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

  • ITS America concerned over use of 5GHz spectrum band
    February 28, 2013
    ITS America has raised con­cerns with the US Federal Communications Commission (FCC) over the potential use of the 5GHz band spec­trum by unlicensed national information infrastructure devices. It wants to protect the 5.9GHz band for dedicated short-range communications (DSRC)-based systems. These crucially underpin the development of connected vehicle (CV) technologies which could help slash the US’ annual tally of six million road traffic accidents and over 30,000 deaths. Within the US Department of Trans
  • EU project to make urban freight management more sustainable
    February 1, 2012
    Urban freight policies are becoming more common in European cities and regions. However, it is still difficult to evaluate and transfer the knowledge gained from the different city logistics measures implemented by local authorities. The SUGAR project aims to tackle this by establishing a systematic approach towards best practices identification and assessment, and by developing urban freight plans and actions.
  • Upcoming Flir traffic webinars
    October 30, 2015
    Flir Traficon Academy is organising several informative webinars for November, to provide participants with more about keeping traffic flowing. The vehicle and bicycle presence detector on 5 November at 7:00am, 1:30pm and 6:30pm will discuss the Flir ThermiCam/TrafiSense integrated thermal camera and detector that can be used for vehicle and bike detection, which uses thermal energy emitted from vehicles and bicyclists to detect their presence
  • Heading the right way with Caltrans
    October 27, 2020
    Wrong-way collisions are relatively rare – but they are often head-on and fatal. After recent studies, California DoT is reviewing its highway design standards