紧急逃生坡道对降低山地高速公路碰撞伤害严重程度的影响——以中国为例

IF 2.4 3区 工程技术 Q3 TRANSPORTATION Journal of Transportation Safety & Security Pub Date : 2021-04-08 DOI:10.1080/19439962.2021.1909682
Li Li, Guangming Li, Dong Zhang, Rui Fang, Wenchen Yang
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引用次数: 4

摘要

摘要紧急逃生坡道是山区高速公路用于拦截失控车辆的基础设施。作为车辆乘员安全的最后一道防线,EERs在降低碰撞伤害严重程度方面的表现是道路安全利益相关者关注的问题。本研究基于一条安装了5个EERs的山地高速公路的碰撞记录,比较了EERs与其他路段的碰撞伤害严重程度,找出了两种情况下对伤害严重程度有显著影响的因素。利用随机参数有序概率模型的参数系数和边际效应的估计来推断EER在各种因素影响下的性能。结果证实了EERs在降低碰撞损伤严重程度方面的有效性。夜间、碰撞车辆侧翻状况、多车碰撞、路边基础设施设计或安装不当、驾驶员对当地驾驶情况不熟悉、碰撞车辆重量等因素会削弱EERs的保护功能。本文将研究结果与以往的研究结果进行了比较,并提出了一些建议,以提高山区高速公路的居民和财产保护的EER绩效。
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Effects of emergency escape ramps on crash injury severity reduction on mountain freeways: A case study in China
Abstract Emergency escape ramps (EERs) is an infrastructure of mountain freeways to stop runaway vehicles. As the last defence of vehicle occupants’ safety, the performance of EERs in reducing crash injury severity is a concern for stakeholders of road safety. Based on crash records collected on a mountain freeway equipped with five EERs, this study compared the injury severity of crashes on EERs and other road sections, and identified the factors that significantly influence injury severity in the two conditions. Estimations of the parameter coefficients and marginal effects of a random parameters ordered probit model were used to infer EER performance under the impacts of various factors. The results confirm the effectiveness of EERs on the reduction of crash injury severity. The protection function of EERs is weakened by nighttime, the rollover status of crashed vehicle, multi-vehicle collisions, improper design or installation of the roadside infrastructure, drivers’ unfamiliarity with local driving conditions, and crashed vehicle weight. The paper compares the findings with those of previous studies and proposes some recommendations to improve EER performance for occupant and property protection on mountain freeways.
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CiteScore
6.00
自引率
15.40%
发文量
38
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