摘要
针对高速公路施工作业区的追尾风险及其突出影响因素识别问题开展了研究。首先,采集和分析了处于高速公路半幅封闭施工区和单向超车道封闭施工区合流段和施工区段的车型、车速、车头时距等基于车辆个体的交通参数数据,然后引入了避免追尾碰撞减速率(aD)的概念并提出了基于aD的追尾风险度计算方法,进而归纳总结了追尾风险的影响因素并构建了4个用于描述追尾风险度与影响因素之间关系的模型。基于关系模型提出了应用灵敏度分析识别突出影响因素的方法。最后,针对典型半幅封闭施工作业区及单向超车道封闭施工作业区的合流区和施工区段,应用上述方法进行了案例分析,验证了方法的可行性和可用性。
This paper focused on analyzing the rear-end collision risk in work zone on freeway and identifying the prominent influencing factors. First, the traffic data of vehicles through the merging area and working area of the closed one-way work zone and closed passing-lane work zone were collected and analyzed. These data include vehicle type, speed, time headway and other traffic parameters which can characterize each individual vehicle. Second, the concept of deceleration rate to avoid crash （aD ） was introduced, and a methodology to calculate rear-end collision risk based on aD was presented. Furthermore, the possible factors that will cause the rear-end collision risk were summarized, and 4 models to describe the relation between rear-end collision risk and influencing factors were calibrated. Based on these models, a sensitivity analysis methodology to identify the over-representative causal factors is put forward. Lastly, a case study is provided to verify the applicability and feasibility of the methodology, based on the merging area and work zone of the typical closed one-way work zone and closed passing lane work zone.
出处
《公路交通科技》
CAS
CSCD
北大核心
2012年第12期133-138,共6页
Journal of Highway and Transportation Research and Development
基金
黑龙江省交通运输厅科技项目(2011-2012)
