信号交叉口借道左转设计方法研究  

The Design Method of Contraflow Left-turn Lane at Signalized Intersection

作　　者：赵展轮 汤雅杰 ZHAO Zhanlun;TANG Yajie(Wuhan Municipal Engineering Design and Research Institute,Wuhan 430000,China)

机构地区：[1]武汉市政工程设计研究院有限责任公司,武汉430000

出　　处：《交通与运输》2024年第1期12-16,共5页Traffic & Transportation

摘　　要：借道左转作为一种提高交叉口通行能力的交通管理措施,应用广泛。为了使借道左转的使用效果最优,总结借道左转的适用条件和实际运行的4个阶段,提出通过确定左转预信号相位和借道左转车道长度的方法,进行借道左转方案设计。首先,以单位时间借道左转的车辆数为评价标准,分析车道长度变化对借道左转实施效果的影响;其次,归纳出不同参数间的数学关系,得出最优借道左转车道长度与其他变量的转换方法,并推导出合适的左转预信号相位方案;最后,通过VISSIM软件仿真模型进行验证,证明设计方法的有效性。As a traffic management measure to improve the traffic capacity of intersections,contraflow left-turn lane has been continuously applied.In order to maximize the effectiveness of contraflow left-turn lane,the applicable conditions of contraflow left-turn lane and the four stages of vehicles in the process of contraflow left-turn are summarized,the method of designing the scheme of contraflow left-turn by determining the pre-signal phase and the length of contraflow left-turn lane is proposed.Firstly,the impact of lane length changes on the implementation of contraflow left-turn lane is analyzed based on the number of vehicles turning left on borrowed lanes per unit time as the evaluation criteria.Secondly,the calculation method of the optimal length of contraflow left-turn lane and an appropriate left turn pre signal phase scheme are got,by summarizing the mathematical relationships between different parameters.Finally,the design method is proved to be effective by using VISSIM simulation model to verify.

关 键 词：借道左转 左转预信号相位 车道长度 交叉口 

分 类 号：U491[交通运输工程—交通运输规划与管理]