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Advance Warning of Stopped Traffic on Freeways: Current Practices and Field Studies of Queue Propagation Speeds. Research rept. Sep 01-Aug 02.
| 题名： | Advance Warning of Stopped Traffic on Freeways: Current Practices and Field Studies of Queue Propagation Speeds. Research rept. Sep 01-Aug 02. |
| 作者： | Wiles-P.B.; Cooner-S.A.; Walters-C.H.; Pultorak-E.J. |
| 关键词： | *Warning-systems; *Traffic-control; *Freeways-.;Traffic-safety; Traffic-flow; Traffic-congestion; Work-zones; Rear-end-collisions; Speed-indicators; Driver-aid-systems; Warning-devices; Urban-areas; Texas-; Collision-avoidance; Driver-behavior; Traffic-management; Detection-. |
| 摘要： | A major safety concern on freeways is traffic flowing at normal speed encountering unexpected slow or stopped traffic. Traffic can be queued due to recurrent congestion, work zones, or collisions and/or other incidents. Drivers encountering queues are often faced with rapidly changing conditions in terms of queue length, sight distance to the end-of-queue, terrain, and available warning devices for traffic control. The rear-end collision is the most common type of multi-vehicle freeway collision, often due to slow/stopped traffic on the main lanes. This report summarizes the first year of this effort, which was to conduct the literature review, to determine current practices for advance warning for stopped traffic, to observe field locations with traffic stopped due to various congestion conditions, and to determine advance warning techniques applicable to Texas. |
| 报告类型： | 科技报告 |
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