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

  • Building the case for photo enforcement
    October 26, 2016
    As red light enforcement is returning to some intersections and being shut down at others, new evidence has been released backing the safety campaigners, reports Jon Masters. In 2014, 709 Americans were killed in red-light-running crashes and an estimated 126,000 were injured according to the Insurance Institute for Highway Safety (IIHS).
  • Driving forward cooperative intersection safety applications
    July 24, 2012
    Gregory Davis, FHWA, John Harding, NHTSA, and Mike Schagrin, ITS Joint Program Office (RITA) chart the course for cooperative intersection safety applications being pursued as part of the IntelliDrive programme. Crashes at intersections accounted for 8,703 highway fatalities in the US in 2008. Research and development is moving forward on IntelliDriveSM safety applications designed to help drivers avoid intersection accidents. These new safety systems could substantially drive down the highway death and inj
  • SwRI sponsors ITS America with $1,000 student essay competition
    February 14, 2018
    Southwest Research Institute (SwRI) is inviting U.S. students to take part in an essay competition to share their visions for the future of transportation with a $1,000 (£720) prize and a trip to ITS America 2018, in Detroit, from the 4-7 June. It is aimed at providing students an opportunity to apply their knowledge in a thought-provoking manner. The topic, ‘How do you envision disruptive consumer technology will affect transportation systems over the next 10 years?’ is open to transportation, engineering
  • Laser Technology latest sensors
    May 21, 2012
    Laser Technology’s third-generation S and T Series laser sensors offer the ability to profile vehicles, measure speed, count, and measure the time between vehicles all in one operation. This information can be used for real-time traffic management and trend analysis.