摘要
为利用左转导向线提升交叉口车流运行安全和效率,分析了左转车辆从进口道至出口道的车道选择行为和行驶轨迹特点。根据随机效用理论建立了左转车辆出口车道选择模型,采用圆曲线和平曲线构建了左转车辆行驶轨迹模型,并提出两种左转导向线线型和3种左转车流引导方式。搭建交通仿真模型,对6种设计方案进行比选,分析了车型比例对引导效果的影响。结果发现:车辆所处进口车道、自身车型、转弯角度、同车道前车车型均显著影响左转车辆的出口车道选择行为;平曲线和圆曲线均适用于规则和不规则交叉口;设置平曲线引导左转车辆运行不仅可规范车流运行秩序而且可提升车流运行性能;为平衡通行效率和停车次数,不宜设置过多的导向线;这些结论不受车型比例影响。在城市道路交叉口,建议使用平曲线对左转车流设置导向线。当左转车道不止一条时,建议至少设置两条左转导向线。
To enhance the safety and efficiency of traffic flow operations at an intersection using left-turning guiding markings,the lane selection behaviors and vehicle trajectory characteristics of left-turning vehicles from an approach to an exit are analyzed.According to the random utility theory,the exit lane selection models for left-turning vehicles are formulated.Using the circular and horizontal curves,the vehicle trajectory models for left-turning vehicles are described.Two kinds of left-turning guiding markings and three types of guiding modes for left-turning traffic flow are proposed.Traffic flow simulation models are constructed,six design scenarios are compared,and the impacts of the percentages of vehicle types on the guiding effects are analyzed.The outcomes reveal that:the approach lane,self-type,turning angle and the type of the preceding vehicle in the same lane for the target vehicle significantly impact on the exit lane selection behaviors of left-turning vehicles;the circular and horizontal curves are both suitable for regular and irregular intersections;the settings of the horizontal curves for guiding left-turning vehicles can not only standardize the order of traffic flow operations but also improve the performances of traffic flow operations;it is not suitable to install redundant guiding markings in order to balance traffic efficiency and the number of stops;these conclusions are not impacted by the percentages of vehicle types.At intersections on urban roads,it is suggested that the horizontal curves should be used to install the guiding markings for left-turning traffic flow.When the number of left-turning lanes is more than one,it is recommended that two left-turning guiding markings should be installed at least.
作者
姚荣涵
祁文彦
郑刘杰
曲大义
YAO Rong-han;QI Wen-yan;ZHENG Liu-jie;QU Da-yi(School of Transportation and Logistics,Dalian University of Technology,Dalian 116024,China;School of Mechanical&Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2021年第5期1651-1663,共13页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51578111,51678320)
中央高校基本科研业务费项目(DUT20JC40).
关键词
城市道路
左转导向线
车道选择行为
车辆行驶轨迹
交通仿真
urban road
left-turning guiding markings
lane selection behavior
vehicle trajectory
traffic simulation
