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

  • High-speed WIM moves onto the main highway
    May 24, 2016
    High-speed weigh-in-motion is starting to make its mark on both sides of the Atlantic. As a transit country the Czech Republic experiences a large number of overloaded vehicles, which greatly increase highway maintenance costs. This prompted its Transport Ministry to trial an extension of the capabilities of the existing truck tolling system to allow the dynamic high-speed weighing of cargo vehicles. In effect the tolling enforcement gantries become weigh-in-motion (WIM) locations.
    Read More
  • City Safety reduces low speed accidents on Volvo’s XC60 and S60
    May 29, 2013
    It was four years ago that Volvo introduced its City Safety collision avoidance system which is designed to reduce the number and severity of low-speed accidents to the US market. However, a study in America by the Highway Loss Data Institute (HLDI) has shown that the results may not be as good as initially indicated by an earlier report. According to Volvo, statistics show that 75% of reported collisions occur at speeds of up to 30km/h (18.6mph) typically in urban traffic and in slow-moving traffic queues
    Read More
  • Report calls for extension of point to point cameras
    November 18, 2014
    A report on the role of speed in vehicle crashes in New South Wales (NSW), Australia, makes a number of recommendations to isolate speed as a causal factor in crash rates by improving data collection and conducting specific research to identify the triggers for speeding, particularly in rural and regional areas. The report, by the Joint Standing Committee on Road Safety (Staysafe) also looks at the appropriateness of speed limits and approaches adopted in other jurisdictions and the adequacy of existing
    Read More
  • Proposed system to take guesswork out of choosing a freeway lane
    March 17, 2014
    A fledgling advanced lane management assist system can take the guesswork out of selecting the right lane on a congested freeway, as its inventor Robert Gordon explains. As drivers we’ve all done it and control room staff see it all the time – motorists on congested freeways switching into what they perceive is a faster lane, only to come to a halt a few moments later and watch vehicles in the other lanes continue to move past. Now, by re-analysing readily available data in an advanced lane management as
    Read More

Highlighted Content