United States Department of Transportation
i
Intersection Collision Warning System
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1999-04-01
[PDF-301.14 KB]
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Alternative Title:TechBrief : intersection collision warning system
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Abstract:Safety at unsignalized intersections is a major concern. Intersection collisions are one of the most common types of crash, and in the United States, they account for nearly 2 million accidents and 6,700 fatalities every year. However, a fully signalized intersection can sometimes be hard to justify in rural areas, due to the cost of installation, maintenance, and added delays to traffic on the major through streets. The Intersection Collision Warning System (ICWS) project studied the effectiveness of an innovative and potentially less expensive approach to improving safety in these situations. This approach consists of two types of traffic-actuated warning signs linked to pavement loops and a traffic signal controller. The purpose of the ICWS project was to enhance driver awareness of the traffic situation at the intersection by providing timely and easily understood warnings of vehicles entering the intersection.
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