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原文传递 A Comprehensive Evaluation of Dynamic Speed Feedback Signs on Freeway Interchange Ramps
题名: A Comprehensive Evaluation of Dynamic Speed Feedback Signs on Freeway Interchange Ramps
正文语种: eng
作者: Shakir Mahmud;Timothy J. Gates
作者单位: Michigan State University;Michigan State University
摘要: Freeway interchange ramps are common horizontal curves that experience a significantly high number of crashes per lane miles compared to any other roadway segment. These ramps often include horizontal curves due to right-of-way constraints and other factors that require a significant reduction in speed to be safely negotiated. Drivers often fail to reduce their speed while transi-tioning from a high-speed freeway environment to the lower speed requirements of the ramp, leading to a crash. Nationwide, a total of 779 fatal crashes occurred on the freeway exit and entrance ramps in 2019.1 Most of the crashes on ramps are single-vehicle lane departure crashes where speeding-more specifically, transitioning from a higher speed to a lower speed-is a contributing factor. Therefore it is highly important to implement safety measures on freeway exit ramps that will help drivers to reduce speed and eventually improve safety.
出版年: 2023
期刊名称: ITE journal
卷: 93
期: 6
页码: 40-45
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