Skip to main content

TTI study underscores safety benefits of red light cameras

New research claims that red light cameras help to reduce the number of crashes at intersections where they are installed. The study, although limited to Texas, is claimed to be one of the most extensive so far in the US, and researchers say the findings demonstrate that the automated enforcement method offers an effective means of preventing crash-related deaths and injuries. The 69-page report, - Evaluation of Photographic Traffic Signal Enforcement Systems in Texas - which is available at this link, is t
March 23, 2012 Read time: 2 mins
New research claims that red light cameras help to reduce the number of crashes at intersections where they are installed. The study, although limited to Texas, is claimed to be one of the most extensive so far in the US, and researchers say the findings demonstrate that the automated enforcement method offers an effective means of preventing crash-related deaths and injuries.

The 69-page report, - Evaluation of Photographic Traffic Signal Enforcement Systems in Texas - which is available at %$Linker: External 0 0 0 oLinkExternal this link Evaluation of Photographic Traffic Signal Enforcement Systems in Texas false http://tti.tamu.edu/wp/wp-content/uploads/2011/07/Evaluation_of_Photographic_Traffic_Signal_Enforcement_Systems_in_Texas.pdf false false%>, is the result of researchers examining more than 11,000 crash records at the 275 intersections statewide where cameras were in place, and comparing crash frequencies one, two and three years before and after installation of the cameras.

An overall reduction of 633 crashes recorded at those intersections represents an 11 per cent decline statewide. Red light-related crashes dropped by 25 per cent, and right-angle crashes (the most severe type) dropped by 32 per cent. The reductions were seen across the board on all types of roadways, including  business/primary roads, farm-to-market roads, interstate access roads, state highways and US highways.

In addition to assessing the cameras’ effectiveness according to roadway type, researchers also compared crash frequencies at different intervals before and after cameras were installed. The examination showed a 23 per cent drop from one year before to one year after cameras were put into use. The two- and three-year comparisons reflected reductions of 27 per cent and 21 per cent, respectively.

“These findings show clearly that red light cameras offer significant safety benefits,” says Troy Walden, the author of the TTI study. “Most important, they help prevent the most severe and deadly type of intersection crashes.”

According to US federal sources, red light running causes more than 100,000 crashes and 1,000 fatalities every year, and right-angle crashes account for 46 per cent of all intersection-related collisions.

Related Content

  • January 3, 2017
    ATS wants drivers to stop running red lights
    US traffic safety camera provider American Traffic Solutions (ATS) has compiled a video (link https://www.atsol.com/2016-worst-red-light-runners/) from its red light cameras in operation in the US and wants drivers to see the collection of red-light running crash videos which it says are too dangerous to ignore. According to independent research, red light cameras have a measurable impact on traffic safety; in 2016, the Insurance Institute for Highway Safety determined red-light cameras in 79 large US ci
  • November 28, 2012
    Canadian authorities convinced of enforcement safety benefits
    Cost-benefit analysis invariably finds highly in favour of speed and red light enforcement, particularly so in Edmonton in the Alberta province of Canada, where authorities need no convincing of the merits of road safety engineering. Justification of enforcement efforts on economic grounds has been reinforced this year, by a study of the costs and benefits of red light enforcement. New York-based economic research firm John Dunham & Associates carried out this latest analysis for American Traffic Solutions
  • October 17, 2017
    City of Greenville installs red-light safety camera program
    To tackle fatalities caused by red-light running, the city of Greenville, North Carolina, has implemented a red-light safety camera program that will issue a $100 (£75) fine to offenders, which it hopes will reduce both violations and collisions. A-red light running violation occurs when a motorist enters an intersection after the traffic signal has turned red, but this does not include drivers already in the intersection when the signal changes to red (drivers waiting to turn).
  • January 24, 2012
    Underinvestment in infrastructure threatens economic growth
    The 2011 Urban Mobility Report from the Texas Transportation Institute highlights the dangers of continued underinvestment in transportation infrastructure but also offers some hope in terms of possible solutions