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

  • Deaths of US pedestrians rise sharply, says GHSA report
    April 2, 2019
    Pedestrian deaths across the US have risen to their highest number in nearly 30 years. Many factors are responsible - including the rise and rise of SUVs - according to a worrying new GHSA report ore pedestrians died on US roads last year than in any year since 1990. The Governors Highway Safety Association (GHSA) suggests that 6,227 pedestrians were killed in 2018 – a 4% increase on 2017. Pedestrian deaths as a percentage of total motor vehicle crash deaths increased from 12% in 2008 to 16% in 2017, whi
  • UK drug-driving in the spotlight
    March 23, 2012
    A panel of scientists and academics is being established by the UK Department for Transport (DfT) to advise on the possible implementation of rules covering drug-driving, along the lines of existing drink-driving laws. MDMA, cocaine, opiates and cannabis are seen by the DfT as the primary drugs for consideration. The experts will examine whether such a law should be introduced, with elements such as possible legal limits to be looked into. If it is decided the move is technically feasible, with regard to pu
  • Research finds LED stop signs effect ‘similar to normal stop signs’
    February 5, 2014
    The results of a two-pronged investigation by researchers from the Minnesota Traffic Observatory at the US University of Minnesota on the safety related effects of flashing LED stop signs have just been released. They conducted two studies: a statistical study to compare the crash frequency after installation of a flashing LED stop signs at 15 intersections to a prediction of what that crash frequency would have been had the flashing LED stop signs not been installed; and a field study using video to exa
  • ITS World Congress preliminary programme now online
    June 16, 2015
    The preliminary programme of the 22nd ITS World Congress is now available online, with details of all sessions, speakers, social and associated events, as well as the 30-plus demonstr4ations which have been planned for the congress in Bordeaux.