 173 13.12 7
Total of all intersections August 25, 2000 916 13.51 187 14.18 5%
Source: Bureau of State Audits analysis of accident data from the Statewide Integrated Traffic Records System, maintained by the
California Highway Patrol covering the period from January 1, 1995, through September 30, 2001. We used the date each local
government started its program to compute the total of intersections. For individual intersections, we used the date cameras
began operating at each intersection.
* The numbers displayed are rounded to two decimal points, however, the calculations used the unrounded amounts.
Los Angeles County
Location Date Operational
72 73
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Arrow Highway at Glendora Avenue June 28, 1999 16 0.30 4 0.15 -50%
Colima Road at Batson Avenue July 28, 1999 30 0.55 8 0.31 -44
Hacienda Boulevard at La Monde Street July 28, 1999 21 0.38 5 0.19 -50
Wilshire Boulevard at Sepulveda
Boulevard October 12, 1999 16 0.28 9 0.38 37
Whittier Boulevard at Atlantic Boulevard August 1, 2000 8 0.12 1 0.07 -40
Total of red light camera
intersections June 28, 1999 87 1.61 31 1.14 -29
Total of non-red light camera
intersections June 28, 1999 3,282 60.91 1,602 59.06 -3
Total of all intersections June 28, 1999 3,369 62.52 1,633 60.21 -4%
Source: Bureau of State Audits analysis of accident data from the Statewide Integrated Traffic Records System, maintained by the
California Highway Patrol covering the period from January 1, 1995, through September 30, 2001. We used the date each local
government started its program to compute the total of intersections. For individual intersections, we used the date cameras
began operating at each intersection.
* The numbers displayed are rounded to two decimal points, however, the calculations used the unrounded amounts.
Oxnard
Location Date Operational
72 73
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Channel Island Boulevard at C Street April 29, 1997 12 0.43 12 0.23 -47%
Gonzales Road at H Street April 29, 1997 13 0.47 8 0.15 -68
Harbor Boulevard at Wooley Road April 29, 1997 5 0.18 5 0.09 -47
Rice Avenue at Sturgis Road April 29, 1997 2 0.07 5 0.09 31
Rose Avenue at Camino Del Sol April 29, 1997 8 0.29 9 0.17 -41
Rose Avenue at Wooley Road April 29, 1997 3 0.11 5 0.09 -12
Saviers Road at Pleasant Valley Road April 29, 1997 5 0.18 9 0.17 -5
Ventura Boulevard at Vineyard Avenue April 29, 1997 3 0.11 1 0.02 -82
Ventura Road at Bay Boulevard April 29, 1997 4 0.14 4 0.08 -47
Ventura Road at Doris Avenue April 29, 1997 12 0.43 4 0.08 -82
Channel Island Boulevard at Rose
Avenue September 17, 1997 10 0.31 2 0.04 -87
Total of red light camera
intersections April 29, 1997 76 2.72 65 1.22 -55
Total of non-red light camera
intersections April 29, 1997 405 14.51 659 12.41 -14
Total of all intersections April 29, 1997 481 17.23 724 13.64 -21%
Source: Bureau of State Audits analysis of accident data from the Statewide Integrated Traffic Records System, maintained by the
California Highway Patrol covering the period from January 1, 1995, through September 30, 2001. We used the date each local
government started its program to compute the total of intersections. For individual intersections, we used the date cameras
began operating at each intersection.
* The numbers displayed are rounded to two decimal points, however, the calculations used the unrounded amounts.
City of Sacramento
Location Date Operational
74 75
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Valley Hi Drive at La Mancha Way and
Mack Road May 26, 1999 33 0.63 7 0.25 -60%
El Camino Avenue at Evergreen Street June 4, 1999 12 0.23 7 0.25 11
Howe Avenue at Fair Oaks Boulevard June 9, 1999 27 0.51 5 0.18 -64
Mack Road at Center Parkway December 2, 1999 7 0.12 1 0.05 -62
Exposition Boulevard at Ethan Way December 17, 1999 15 0.25 2 0.09 -63
30th Street at Capitol Avenue February 28, 2000 26 0.42 4 0.21 -50
Alhambra Boulevard at J Street March 2, 2000 9 0.15 0 0.00 -100
Broadway at 21st Street March 13, 2000 15 0.24 2 0.11 -55
W Street/US 50 at 16th Street June 29, 2000 6 0.09 0 0.00 -100
College Town Drive at Howe Avenue July 13, 2000 67 1.01 8 0.55 -46
Total of red light camera
intersections May 26, 1999 195 3.69 58 2.06 -44
Total of non-red light camera
intersections May 26, 1999 2,524 47.80 1,349 47.82 0
Total of all intersections May 26, 1999 2,719 51.50 1,407 49.88 -3%
Source: Bureau of State Audits analysis of accident data from the Statewide Integrated Traffic Records System, maintained by the
California Highway Patrol covering the period from January 1, 1995, through September 30, 2001. We used the date each local
government started its program to compute the total of intersections. For individual intersections, we used the date cameras
began operating at each intersection.
* The numbers displayed are rounded to two decimal points, however, the calculations used the unrounded amounts.
