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Highways for LIFE

Arrow Sequential Dynamic Curve Warning System (Traffic and Parking Control Company (TAPCO))

Horizontal Curves make up a small percentage of total road miles, yet account for one-quarter of all highway fatalities. The majority of crashes on curves involve lane departures. The Sequential Dynamic Curve Warning System consists of a series of solar-powered, LED-enhanced BlinkerSigns (a Curve Warning BlinkerSign and an array of Chevron BlinkerSigns) 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 field study will evaluate the effectiveness of the technology in reducing vehicle speeds and in reducing the frequency and/or the severity of curve-related crashes. Participating State DOT's include Missouri, Texas, Washington, Wisconsin, and Colorado. Estimated completion date: December 2013

Publications

Presentations

Flyer

Project Contact:

Omar Smadi 
Center for Transportation Research and Education
515.294.7110
Email: smadi@iastate.edu

More Information

Events

Contact

Julie Zirlin
Highways for LIFE
202-366-9105
julie.zirlin@dot.gov

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Updated: 09/03/2014
 

FHWA
United States Department of Transportation - Federal Highway Administration