城市道路平交口左转专用车道类型及设计长度研究  

Research on the type and design length of left turn special lane at urban road level intersections

作　　者：胡功宏[1] 杨茂山 袁文波 HU Gonghong;YANG Maoshan;YUAN Wenbo(School of Civil Engineering and Architecture,Anhui University of Science&Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《交通科学与工程》2024年第4期129-135,共7页Journal of Transport Science and Engineering

基　　金：安徽省住房城乡建设厅科学技术计划项目(2015YF-12);安徽理工大学2022年大学生创新创业训练计划项目(S202210361058)。

摘　　要：为了解决城市道路平面交叉口左转车流引起的交通拥堵,提高交叉口的通行能力和安全水平,以十字形交叉口左转专用车道为研究对象,总结了城市道路平面交叉口左转专用车道的设计类型。针对当前国内平面交叉口左转车道设计长度不足的问题,选取典型交叉口对其高峰时段左转车流的转弯情况进行调查,根据运动学方程和车流波动理论推算向上游延伸的最长排队距离,从而提出左转专用车道长度的新算法。该算法考虑了车辆之间的传递性、延迟性、连续性特征,由其计算得到的设计长度可以减少左转车辆在交叉口引起的停车延误,提高交叉口的通行效率。To address the traffic congestion caused by left turn traffic flow at urban road intersections and to improve intersection capacity and safety,various design types of left-turn lanes were summarized.According to the current inadequacy in the design length of left-turn lanes at domestic intersections,typical intersections were selected to study the turning process of left-turn traffic during peak hours.By using kinematic equations and traffic flow fluctuation theory to estimate the maximum queue length extending upstream,a new algorithm for determining the length of left-turn lanes was proposed.This algorithm considers the transmission,delay,and continuity characteristics between vehicles.Using the design length calculated by the new algorithm can reduce parking delays caused by left-turning vehicles and enhance traffic efficiency at intersections.

关 键 词：左转车道 连续流 车流波动理论 减速长度 

分 类 号：U412.351[交通运输工程—道路与铁道工程]