City of San Diego*
Location Date Operational
74 75
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Aero Drive at Murphy Canyon Drive August 1, 1998 6 0.14 11 0.32 132%
Bernardo Center Drive at Rancho
Bernardo Road August 1, 1998 1 0.02 1 0.03 26
El Cajon Boulevard at 43rd Street August 5, 1998 7 0.16 4 0.12 -27
College Avenue at Montezuma Avenue December 7, 1998 5 0.11 2 0.07 -37
Garnet Avenue at Ingraham Street December 7, 1998 3 0.06 2 0.07 6
Harbor Drive at 32nd Street December 7, 1998 3 0.06 1 0.03 -47
La Jolla Village Drive at Towne
Centre Drive December 7, 1998 9 0.19 1 0.03 -82
16th Street at F Street April 2, 1999 4 0.08 2 0.08 -2
Imperial Avenue at Euclid Avenue April 2, 1999 6 0.12 4 0.15 31
Mira Mesa Boulevard at Black Mountain
Road April 2, 1999 5 0.10 0 0.00 -100
Harbor Drive at Grape Street October 7, 1999 0 0.00 0 0.00 0
10th Avenue at A Street February 24, 2000 15 0.24 4 0.26 9
Carmel Mountain Road at Rancho
Carmel Drive February 24, 2000 7 0.11 1 0.07 -42
Miramar Road at Camino Ruiz February 24, 2000 6 0.10 1 0.07 -32
Black Mountain Road at Gemini Avenue April 20, 2000 11 0.17 1 0.07 -57
Mira Mesa Boulevard at Scranton Road April 20, 2000 8 0.13 0 0.00 -100
Mission Bay Drive at Garnet Avenue May 19, 2000 10 0.15 1 0.08 -48
Mission Bay Drive at Grand Avenue May 19, 2000 3 0.05 1 0.08 74
Mission Boulevard at Garnet Avenue May 19, 2000 2 0.03 0 0.00 -100
Total of red light camera
intersections August 1, 1998 89 2.07 59 1.74 -16
Total of non-red light camera
intersections August 1, 1998 2,149 49.97 1,571 46.21 -8
Total of all intersections August 1, 1998 2,238 52.04 1,630 47.95 -8%
Source: Bureau of State Audits analysis of accident data from the Statewide Integrated Traffic Records System, maintained by the
California Highway Patrol covering the period from January 1, 1995, through September 30, 2001. We used the date each local
government started its program to compute the total of intersections. For individual intersections, we used the date cameras
began operating at each intersection.
*The information for city of San Diego is up to June 1, 2001, which is the date the city suspended its program.
† The numbers displayed are rounded to two decimal points, however, the calculations used the unrounded amounts.
City and County of San Francisco
Location Date Operational
76 77
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7th Street at Mission Street August 5, 1996 7 0.37 34 0.55 50%
5th Street at Howard Street October 30, 1996 12 0.55 17 0.29 -47
19th Avenue at Sloat Boulevard January 10, 1997 12 0.49 10 0.18 -64
9th Street at Howard Street September 18, 1997 15 0.46 5 0.10 -78
Pine Street at Presidio Avenue September 20, 1997 16 0.49 8 0.17 -66
6th Street at Bryant Street December 6, 1999 32 0.54 0 0.00 -100
1st Street at Folsom Street March 14, 2000 16 0.26 1 0.05 -79
14th Street at South Van Ness Avenue June 21, 2000 23 0.35 8 0.52 49
Geary Street at Franklin Street June 21, 2000 44 0.67 6 0.39 -42
15th Street at Mission Street August 4, 2000 22 0.33 4 0.29 -12
Pine Street at Polk Street October 4, 2000 21 0.30 2 0.17 -45
Hayes Street at Polk Street November 1, 2000 22 0.31 2 0.18 -42
5th Street at Mission Street November 13, 2000 34 0.48 2 0.19 -61
8th Street at Harrison Street February 1, 2001 38 0.52 1 0.13 -76
3rd Street at Harrison Street April 2, 2001 30 0.40 0 0.00 -100
Bush Street at Van Ness Avenue April 2, 2001 24 0.32 0 0.00 -100
5th Street at Harrison Street April 3, 2001 17 0.23 0 0.00 -100
Total red light camera intersections August 5, 1996 159 8.31 326 5.27 -37
Total non-red light camera
intersections August 5, 1996 1,330 69.51 3,715 60.04 -14
Total of all intersections August 5, 1996 1,489 77.82 4,041 65.31 -16%
Source: Bureau of State Audits analysis of accident data from the Statewide Integrated Traffic Records System, maintained by the
California Highway Patrol covering the period from January 1, 1995, through September 30, 2001. We used the date each local
government started its program to compute the total of intersections. For individual intersections, we used the date cameras
began operating at each intersection.
* The numbers displayed are rounded to two decimal points, however, the calculations used the unrounded amounts.
APPENDIX E
Red Light Camera Revenues
and Expenditures
In Chapter 2, we included the cumulative red light camera
revenue and expenditure amounts or estimates for the
six local governments we visited. Each local government
with available data reported its revenues and expenditures,
and we matched the figures to supporting accounting records
to determine the reasonableness of the reported amounts,
where possible. However, as described in Chapter 2, some local
governments—San Diego, San Francisco, and Oxnard—could
only provide us with estimates of certain costs. Table E.1 on
the following page shows the breakdown by fiscal year of
revenues and expenditures. Most of the local governments
used weak accounting practices for recording revenues and
expenditures for their red light camera programs. Therefore, the
amounts in the table may contain some errors.
76 77
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*
Agency’s comments provided as text only.
City of Fremont Police Department
2000 Stevenson Boulevard
Fremont, CA 94537-5007
July 10th, 2002
The State Auditor*
Bureau of State Audits
555 Capitol Mall, Suite 300
Sacramento, Ca 95814
Attention: John Baier
Re: “Red-light Camera Program Audit Report” – July 2002
A draft copy of the Audit Report was provided to the City of Fremont on 07/02/02 and the State
Auditor requested our review and comments be submitted to their office by 07/09/02. A request
was made for an extension to 07/23/02 however we were allowed an extra half a day to submit our
comments. Please note that due to the time constraints a detailed review of the audit report was not
completed.
Following our exit meeting on 07/09/02 and upon review of the report both by the Police Depart-
ment and City Engineering Department the following items and comments have been noted.
1
1. We noted that some of the terminology appears to be used incorrectly e.g. dangerous (what
is the basis/measure used to call an intersection “dangerous”.), CalTrans “standards” – Cal-
2
Trans does not establish a “standard” for the yellow change interval, however provides recom-
mended “values” to be used…etc.
2. Page 58 - We have included a Speed/Distance calculation worksheet that shows the minimum
distance traveled feet per tenth of a second at a given rate of speed. Recommend that this be
added to the report as an appendix.
