In a rural area of Virginia, a collision countermeasure system installed on a two-way stop-controlled intersection reduced vehicle speeds by 2.4 mi/hr, and increased the average projected time to collision from 2.5 to 3.5 seconds. Notes:See also:"Intersection Collision Warning System" (FHWA Publication No. FHWA-RD-99-103) Content type Benefit Date Posted 01/01/2003 Taxonomy (ARC-IT) Intersection Safety Warning and Collision Avoidance (VS13) Geolocation links Aden, Virginia, United States