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

  • Savings accrue from on-line from truck screening
    October 18, 2013
    An online truck pre-clearance system is allowing enforcement to be better targeted towards offending vehicles. Utah is the latest US State department of transportation (DOT) to deploy HELP (Heavy Vehicle Electronic License Plate) Inc’s new 360SmartView electronic truck screening and sorting system at vehicle inspection sites to speed up compliance checks. The initial locations will be at Perry on Interstate 15 (I-15), which were the first sites in the state to implement HELP’s PrePass transponder-based v
  • ATRI releases roll stability system analysis
    August 14, 2012
    The American Transportation Research Institute (ATRI) has released the industry's first major comparative analysis of roll stability systems based on carrier operational data. The institute’s analysed crash rates, crash costs, and technology costs for roll stability control (RSC) and electronic stability control (ESC) systems compared to vehicles without any roll stability systems technology. The research, based on data from over 135,000 heavy trucks, indicated that installation of RSC technology may resul
  • Transmax develops EVP safety system
    March 25, 2014
    A sophisticated system giving emergency vehicles priority at signalised junctions has been developed by specialist Australian ITS provider Transmax. The firm’s innovative Emergency Vehicle Priority (EVP) package switches traffic signals to green ahead of an emergency response vehicle, improving safety.
  • Italy to stage COMPASS finale
    November 29, 2013
    ITS Italy will host the final event of the European COMPASS (Optimised CO-Modal PASSenger Transport for reducing carbon emissions) project. The 25-month project examined how social, economical, environmental and technological changes will affect transport and derived the key challenges for future policy and planning. Its results will be delivered at the final conference on 13 November in Rome and will include recommendations on improving data collection in passenger transport. The draft programme c