3
3. Page 68 – Accident rates may have increased at other intersections without the cameras,
however, Statistical data should be obtained on individual intersections installed with Red-
light cameras one year prior and one year after camera installation to show a true analysis
of the decrease in accident rates (enclosed are our internal statistical information relating to
three intersections that were in operation for approximately a year and that is within the time
frame of your audit report which shows a total decrease of 41.66%.) However this is based on
absolute data and has not been normalized. Traffic Accident data should be normalized with
respect to Traffic Volume. In traffic engineering, collision rates can be determined in several
ways depending on the context of the analysis. There are two types of collision rates (1) road-
way segment and (2) intersection rates.
For intersection collision rate analysis, such rates can be based on the # of vehicles, vehicles miles
traveled, per 10,000 registered or per 10,000 population, per one million entering vehicles, etc.
* California State Auditor’s comments appear on page 81.
78 79
By this method, one can compare one intersection from another. No two intersections are
ever the same (i.e. different geometries, different trip attractions, different characteristics),
which may attribute to different collision rates.
To better analyze any given intersection, we typically analyze on a per million entering
vehicles.
Rate per million entering vehicles = (accident * 1,000,000) /( 24-hour volume*365)
With this method, we can generally normalize each intersection and be able to compare one
intersection to another.
4. Page 72 – “Fremont pays its vendor $106 – the reason being that there are no upfront equip-
ment costs for the City of Fremont when the cameras are installed.
Sincerely,
(Signed by: Craig T. Steckler)
_______________________
CRAIG T. STECKLER
Chief of Police
Note: Fremont also provided us copies of internal statistical information relating to accidents at three intersections and a speed/
distance calculation worksheet. Because we could not reproduce legible copies of these documents, we have not included them
with Fremont’s response. These documents are available for inspection at our office during business hours upon request.
80 81
COMMENTS
California State Auditor’s Comments
on the Response From the City
of Fremont
To provide clarity and perspective, we are commenting
on the City of Fremont’s (Fremont) response to our audit
report. The numbers below correspond to the numbers we
placed in the margins of Fremont’s response.
1
We stand by our description of certain intersections as being
“dangerous” based on accident data that Fremont provided to us
when selecting intersections for red light cameras.
2
In the context of this report, the term “standard” is used when
describing the yellow light time intervals contained in the California
Department of Transportation’s (Caltrans) traffic manual. The
law, which took effect as of January 1, 2002, requires that the
minimum yellow light time intervals at intersections equipped
with red light cameras conform to those contained in Caltrans’
traffic manual. Thus, we feel it is appropriate to use the term
standard when referring to these required time intervals.
3
We recognize that there are a variety of methods to analyze
accident statistics. In fact, we describe several of these methods
in Appendix C on page 65. The method we chose to employ
was very similar to the one used in a study performed at one of
the local governments we visited. The method we used was also
recommended by our statistical consultant.
80 81
Blank page inserted for reproduction purposes only.
82 83
Agency’s comments provided as text only.
City of Long Beach
Office of the City Manager
333 West Ocean Boulevard
Long Beach, California 90802
July 10, 2002
John Baier, CPA*
Bureau of State Audits
555 Capitol Mall, Suite 300
Sacramento CA 95814
Subject: Exit Response
Dear Mr. Baier:
In response to the City’s review of the draft audit report submitted to the City on Tuesday, July 2,
2002, the City has the following comments/responses:
Recommendation No. 1: “Before installing red light cameras, local governments should first con-
sider whether the engineering measures, such as improving signal light visibility or using warning
signs to alert motorists of an upcoming traffic signal, would improve traffic safety and be more effec-
tive in addressing red light violations.”
Response: The City of Long Beach will, prior to all future automated photo red light enforcement
installations, conduct a specific engineering review at each of the locations identified for potential
photo red light enforcement to specifically determine if there are any engineering measures not
previously noted during our ongoing evaluations which can be applied to the respective locations to
potentially reduce red light violations.
Recommendation No. 2: “To focus on traffic safety and avoid overlooking high-accident locations
that are state-owned when considering where to place red light cameras, local governments should
diligently pursue the required Caltrans permitting process, even though it may cause some delays
to their programs.”
Response: For purposes of the City’s photo red light enforcement pilot program, the inclusion of
state-owned intersections were not considered due to the possibility that equipping these locations
would unnecessarily delay our pilot program for implementation. However, state-owned intersec-
tions will be considered if the program is adopted permanently.
* California State Auditor’s comments appear on page 87.
82 83
Re: Exit Response
July 10, 2002
Page 2
Recommendation 3: “To avoid the risk of legal challenges local governments should petition Cal-
trans to clarify its traffic manual to explain when local governments should use either posted speeds
or the results from a speed survey to establish yellow light time intervals at intersections equipped
with red light cameras.”
Response: The City of Long Beach’s practice of setting yellow intervals based on posted speed
limits is in compliance with Caltrans traffic signal timing guidelines. However, in order to resolve the
ambiguity of the term “approaching speed of traffic” as worded in the Caltrans Traffic Manual, the
City of Long Beach will request that Caltrans revise the Traffic Manual language to clarify the term’s
intended meaning. It is anticipated that this issue will need to be reviewed by the California Traffic
Control Devices Committee prior to any changes taking place. If the language in the Traffic Manual
is revised to specify that yellow intervals shall be set according to the measured prevailing speed of
traffic, the City of Long Beach will ensure that all yellow intervals are set according to the prevailing
speed of traffic, as measured through a speed survey.
Recommendation 4: “A periodic reconciliation of the number of citations the local government
authorized and approved with those the vendor mailed during the same period of time.”
Response: The City plans to implement within 60 days a reconciliation between the number of cita-
tions approved by the Long Beach Police Department and the number of citations issued by our
contractor.
Recommendation 5: “A provision requiring the confidentiality of all photographs.”
Response: The City has amended the contract inserting specific language regarding the confidenti-
ality of photographic evidence.
In addition, attached is a memorandum from the City Auditor, Mr. Gary Burroughs, noting concerns
with this report. If you need further information, please advise me accordingly.
Thank you for the opportunity to respond to the draft audit.
