基于停车线前掉头的信号交叉口延误分析  

Delay Analysis of Signalized Intersection Based on Turningin Front of Parking Line

作　　者：孙东旭 韩萍[1] SUN Dongxu;HAN Ping(School of Traffic and Transportation Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028

出　　处：《综合运输》2024年第9期108-113,共6页China Transportation Review

摘　　要：为了探讨在停车线前掉头管控下,掉头车辆对交叉口对向直行交通流的饱和流率和车均延误的影响,建立不同掉头比例下,受影响的对向直行车道通行能力的修正系数;以临近饱和交叉口的延误模型为基础,建立采用停车线前掉头交叉口的延误模型。利用线性拟合确定出掉头交通量占对向直行的比例与对向直行车道饱和车头时距之间关系的数学模型,并应用VISSIM仿真平台对数学模型进行验证。根据算例分析,在停车线前掉头管控下的交叉口处,掉头交通量越多,对向直行车均延误增加和但“直行加掉头”的车均延误减少。In order to explore the influence of turning vehicles on the saturated flow rate and average vehicle delay of the opposite straight traffic flow at the intersection under the control of turning in front of the parking line,the correction coefficient of the affected opposite straight lane capacity under different turning ratios is established.Based on the delay model of the saturated intersection,the delay model of the turning intersection before the parking line is established.The linear fitting is used to determine the mathematical model of the relationship between the proportion of U-turn traffic volume in the opposite straight lane and the saturated headway of the opposite straight lane,and the VISSIM simulation platform is used to verify the mathematical model.According to the analysis of the example,at the intersection under the control of the turn-around before the parking line,the more the traffic volume of the turn-around,the increase of the average delay of the straight driving and the decrease of the average delay of the'straight driving plus turn-around'.

关 键 词：城市交通 交叉口延误模型 掉头车流 VISSIM仿真 修正系数 

分 类 号：U491.23[交通运输工程—交通运输规划与管理]