First product to undergo Technology Partnerships

June 25, 2012 Read time: 2 mins

Tapco's sequential dynamic curve warning system will be evaluated for two years in several US states

A Technology Partnerships study has been announced to evaluate the safety benefits of a solar-powered traffic signage system designed to minimise crashes on horizontal curves in the US. Part of the US 831 Federal Highway Administration Highways for Life initiative, evaluations will test the effectiveness of innovative road infrastructure safety technologies that are fully developed and market ready, but have had little use on US roads.

Although horizontal curves make up a small percentage of total road miles, they account for 25 per cent of all highway fatalities with the majority of crashes on curves involving lane departures. US company Traffic and Parking Control Company (989 TAPCO) has developed the sequential dynamic curve warning system which consists of a series of solar-powered, LED-enhanced flashing signs that are installed throughout a curve. Approaching vehicles, sensed by radar or other ITS device, trigger the controller that wirelessly activates the LED signs to flash sequentially through the curve to warn speeding drivers to slow down. The two-year Technology Partnerships field study will evaluate the effectiveness of the system in reducing vehicle speeds and in reducing the frequency and/or the severity of curve-related crashes. Participating State DOTs include Missouri, Texas, Washington, Wisconsin and Colorado.

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TAPCO

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

January 31, 2012

Intersection collision avoidance system trial

Although much of the emphasis of research into intersection management has tended to concentrate on the needs of urban locations, there remain specific issues pertaining to rural intersections which need to be addressed. Here, Rebecca Szymkowski and Greg Helgeson, Wisconsin DOT, Todd Szymkowski, University of Wisconsin-Madison, and Craig Shankwitz and Arvind Menon, University of Minnesota detail progress on an intersection collision avoidance system for more remote locations.

United States Highway 53 (US53) and Wisconsin State Highway 77 (STH 77) intersection

March 9, 2015

Putting a stop to intersection indecision

An ALERT installation awaiting actuation sign

October 22, 2014

Bespoke ITS is helping to reduced collisions on America’s rural roads

David Crawford cherrypicks conference and award highlights Almost 30% of all US citizens live in rural areas or very small communities, and 34 of the 50 states exceed this level in their own populations, with the proportions rising as high as 85%. And although rural routes carry only 35% of all traffic, the accidents that occur on them account for some 54% of all US road traffic accident deaths.