Sincerely,
(Signed by: Gerald R. Miller for)
HENRY TABOADA
CITY MANAGER
Attachment
84 85
City of Long Beach Memorandum
Office of the City Auditor
Date: July 10, 2002
To: Henry Taboada, City Manager
From: Gary Burroughs, City Auditor
Subject: Red Light Camera Program Audit
At your request I have reviewed the draft report of the Red Light Camera Programs audit issued
by the California State Auditor. I have reviewed the report from both a professional and practical
perspective, and have several comments.
First, a program audit is conducted to evaluate the performance of a program against stated goals
and outcomes. Because programs from multiple jurisdictions were included in the scope of this
report, I would consider the results to be more in line with a “study” rather than an “audit”. This
report combines exceptions that apply to one or more jurisdictions utilizing one or more technolo-
gies and includes global conclusions about Red Light Camera systems without acknowledging the
programs’ differences. It appears that in an attempt to summarize results that apply to different
jurisdictions and different programs, the auditor has risked misinterpretation by the reader.
Government Auditing Standards (Section 7.18) require that, in reporting findings, auditors “…should
include sufficient, competent and relevant information to promote adequate understanding of
1
the matters reported and to provide convincing but fair representations in proper perspective.” I
believe the auditors have deviated in this case. For example, the Summary section of the report
implies that jurisdictions did not place cameras at dangerous intersections. The argument states
“…although the most common reason for choosing red light camera sites was traffic safety….local
governments…avoided placing cameras at some of the dangerous state-owned intersections. Long
Beach anticipated that obtaining State permission would delay their program.”
As you know, Long Beach selected 4 of the top 10 most dangerous intersections for the red light
program. Because the program is a pilot program and State permitting can take several months or
more, we did avoid state-owned intersections. However, these pertinent facts do not appear until
page 38 of the report.
84 85
Another example of “insufficient relevant information” appears on page 4, where the auditor states,
“Further, we could not always determine if local governments addressed engineering improvements
to the intersections before installing cameras.”
In fact, Long Beach provided the auditors with evidence that the City performs ongoing evaluations
of high-accident intersections for engineering improvements; however, this is not acknowledged
1
until page 35 of the report. Again, the reader could misinterpret the statements in the Summary
section to mean that there was no evidence that the City considered engineering improvements at
the sites.
My office contacted the auditor in charge to relate our concerns illustrated above and the auditor
indicated that, because of the need to summarize the differing results at multiple jurisdictions, they
were unwilling to provide pertinent detail that would more accurately reflect the conditions at Long
Beach.
Additionally, recommendations in the report are not always directed to the appropriate entity. For
example, the report recommends that Long Beach and other jurisdications, “…petition Caltrans to
clarify its traffic manual to explain when local governments should use either posted speeds or the
results from a speed survey to establish yellow light time intervals ...” Currently, the manual only
dictates the required yellow light duration based on the approach speed and local governments use
one of two generally accepted methods for determining approach speed, either the posted speed
2
or a speed survey. In addition, it could be considered inappropriate for Long Beach to utilize one
method for just those intersections equipped with red light cameras and another method for all
other intersections. Regardless, the auditor in charge was queried as to why this recommenda-
tion is not being made directly to the Legislature so that they can direct Caltrans to make such a
change, being that the State Auditors feel strongly that it is required. However, they responded that
they will not make such recommendations.
In summary, it is disappointing that readers or the media might draw conclusions about the Long
1
Beach Red Light Program from generalized commentary that does not accurately depict the condi-
tions in Long Beach. I would be happy to discuss these observations with you in more detail.
86 87
COMMENTS
California State Auditor’s Comments
on the Response From the City
of Long Beach
To provide clarity and perspective, we are commenting on
the City of Long Beach’s (Long Beach) response to our
audit report. The numbers below correspond to the
numbers we placed in the margins of Long Beach’s response.
1
The city auditor of Long Beach takes issue with the way
that we structure our reports, implying that it does not meet
with government auditing standards. We disagree. Our reports
include a “Results in Brief” section that presents a high-level
summary of our findings and recommendations. This sum-
mary section is not meant to include every aspect of the issues
more fully discussed in the report as doing so would defeat the
purpose of including a summary. Furthermore, Long Beach
acknowledges in its response that we discuss the pertinent facts
in the body of the audit report. Finally, as noted on page 57 of
the report, we conducted this audit in accordance with generally
accepted government auditing standards.
2
We chose to address this recommendation to the auditees of
the report, which in this case were the local governments. As
the local governments are the entities that bear the risk of legal
challenges should they fail to comply with the law when setting
yellow light time intervals at intersections equipped with red
light cameras, they should seek clarification from the California
Department of Transportation for the method to use so as to
mitigate that risk.
86 87
Blank page inserted for reproduction purposes only.
88 89
Agency’s comments provided as text only.
County of Los Angeles
Department of Public Works
900 South Fremont Avenue
Alhambra, California 91803-1331
July 9, 2002
Ms. Elaine M. Howle
California State Auditor
555 Capitol Mall, Suite 300
Sacramento, CA 95814
Dear Ms. Howle:
RED LIGHT CAMERA PROGRAM AUDIT
Enclosed is our response to the recommendations pertaining to Los Angeles County that are
contained in your audit report. Also, as requested, a copy of this cover letter and our response has
been saved on the enclosed diskette. Overall, we generally agree to the findings in the report and
will initiate actions to improve this program.
If you have any questions or require further assistance, please call me or you may call Raymond
Low at (626) 458-6950.
Very truly yours,
(Signed by: James A. Noyes)
JAMES A. NOYES
Director of Public Works
Enc.
88 89
COUNTY OF LOS ANGELES DEPARTMENT OF PUBLIC WORKS
STATE AUDIT REPORT - PHOTO RED LIGHT PROGRAM
JULY 2002
CHAPTER 1 RECOMMENDATIONS
1. Conduct more rigorous oversight of vendors by making periodic visits to review their
operations and develop business rules for vendors to follow when screening violations.
Response: We agree. The County of Los Angeles Department of Public Works will conduct
oversight visits periodically to ensure adequate oversight of vendor operations. Additionally,
Public Works will formalize the existing business rules for screening and processing violations
in writing.
