交叉口借道左转方案的交通安全仿真研究  

Research on Traffic Safety of Contraflow Left-turn Lane Design in Intersections

作　　者：张柯宇 贾志绚 范英飞 ZHANG Ke-yu;JIA Zhi-xuan;FAN Ying-fei(School of Traffic and Logistics,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学交通与物流学院,太原030024

出　　处：《太原科技大学学报》2022年第6期566-570,共5页Journal of Taiyuan University of Science and Technology

基　　金：山西省重点研发计划(2019074);山西省高等学校教学改革创新(J2020212);山西省研究生优秀创新(2019SY499)。

摘　　要：为了提高道路通行能力,实现对交叉口时空资源的有效利用,提出借道左转的控制方式。分析了借道左转适用条件,以借道左转预信号设置的点位、启亮时间和绿灯时间为参数构建了量化模型。以实际交叉口为例,进行借道左转的方案设计,通过VISSIM仿真,对比设置借道左转方案前后交叉口的冲突风险占比和延误指标,结果显示设置借道左转后,总冲突风险降低,在保证安全的前提下提高了左转的通行效率,有效的缓解了交通拥堵。In order to improve the traffic capacity and achieve the effective utilization of the spatiotemporal resources at the intersection, contraflow left-turn lane design is proposed.The applicable conditions of contraflow left-turn lane are analyzed, and the quantitative model with the parameters of point position, starting time and green time is constructed.Meanwhile, a before-after study is implemented with the software of VISSIM in order to compare the conflict risk proportion and delay indicators of the actual intersection which designed with the contraflow left-turn lane.The simulation results indicate that the total conflict risk and the delay are reduced with contraflow left-turn lane design, which improves the traffic efficiency of left turn on the premise of ensuring safety, and relieves traffic congestion effectively.

关 键 词：交叉口 左转交通流 借道左转 预信号 安全仿真 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]