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

  • Colorado DOT and partners to unveil self-driving work zone vehicle
    August 10, 2017
    US manufacturer of TMA (truck mounted attenuator) trucks Royal Truck & Equipment is to unveil the Colorado Department of Transportation (CDOT) autonomous attenuator truck, along with partners at Colas UK, and Micro Systems. This work zone vehicle has been designed to revolutionise safety for roadway maintenance crews. Usually positioned behind road construction crews in order to protect workers from the travelling public, the Autonomous Impact Protection Vehicle (AIPV) is a self-driving TMA truck that incre
  • Should it be end of the road for right-turns on red?
    April 10, 2024
    Banning right-hand turns after stopping for a red light is gaining momentum in the US. But the debate continues about whether it will result in fewer incidents between vehicles and alternative mobility users. David Arminas reports
  • Next generation traffic data collection
    March 5, 2014
    Swedish company Sensebit will use Intertraffic Amsterdam 2014 to launch the next generation traffic data collection - the Sensebit Traffic Measurement System (STMS). It offers remotely managed, accurate and cost efficient collection of traffic data using vehicle detectors, like the STMS WD-300, in multiple configurations, installed in the road surface that collect and upload traffic data via the internet. The traffic data can either be accessed through a web interface or automatically transferred to othe
  • US lawmakers support Kapsch TrafficCom in Neology dispute
    May 2, 2019
    US lawmakers have supported Kapsch TrafficCom in its patent dispute with Neology. The US Court of Appeals for the Federal Circuit has upheld an earlier International Trade Commission (ITC) ruling, which said that Kapsch did not violate any of Neology’s patent claims by importing electronic tolling products using the ISO/IEC 18000-6C communications protocol (6C Standard). The Federal Circuit decision confirms the right of industry suppliers to market, sell and distribute 6C Standard tolling tags and re