2. Establish specific time periods for the destruction of confidential information relating to
unenforced red light violations.
Response: We agree. Public Works will incorporate appropriate time periods for the destruc-
tion of confidential information relating to photo red light violations as part of the formal busi-
ness rules for screening and processing violations.
3. Reconcile citations authorized and approved for enforcement are mailed out as citations.
Response: We agree with the intent of this recommendation. We will evaluate whether addi-
tional controls are needed to ensure only authorized and approved violations are mailed. Public
Works will work with the California Highway Patrol for any necessary changes.
4. To respect the privacy of motorists whose photographs are taken by red light cameras,
local governments should strengthen the language within their contracts with vendors
to include explicit wording to protect the confidentiality of photographs and information
obtained from the DMV database.
Response: We agree. Public Works will incorporate language to strengthen the contract on
confidentiality of photographs and information obtained from the DMV. We anticipate complet-
ing a competitive solicitation and entering into a new agreement for red light camera services in
Fiscal Year 2003. In the interim, we will incorporate confidentiality requirements as part of our
formal business rules.
90 91
5. Before installing red light cameras, local governments should first consider whether the
engineering measures, such as improving signal light visibility or using warning signs to
alert motorists of an upcoming traffic signal, would improve traffic safety in addressing
red light violations.
Response: We agree. In fact, as part of the current photo red light program implementation,
Public Works considered these measures prior to installing red light cameras.
6. To focus on traffic safety and avoid overlooking high-accident locations that are State-
owned when considering where to place red light cameras, local governments should
diligently pursue the required Caltrans permitting process, even though it may cause
some delays to their programs.
Response: We agree. Public Works internally established criteria to select locations suitable
for placing photo red light cameras. These criteria included red light running accidents, law
enforcement input, and other factors. The Caltrans permitting process was not considered in
the selection process.
7. To help maintain the integrity and accuracy of their systems, local governments should
conduct periodic inspections of red light camera intersections and consider contract-
ing with an independent engineering firm to conduct the more technical reviews of the
camera settings and calibration of the system.
Response: We agree. Public Works performs routine inspections of all intersections within our
purview including all of the photo red light enforcement intersections. Public Works will consider
contracting with an independent engineering firm to review camera settings and calibration of
the system.
8. To avoid the risk of legal challenges local governments should petition Caltrans to clarify
its traffic manual to explain when local governments should use their posted speeds or
the results from speed survey to establish yellow light time intervals at the intersections
equipped with the red light cameras.
Response: Public Works is committed to adhering to all criteria established in Caltrans’ Traf-
fic Manual, which clearly stipulate requirements for setting yellow cycle intervals for signalized
intersections.
90 91
Blank page inserted for reproduction purposes only.
92 93
Agency’s comments provided as text only.
City of Oxnard
Police Department
Art Lopez, Police Chief
July 3, 2002
Elaine M. Howle, State Auditor
Bureau of State Audits
555 Capitol Mall, Suite 300
Sacramento, California 95814
Dear Ms. Howle,
The City of Oxnard has been utilizing “Photo Red Light” cameras since 1996. We have experienced
an overall reduction in accidents as a result of the camera enforcement at the identified locations.
The reduction of accidents at these intersections is the primary goal of this program. This is just
one tool that we at the Oxnard Police Department use to enforce traffic laws and improve traffic
conditions within the City.
We appreciate the input provided to us as a result of this audit process and have had numerous
discussions with your audit team. Some of the recommendations in this document have been
implemented already. We will be looking to improve our administrative controls of the photo red
light program. This will insure that the operation of the entire photo red light program is under our
control.
Sincerely,
(Signed by: Art Lopez)
Art Lopez
Chief of Police
92 93
Blank page inserted for reproduction purposes only.
94 95
Agency’s comments provided as text only.
City of Sacramento
Department of Police
900 8th Street
Sacramento, Ca 95814-2506
July 8, 2002
Elaine M. Howle*
State Auditor
Bureau of State Audits
555 Capitol Mall Suite 300
Sacramento, California 95814
Dear State Auditor Howle:
In response to draft audit report, entitled “Red Light Camera Programs: Although They Have Con-
tributed to a Reduction in Accidents, Operational Weaknesses Exist at the Local Level,” the follow-
ing requested revisions are forwarded from the Sacramento Police Department and the City of Sac-
ramento Traffic Engineering Department c/o Mr. Marty Hanneman. Please consider these materials
for inclusion or review in your final report on this matter.
Sincerely,
(Signed by: Arturo Venegas Jr.)
Arturo Venegas Jr.
Chief of Police
* California State Auditor’s comments begin on page 99.
94 95
The requested revisions from the Sacramento Police Department are as follows:
1.) Page 21 “Elements of Oversight” The table reflects that Sacramento has no controls to prevent
vendor from sending out unauthorized citations. We dispute this assertion and offer the following
controls as proof:
1
• All citations require an officers signature for acceptance and date entry by the court.
Without a visible signature and badge number, the citation is immediately rejected and
returned to agency.
• Officers assigned to the Red Light Camera program log by citation number, every
approved citation and maintain records of approved citations.
• Vendor is notified by mail of all rejected citations and certificate of mailing for rejected
citations is retained by police department.
• Preparation for court trials requires officers to review original acceptance records.
Unauthorized citations would be detected and addressed when contested by violator.
2.) On page 28, paragraph #2, the auditors take issue with our vendor keeping data for unenforced
citations for three years, “without indicating why such a long retention period is necessary.”
2
• We have previously advised the auditor’s staff that pursuant to page #8 of our contract,
our vendor is required to archive such materials. This was done at the recommendation
of our City Attorney to ensure compliance with Government Code sections 34090 and
Sacramento City Council Resolution #76-181.
3.) On page #32 on the table row #10 “Safety of Police During Traffic Enforcement” was not
3
checked for the City of Sacramento.
• On at least one interview, Sgt. Poerio advised auditor’s staff that this criteria was con-
sidered when determining locations for camera placement.
