Study shows curve warning systems ‘reduce crashes’

A study by the US Federal Highway Administration’s Highways for Life has found a small but consistent reductions in mean and 85 percentile speeds on dangerous bends through the use of Tapco’s BlinkerChevron dynamic curve warning and guidance system (DCWGS) instead of static warning signs. The system's detects oncoming vehicles up to 90m (300ft) from the curve and will trigger the flashing LEDs on the signs if the vehicle’s speed exceed a predetermined level to warn the driver of the dangerous curves with e
February 24, 2016 Read time: 2 mins
RSSA study by the US Federal Highway Administration’s Highways for Life has found a small but consistent reductions in mean and 85 percentile speeds on dangerous bends through the use of 989 Tapco’s BlinkerChevron dynamic curve warning and guidance system (DCWGS) instead of static warning signs.

The system's detects oncoming vehicles up to 90m (300ft) from the curve and will trigger the flashing LEDs on the signs if the vehicle’s speed exceed a predetermined level to warn the driver of the dangerous curves with each chevron flashing sequentially.

Set up to examine improving safety performance on rural horizontal curves, the study concluded that ‘overall, the sign appeared to be effective in reducing speed and crashes’. Analysis showed a reduction in vehicles exceeding the speed limit or advisory speed limit by 5, 10, 15, or 20 mph, and particularly in the higher ranges.

Air Quality & Weather Systems

For more information on companies in this article

Related Content

  • Adaptive control reduces travel time, cuts congestion
    January 20, 2012
    Situated in San Diego County, California, the growing city of San Marcos has seen its population increase by 53.5 per cent since the turn of the century. Although this dramatic population increase has spurred economic growth bringing new business, homes and opportunities to the city, it has also increased traffic congestion along its central corridor, San Marcos Boulevard. This became the most congested arterial in the city, and, by 2006, the second-most travelled corridor in San Diego County.
    Read More
  • The importance of going with the flow
    April 6, 2018
    Ensuring worker safety and up-to-date driver information is crucial to ensure that roadworks are not a source of danger and delay. Andrew Williams looks at a scheme on the A14 in Cambridgeshire, UK. In recent years, portable workzone ITS solutions have emerged as important tools in the management of major roadworks and system upgrade projects - and are viewed as an increasingly vital means of ensuring any ongoing traffic flow disruption is kept to a minimum. The technology forms a central component of an
    Read More
  • Traffex snapshot reveals enforcement advances
    July 24, 2017
    An indication of just how far beyond spot speed and red light the enforcement sector has progressed was evident in the range of new and improved equipment on display at the recent Traffex event in Birmingham. One of the key trends, particularly in the UK but also evident elsewhere, is the increase in average speed enforcement, according to RedSpeed’s managing director Robert Ryan, who predicts a big increase in installations this year. “The price point has reached a level authorities can afford,” he says, a
    Read More
  • Global ANPR market 2010-2014
    May 21, 2012
    Research and Markets has announced the addition of the "Global Automatic Number Plate Recognition Market 2010-2014" report to its offering. TechNavio's analysts forecast that the global ANPR market is expected to grow at a CAGR of 30 per cent and will reach US$579.8 million in 2014.
    Read More

Highlighted Content