信号交叉口饱和流率及其影响因素研究  

Developing Adjustment Factors of Saturation Flow Rates at Signalized Intersections

作　　者：邵长桥[1] 荣建[1] 赵林[1] 

机构地区：[1]北京工业大学交通工程北京市重点实验室,北京100124

出　　处：《北京工业大学学报》2011年第10期1505-1510,共6页Journal of Beijing University of Technology

基　　金：国家科技支撑计划项目(2006BAJ18B03)

摘　　要：城市道路信号交叉口饱和流率及其影响因素是确定信号交叉口通行能力的基础.在大量数据调查的基础上,应用车头时距法给出了不同车辆类型的车辆折算系数;应用回归方法建立饱和流率与车道宽度关系模型,给出了车道宽度修正系数;研究了信号交叉口坡度对饱和流率的影响,得到了信号交叉口进口坡度与饱和流率的关系模型,给出了坡度修正系数;应用回归分析方法分析了右转车对直右共用车道饱和流率的影响,给出了右转车修正系数.The purpose of this paper is to study the saturation flow rate and its adjustment factors which is the basis of estimating the signalized intersection capacity.Based on the field data,the passenger car equivalences are calculated using the time headway method,which is adopted to analyze the effect of different type vehicles on the saturation flow rates.In order to determine the effect of lane width on the saturation flow rate,a regression model is developed and the adjustment factor for lane width is obtained.The approach grade effect on the saturation flow rate is studied and the adjustment factor for approach grade is provided.The multiple regression method is used to analyze the right-turn vehicle effect on the through-turn shared lane saturation flow rate and the adjustment factor for right turn is suggested.

关 键 词：信号交叉口 饱和流率 修正系数 车头时距 

分 类 号：U491[交通运输工程—交通运输规划与管理]