96 97
The requested revisions from the City of Sacramento Traffic Engineering Department c/o Mr. Marty
Hanneman are as follows:
Existing
* Page 16- second paragraph: “Traffic safety appeared to be a significant factor in the choice for
most sites for red light cameras. However, we found that Sacramento placed cameras at some
intersections that did not appear to have a problem with running of red lights based on accident
statistics.”
Revised:
* Page 16- second paragraph: “Traffic safety was the primary factor in the choice for most
4
sites for red light cameras. Additionally, Sacramento placed some cameras based on video
surveys of recorded red light violations.”
Existing
* Page 34- second paragraph: “According to a one-day video survey conducted by Sacramento’s
vendor, these two intersections had a high number of red light violations.”
Proposed
5
* Page 34- second paragraph: “According to a one-day video survey conducted by Sacra-
mento’s vendor, all three intersections had a high number of red light violations.”
Existing
* Page 36- first paragraph: “ Sacramento used all-red clearance intervals on some but not all of their
red light camera locations.”
Proposed
4
* Page 36- first paragraph: “ Based on engineering judgement, Sacramento used all-red
clearance intervals on some of their red light camera locations.”
Existing
* Page 47-second paragraph: “ In fact, an appeal of a red light citation regarding Sacramento’s
placement of warning signs at major entrances resulted in a December 1999 ruling by a traffic court
commissioner that the city failed to install warning signs in full compliance with the law.”
Proposed
4
* Page 47- second paragraph: “ In fact, an appeal of a red light camera citation regarding
Sacramento’s placement of warning signs at major entrances resulted in a December 1999
ruling by a pro-tem traffic court commissioner that the city had failed to install warning
signs in full compliance with the law.”
Existing
*Page 54- Table 5: “Using the 85th percentile per the speed survey” Sacramento- 12/15.”
96 97
Proposed
*Page 54- Table 5: “ Using the 85th percentile per the speed survey” Sacramento- 12/15.”
6
Footnote: Two locations did not have cameras, the other was for nine days.
Existing
*Page 60- first paragraph: “ Before installing red light cameras, local governments should first con-
sider whether the engineering measures, such as improving signal visibility or using warning signs
to alert motorists of an upcoming traffic signal, would improve traffic safety and be more effective in
addressing red light violations.”
Proposed
4
* Page 60- first paragraph: “ Before installing red light cameras, local governments should
first consider whether the engineering measures, such as improving signal visibility, signal
timing or using warning signs to alert motorists of an upcoming traffic signal, would
improve traffic safety and be more effective in addressing red light violations.”
98 99
COMMENTS
California State Auditor’s Comments
on the Response From the City
of Sacramento
To provide clarity and perspective, we are commenting
on the City of Sacramento’s (Sacramento) response to our
audit report. The numbers below correspond to the numbers
we placed in the margins of Sacramento’s response.
1
Although Sacramento believes it has controls in place,
the controls it describes rely on other entities to perform
its responsibilities or fall short of those controls needed
to detect if the vendor issues unauthorized citations. For
example, Sacramento indicates that the courts will reject any
citation without a badge number and signature. Sacramento
is relying on the courts to properly perform this verification,
but it cannot force the courts to do so or dictate the quality of
this verification. Instead, Sacramento should independently
verify that its vendor does not issue unauthorized citations by
reconciling its log of authorized citations with those citations
that the vendor issues. Until such a reconciliation is put in
place, Sacramento cannot be certain that its vendor only issues
authorized citations.
2
We disagree with the city’s interpretation of the Government
Code. Our legal counsel advises that unenforced citations do
not appear to rise to the level of official city records because
the vendor has deemed them as unusable and they have never
become enforceable citations. Therefore, our legal counsel
concludes that it is unlikely that a court would find unenforced
citations are official city records within the meaning of
Section 34090 of the Government Code. As noted on page 22 of
the report, these unenforced citations constitute approximately
77 percent of all photographs taken by red light cameras. Thus,
under Sacramento’s current philosophy, it is allowing the vendor
to retain a significant amount of confidential information about
motorists—including their photographs and possibly their names
and addresses obtained from the Department of Motor Vehicles’
database—without having a legitimate business use for this
confidential information. When this type of information is
retained by the vendor without a legitimate reason, there is a
heightened risk it could be misused.
98 99
3
We need to clarify a point regarding Table 2 shown on page 26 of
the report. The purpose of this table is to show the factors that
the local governments considered in selecting intersections
for red light camera enforcement. As noted in the “Source,” we
prepared this table relying solely on internal reports and data
provided to us by the local governments. None of the planning
documents that Sacramento provided to us indicated that the
safety of police during traffic enforcement was one of the criteria
it used during the selection process.
4
We considered the city’s suggested change but chose not to
make it because we believe our report is accurate as written.
5
We modified a sentence on page 27 of the report to reflect
that the one-day video survey conducted by Sacramento’s
vendor showed that all three intersections had a high number
of red light violations.
6
Sacramento is attempting to obscure the fact that the three
intersections in question are part of its red light camera
program—which rotates 10 cameras among 16 camera
housings—and that cameras could have been rotated to
those intersections at any time. It is irrelevant whether or not
the intersections held cameras on the date that Sacramento
was required to comply with the California Department of
Transportation time intervals for yellow lights. What is relevant
is whether the yellow light intervals at all intersections in
Sacramento’s red light camera program complied with the new
yellow light timing law as of January 1, 2002.
100 101
Agency’s comments provided as text only.
The City of San Diego
Office of the Chief of Police
1401 Broadway
San Diego, CA 92101-5729
July 9, 2002
Elaine M. Howle*
State Auditor
Bureau of State Audits
555 Capitol Mall, Suite 300
Sacramento, CA 95814
Dear Ms. Howle:
In 1998, the City of San Diego implemented a pilot Red Light Photo Enforcement Program to
address the problem of red light violators and the resulting collisions. The goal of the program has
always been and remains public safety. The system in place has proven to be reliable and effective
in reducing both red light violations as well as collisions.
