Traffic safety analysis at interchange exits using the surrogate measure of aggressive driving behavior and speed variation

IF 2.4 3区 工程技术 Q3 TRANSPORTATION Journal of Transportation Safety & Security Pub Date : 2022-07-18 DOI:10.1080/19439962.2022.2098439
Ying Yao, Xiaohua Zhao, Jia Li, Jianming Ma, Yunlong Zhang
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引用次数: 5

Abstract

Abstract Because of heavy traffic on urban expressways, the exits of expressway interchanges have become accident-prone sites. This study explores the impacts of various traffic control devices and road conditions on road safety at interchange exits based on driving behavior data from navigation software. The traffic order index (TOI) based on driving behavior and speed variation is used to evaluate road safety. The general safety characteristics and partitioned safety characteristics of interchange exit sections for different traffic control devices and under different road conditions were described, and a structural equation model (SEM) was constructed to observe the influences of the traffic control devices, road conditions, congestion degree, and time on road safety. The results show that traffic control devices (the number of warning signs, number of advance exit signs and complexity of diagrammatic guide signs) and road conditions (the number of lanes and merging conflicts within 500 m) have significant influences on the road safety of interchange exits. Road conditions have the greatest impact on the safety of interchange exits, followed by the congestion index, traffic control devices, and time. The results could help traffic management departments reconstruct or rehabilitate traffic control devices and enable reasonable road planning at interchange exits. The safety evaluation method for traffic control devices and road conditions based on driving behavior data collected from navigation software could be further used on other roads.
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基于攻击性驾驶行为和速度变化替代测度的立交出口交通安全分析
摘要由于城市高速公路交通繁忙,高速公路立交出口已成为交通事故多发地点。本研究基于导航软件的驾驶行为数据,探讨各种交通控制设备和道路状况对立交出口道路安全的影响。采用基于驾驶行为和速度变化的交通秩序指数(TOI)来评价道路安全。描述了不同交通控制装置和不同道路条件下立交出口路段的一般安全特性和分区安全特性,构建了结构方程模型(SEM),观察了交通控制装置、道路条件、拥堵程度和时间对道路安全的影响。研究结果表明,交通控制装置(警示标志数量、超前出口标志数量和图示引导标志复杂性)和道路条件(500 m内车道数量和合并冲突)对立交出口道路安全有显著影响。道路状况对立交出口安全的影响最大,其次是拥堵指数、交通控制设备和时间。研究结果可为交通管理部门改造或修复立交出口的交通管制设施提供参考,为立交出口道路的合理规划提供依据。基于导航软件采集的驾驶行为数据对交通控制装置和路况进行安全评价的方法,可进一步应用于其他道路。
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来源期刊
CiteScore
6.00
自引率
15.40%
发文量
38
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