Optimizing the guiding sign system to improve drivers’ lane-changing behavior at freeway exit ramp

IF 2.4 3区 工程技术 Q3 TRANSPORTATION Journal of Transportation Safety & Security Pub Date : 2022-12-13 DOI:10.1080/19439962.2022.2153953
Wang Xiang, Y. He, Qunjie Peng, X. Li, Qingwan Xue, Guiqiu Xu
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引用次数: 1

Abstract

Abstract A high incidence of traffic accidents is often observed in freeway exit ramp areas. Slowing down, wandering, and changing lanes suddenly and continually in a short interval near the exit ramp are important reasons for accidents. Helping drivers start changing lanes sooner and more efficiently in freeway exit ramp areas is a feasible solution to vehicle interweaving. This paper aims to optimize the current guiding sign system and improve drivers’ lane-changing behavior before the exit ramp. Three guiding sign optimization measures (sign symbols, ground signs and voice prompts) had been considered before five guiding sign plans were made for driving simulation experiments: original sign (OS) plan, new type sign (NTS) plan, ground guiding sign (GOS) plan, voice prompt (VOS) plan, and voice-ground sign (VGOS) plan. The decisions, reactions, and operation processes of 43 Chinese drivers were compared to confirm the optimal guiding sign plan. The results showed that updating sign symbols, adding ground signs and voice prompts all contributed to the drivers’ shorter response time, earlier arrival at the lane-changing location, higher average speed and greater longitudinal distance of lane-changing. These findings can help freeway designers optimize the guiding sign system for freeway exit ramps.
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优化引导标志系统,改善高速公路出口匝道驾驶员的变道行为
摘要高速公路出口匝道区域是交通事故高发区。在出口匝道附近突然、连续、短时间内的减速、徘徊、变道是造成交通事故的重要原因。在高速公路出口匝道区域,帮助驾驶员更快、更有效地开始变道是解决车辆交织的可行方案。本文旨在优化现有的引导标志系统,提高驾驶员在出口匝道前的变道行为。在考虑了三种引导标志优化措施(标志符号、地面标志和语音提示)后,制定了五种引导标志方案进行驾驶模拟实验:原始标志(OS)方案、新型标志(NTS)方案、地面引导标志(GOS)方案、语音提示(VOS)方案、语音-地面标志(VGOS)方案。比较了43名中国司机的决策、反应和操作过程,以确定最佳的引导标志方案。结果表明,更新标志符号、增加地面标志和语音提示均有助于驾驶员响应时间更短、更早到达变道位置、平均速度更高、变道纵向距离更大。这些发现可以帮助高速公路设计师优化高速公路出口坡道的引导标志系统。
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CiteScore
6.00
自引率
15.40%
发文量
38
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