I have reviewed a copy of your audit and applaud the significant efforts taken by the state. I agree
with almost all of the recommendations put forward. In fact, most of the recommendations identi-
fied by your audit have already been identified by our department and are ready to be implemented
should the program be reinstated. However, with respect to the audit, there is one area that I feel
needs clarification. Your audit indicated that the contract between the City of San Diego and its
1
vendor does not have any specific provisions protecting the confidentiality of the records, giving
the impression that no safeguards exist. Although not specifically covered within the provisions
of the contract, the confidentiality of all records is specifically protected through additional written
agreements between the vendor and the Department of Motor Vehicles. State law also protects the
information gathered and forbids the dissemination of such information for any purpose other than
that authorized by statute.
As Chief of Police, traffic safety remains one of my top priorities for the City of San Diego. I con-
tinue to believe that a properly operated photo enforcement program will greatly benefit the citizens
of San Diego by making its streets and intersections considerably safer.
Sincerely,
(Signed by: John Welter for)
David Bejarano
Chief of Police
* California State Auditor’s comment appears on page 103.
100 101
Blank page inserted for reproduction purposes only.
102 103
COMMENT
California State Auditor’s Comment
on the Response From the City
of San Diego
To provide clarity and perspective, we are commenting on
the City of San Diego’s (San Diego) response to our audit
report. The number below corresponds to the number we
placed in the margin of San Diego’s response.
1
In response to another local government’s concern, we clarified
pages 37 to 38 of the report to add the following wording
regarding vendors’ access to the Department of Motor Vehicles’
(DMV) database: According to their agreements with the DMV,
for vendors to access motorists’ personal data, they must be
authorized by the local governments to apply for access through
the DMV. The DMV requires the vendor to take steps necessary to
ensure the confidentiality of the DMV information they receive.
However, it is the local governments’ responsibility to ensure
that their vendors maintain the confidentiality of the information
they have access to.
102 103
Blank page inserted for reproduction purposes only.
104 105
Agency’s comments provided as text only.
Department of Parking & Traffic
Traffic Engineering Division
City and County of San Francisco
25 Van Ness Ave., Suite 345
San Francisco, CA 94102
July 9, 2002
Response to State Auditor’s Report on
Red Light Photo Enforcement Programs
Ms. Elaine M. Howle
Bureau of State Audits
555 Capitol Mall, Suite 300
Sacramento, CA 95814
Dear Ms. Howle:
Please find attached our response to the recommendations made in the State Auditor’s draft report
on Red Light Camera Programs. We thank you for the opportunity to respond. Please call Britt
Thesen at 415-252-3291 if you have any further questions.
Very Truly Yours,
(Signed by: Bond M. Yee)
Bond M. Yee
Deputy Director and City Traffic Engineer
104 105
INTRODUCTION
On behalf of the City and County of San Francisco, we appreciate this opportunity to respond
to statements made in the State Auditor’s Report on Red Light Camera Programs. Thank you
for highlighting the many positive components of San Francisco’s Program, and also bringing
increased attention to areas where we may be able to improve our Program.
As the first Red Light Photo Enforcement Program in California, we have striven to create a positive
reputation for photo enforcement and are always looking for possible improvements to our program.
We believe we are not only in compliance with state laws, but that we have reduced injuries and
saved lives through our Program. The City takes red light running seriously and works in many
ways to address this issue. For example, the Department of Parking and Traffic (DPT) and the
Police Department have worked together to heavily enforce “No Front Plate” violations to promote
the effectiveness of the Red Light Photo Enforcement Program.
COMMENTS:
Below is our response to the draft report’s recommendations at the end of Chapters 1 and 2.
“CONDUCT MORE RIGOROUS OVERSIGHT OF VENDORS BY MAKING PERIODIC VISITS TO
REVIEW THEIR OPERATIONS”
Each project manager, and other key DPT staff working on the San Francisco Red Light Photo
Enforcement Program, have made visits to the offices of the contractor to oversee their work. Our
inspections addressed all of the concerns mentioned in the draft report, such as their procedure for
processing violations, security facilities, the handling of confidential data and compliance with the
contract. These visits were typically documented in internal weekly reports, which we do not retain.
If we had found any problems in our visits, we would have documented them in correspondence to
our vendor and retained those records, per our record retention policy. We never found any prob-
lems, however. In addition, we have held the monthly team meetings at the vendor’s facility. The
team, with representatives from the Police Department, City Attorney’s Office, the Court, Public
Works and the Health Department, has also visited the vendor’s facilities to review their process.
As you have pointed out in the draft report, DPT has maintained regular communications, including
monthly meetings and nearly daily phone calls and e-mails with the vendor. We do this in order to
stress the contractual obligations, remain abreast of problems that might arise and provide guid-
ance and oversight in this unique program.
We believe that our current procedures address your concerns, but to provide even more rigorous
oversight, we will conduct all future monthly team meetings at the vendor’s facilities to increase the
opportunity for inspection.
106 107
“ESTABLISH SPECIFIC TIME PERIODS FOR THE DESTRUCTION OF CONFIDENTIAL INFOR-
MATION RELATING TO UNENFORCED RED LIGHT VIOLATIONS”
Our contract specifies that at the end of the contract, the vendor is to return all products of the con-
tract (such as confidential records) to the City and County of San Francisco. This complies with our
departmental record retention policy.
For those records not resulting in issued notices to appear, it is the vendor’s current practice to
retain only the film and destroy all other data related to non-issued violations. The film for non-
issued violations is retained because the negatives for issued violations are interlaced on the same
roll of film as the non-issued violations, and it would be difficult to splice the film to separate the
issued from the non-issued violations. The vendor does not save any other information specific to
non-issued violations. Per your recommendations, DPT will formalize this practice by instructing the
vendor to follow this procedure through a memorandum and through contract amendment. DPT will
also begin work to modify the department’s record retention policy to create special categories for
all red light photo enforcement documents and records.
