题名: |
Performance Analysis of Centerline and Shoulder Rumble Strips Installed in Combination in Washington State. |
作者: |
B., Manchas; D., Olson; M., Sujka |
关键词: |
Accident Reduction; Centerline Crossover Collisions; Centerline Rumble Strips(clrs); Centerline Warning Systems; Countermeasures; Crash Rates; Highway Design; Lane Departure; Road Shoulders; Rumble St |
摘要: |
WSDOT began installing rumble strips on undivided highways in 1999 as a countermeasure for roadway departure crashes. Installations on the shoulders were intended to reduce run-off-the-road crashes, while centerline rumble strips targeted reductions in cross-centerline crashes. A March 2011 report detailed the performance of centerline rumble strips on Washington State highways. This study: Examines the combined effects of centerline and shoulder rumble strips; Details the performance of rumble strips on undivided highways in Washington State under a variety of conditions; Explores various traffic volumes, geometric conditions, lane and shoulder widths, and driver contributing circumstances; and Compares various installation scenarios with shoulder and centerline rumble strip installation at different times, as well as simultaneous installation. |
报告类型: |
科技报告 |