信号交叉口Webster法延误计算修正模型  

Research on Webster's delay calculation modified Model of signalized intersection

作　　者：赵雨旸[1] 冯雨芹[1] 杨忠良[1] 

机构地区：[1]黑龙江工程学院汽车与交通工程学院,黑龙江哈尔滨150050

出　　处：《黑龙江工程学院学报》2010年第2期8-10,17,共4页Journal of Heilongjiang Institute of Technology

基　　金：黑龙江省自然科学基金项目(E200933)

摘　　要：信号配时方案设计是否合理最重要依据是对信号交叉口进行延误分析与定量计算来判定,目前国际上最经典的模型是英国的Webster算法,但因其自身的局限性,并不能用来计算拥挤条件下的延误。通过对哈尔滨市部分十字型信号交叉口与T型信号交叉口,采用点样本法进行的延误调查数据,对各交叉口应用Webster算法进行延误理论计算值与实测值的比较。经分析,Webster算法与实测值有较大出入。在此基础上,使用SPSS软件建立与哈尔滨市交通情况相适应的信号交叉口Webster法延误计算修正模型。Delay is the critical index which is used for evaluating the signal timing plan of intersection.At present,the most traditional delay model is Webster＇s model.But because of its inherent limitation,Webster＇s model couldn＇t be used to calculate the delay when traffic jam is present.The Webster＇s model is verified with the delay data obtained through using Point Samples delay algorithms and surveyed in some intersections in Harbin.The result shows that there is a large disparity between the Webster＇s models and the measured data.Thereby,the Webster＇s modified model is established with the measured data by SPSS software for calculating the delay of intersection which operates in different status.

关 键 词：信号交叉口 Webster延误模型 修正模型 SPSS软件 

分 类 号：U491[交通运输工程—交通运输规划与管理]