“RECONCILE CITATIONS AUTHORIZED AND APPROVED WITH THOSE THE VENDOR MAILS
AND PROMPTLY FOLLOW UP ON ANY DIFFERENCES SO THAT ONLY VIOLATIONS AUTHO-
RIZED AND APPROVED FOR ENFORCEMENT ARE MAILED OUT AS CITATIONS”
From the beginning of our program, we have had a system in place to ensure that only authorized
citations were mailed out. The process initially was that the issuing officer rejected notices to
appear by marking a diagonal line through the entire length of the notice to appear with the same
pen used to sign approved violations. The mailed unauthorized notice mentioned in the draft report
was sent out due to human error, when the rejection line was overlooked in the mailing process. As
stated in the draft report, the Police Department reviewed fifteen months of records and determined
that this was the only unauthorized or unapproved notice that had been issued during that period.
We have already begun to work toward an improved system where the Police Department more
emphatically indicates which violations are to be issued or not. To ensure that unauthorized notices
to appear are not mailed, the Police immediately substituted a large rubber “void” stamp for the pen
line rejection process.
Additionally, we are working with the Court to provide an additional layer of citation inspection as
you mentioned in the draft report. In the interim, the Police will perform a manual audit to reconcile
the authorized citations with those mailed out every two months, similar to that done on the fifteen
months of records recently.
“TO RESPECT PRIVACY OF MOTORISTS WHOSE PHOTOS ARE TAKEN BY RED LIGHT CAM-
ERAS, LOCAL GOVERNMENTS SHOULD STRENGTHEN THE LANGUAGE WITHIN THEIR
CONTRACTS TO INCLUDE EXPLICIT WORDING TO PROTECT THE CONFIDENTIAL INFORMA-
TION OBTAINED FROM THE DMV DATABASE”
106 107
While San Francisco has specific contract provisions with respect to confidentiality, the City did
not explicitly tell the vendor that DMV records are confidential because we felt that would have
been redundant. DMV, in its agreement with users, already requires this. However, based on your
recommendation, we will remind the contractor of the confidentiality of DMV records through both a
memorandum and contract amendment.
“TO HELP MAINTAIN THE INTEGRITY AND ACCURACY OF THEIR SYSTEMS, LOCAL GOV-
ERNMENTS SHOULD CONDUCT PERIODIC INSPECTIONS OF RED LIGHT CAMERA INTER-
SECTIONS AND CONSIDER CONTRACTING WITH AN INDEPENDENT ENGINEERING FIRM
TO CONDUCT THE MORE TECHNICAL REVIEWS OF THE CAMERA SETTINGS AND CALIBRA-
TION OF THE SYSTEM”
We understand that your comment regarding site inspection relates to (1) equipment not working
properly and (2) the vendor’s willful manipulation of the equipment.
With our current practice, we are confident a camera will be used for enforcement only when the
camera is working properly. The intersection equipment was installed per city-approved plans and
was installed under city supervision with an engineer on site fully documenting the work preformed.
We have done additional inspections at selected sites and found no discrepancies. City crews
maintain the equipment (except cameras) at these locations. If any part of the system fails, the
camera will not take photos. To ensure camera systems are functioning properly, diagnostic tests
are performed and documented each time film is collected, at least three times a week, which
becomes part of the evidence package for contested cases and is reviewed by the Police Depart-
ment on a case by case basis. In January 2002, DPT verified the loop locations at all intersections
to ensure that the locations of the loops matched the drawings, and also verified the pitch inputs
at several locations and found no problems. We will consider additional measures to review the
camera installations in light of our financial and staffing resources.
We are comfortable that the vendor could not change key system elements that would result in
falsified violations at an intersection without our knowledge. The vendor is only able to modify
one camera setting to generate increased violations, the pitch setting. The pitch setting tells the
computer the distance between the loops in order to computer the speed of a vehicle. Any modi-
fication to this setting would change the apparent speed of a vehicle. Our program, unlike some
other cities, does not use the speed of the vehicle to determine if there was a violation or not. Our
system takes two photos of each violator, one showing the violator behind the stop bar when the
light is red and one showing the violator in the intersection. The first photo verifies that the violator
was behind the stop bar when the light turned red, and the second photo verifies that the viola-
tor ran the red light. Thus, the speed of the vehicle is inconsequential to determining if a viola-
tion occurs. The only reason that speed is considered is to set a threshold speed, a speed below
which we do not enforce violations. Although we verified the pitch inputs at several intersections as
recently as January 2002, we will check the pitch settings at all sites based on your recommenda-
tions.
108 109
“TO ALLOW FOR BETTER ACCOUNABILITY OVER RED LIGHT CAMERA PROGRAMS AND
TO ENSURE THAT VENDORS ARE PAID APPROPRIATELY, LOCAL GOVERNMENTS SHOULD
BETTER TRACK THEIR REVENUES AND EXPENDITURES RELATED TO THEIR PROGRAMS.”
We provided the best information available for tracking our expenditures. The Police Department
bases its expenditures on the salary paid to employees working on the Red Light Photo Enforce-
ment Program and the percent of their time spent on the Program. Based on your recommenda-
tions, the Police Department will look into setting up an accounting procedure that tracks specifi-
cally how much time is spent on the Program.
“TO AVOID THE RISK OF LEGAL CHALLENGES LOCAL GOVERNMENTS SHOULD PETITION
CALTRANS TO CLARIFY ITS TRAFFIC MANUAL TO EXPLAIN WHEN LOCAL GOVERNMENTS
SHOULD USE EITHER POSTED SPEEDS OR THE RESULTS FROM A SPEED SURVEY TO
ESTABLISH YELLOW LIGHT TIME INTERVALS AT INTERSECTIONS EQUIPPED WITH RED
LIGHT CAMERAS”
The City is in compliance with state law, and would consider modifying its signal timing upon guid-
ance from Caltrans. We will seek confirmation from Caltrans regarding our current practice to
satisfy your recommendation.
CONCLUSION
Again, we believe that we are not only in compliance with state laws, but that we have reduced
injuries and saved lives through our Program. We thank you for the opportunity to respond to your
comments.
108 109
cc: Members of the Legislature
Office of the Lieutenant Governor
Milton Marks Commission on California State
Government Organization and Economy
Department of Finance
Attorney General
State Controller
State Treasurer
Legislative Analyst
Senate Office of Research
California Research Bureau
Capitol Press
110