Photo Enforcement Studies

Ticket Cameras

Virginia Accidents Increased After Ticket Camera Installation
The Virginia Transportation Research Council released a report expanding upon earlier research into the safety effects of red light cameras in Virginia. It showed an overall increase in crashes after cameras were installed.

A Long Term Study of Red-Light Cameras and Accidents
The conclusion of this Australian study was that RLCs are not an effective countermeasure and that they can increase the number of rear end crashes.

AAA Michigan Study Shows Cameras Aren't Needed
AAA Michigan partnered with a number of communities to improve intersection safety. Their inexpensive structural changes resulted in a 47-percent decrease in crashes and a 50-percent decrease in injuries.

Red-Light-Running Behaviour at Red-Light Camera and Control Intersections
Monash University study showing red-light cameras have no effect on reducing violations.

A Detailed Investigation Of Crash Risk Reduction Resulting From Red-Light Cameras In Small Urban Areas
A study prepared by the North Carolina A&T State University found that red-light cameras increased the number of accidents at intersections.

A Response to Unfounded Criticisms of Burkey and Obeng (2004) Made by the IIHS
The North Carolina A&T University study above was criticized by the Insurance Institute for Highway Safety (IIHS). This is a rebuttal of IIHS's claims by the authors of the North Carolina study.

Impact of Red-Light Camera Enforcement on Crash Experience - A Synthesis of Highway Practice
A recent study by the Transportation Research Board (TRB) illustrates the lack of evidence supporting the effectiveness of red-light cameras.

Evaluation of the Red-Light-Camera-Enforcement Pilot Project
This report from Ontario, Canada's Ministry of Transportation's concluded that jurisdictions using photo enforcement experienced an overall increase in property damage and fatal and injury rear-end collisions.

Development of Guidelines for Identifying and Treating Locations with a Red-Light-Running Problem
This Texas Transportation Institute study highlights the efficacy of increasing yellow-light times. An extra second yielded a 40-percent reduction in collisions.

Effect of Yellow-Interval Timing on Red-Light-Violation Frequency at Urban Intersections
This study shows that an increase of 0.5 to 1.5 seconds in yellow-light duration will decrease the frequency of red-light running by at least 50 percent.

Virginia DOT Study on Red-Light Cameras
The Virginia Department of Transportation released a biased report in favor of the cameras that still documented an increase in accidents, including more rear-end collisions and injuries.

Critique of IIHS 2001 Oxnard Study
California Senate Committee on Privacy critiqued the Oxnard study. The results show that IIHS's study is flawed on many levels.

The Red-Light-Running Crisis: Is It Intentional?
This report was prepared by former House Majority Leader Dick Armey's staff. It looks at the problems of red-light cameras and how to really deal with traffic-light violations.

Yellow-Light-Timing Myths
Proponents of red light cameras claim that increasing the yellow light time is not a solution because motorists will adjust to the lengthened yellow light time. These studies prove the proponents are wrong.

Driver Behavior Characteristics at Urban Signalized Intersections
This study shows that providing adequate all-red clearance intervals can significantly impact intersection safety by reducing the probability of occurrence of right angle crashes, even if drivers run the red light.

Misleading San Diego Report
Although the report clearly credits the most significant reduction in violations to an increase in yellow time -- a fact buried on page 78 -- the report nonetheless credits these benefits to the red-light cameras everywhere else in the report, especially in the summary.

Yellow Light Duration Impact On Driver Response
This report from the Institute of Traffic Engineers Journal examines how drivers react to differing yellow light durations.

Greg Mauz Reports
A compilation of reports on the issue of red-light cameras and safety by Greg Mauz.

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