基于通行效率的Y型合流车道信号设置依据研究  

Research on signal setting basis of Y-type merging lane based on traffic efficiency

作　　者：刘怡 张惠玲[1] 高继岗 张德凯 LIU Yi;ZHANG Huiling;GAO Jigang;ZHANG Dekai(College of Traffic and Transportation,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学交通运输学院,重庆400074

出　　处：《湘潭大学学报（自然科学版）》2022年第6期70-81,共12页Journal of Xiangtan University(Natural Science Edition)

基　　金：重庆市教委科学技术研究项目(KJQN201800727);山地城市交通系统与安全重庆市重点实验室开放基金(2018TSSMC03)。

摘　　要：为了完善Y型合流车道交通信号灯设置依据,从通行效率角度出发,对合流车道交通流参数进行了提取,建立了Y型合流车道通行效率模型.在此基础上对模型参数与各入口道流量的相关关系进行分析,分别用多元线性回归模型与幂函数模型对通行效率模型中的车流量、通行时间和平均运行速度进行了标定,将标定结果带入通行效率模型中对通行效率进行求解,通过计算无信号控制合流车道相对于信号控制合流车道的通行效率增长率,确定是否设置信号的流量阈值,最终得到了基于通行效率的临界流量曲线,作为Y型合流车道的信号设置依据.In order to improve the setting basis of traffic lights in Y-type merging lane,the traffic flow parameters of Y-type merging lane were extracted from the perspective of traffic efficiency,and the traffic efficiency model of Y-type merging lane was established.On this basis,the correlation between the model parameters and the flow of each entrance lane was analyzed.The multiple linear regression model and power function model were used to calibrate the traffic flow,passing time and average running speed in the traffic efficiency model,and the calibration results were brought into the traffic efficiency model to solve the traffic efficiency.The flow upper limit without signal control was determined by calculating the growth rate of traffic efficiency of unsignal-controlled merging lane relative to that of signal-controlled merging lane and the cratical volume curve based on traffic efficiency was finally obtained,as the signal setting basis of the Y-type merging lane.

关 键 词：Y型合流车道 信号设置依据 通行效率模型 临界流量 

分 类 号：U491.1[交通运输工程—交通运输规划与管理]