信号交叉口排队离散车头时距统计分析  

Queuing Vehicle Headway Statistic Analysis at Signalized Intersection

作　　者：邵长桥[1] 杜晓辉[1] 李光芹[1] 

机构地区：[1]北京工业大学,北京100022

出　　处：《公路交通科技》2003年第4期76-79,共4页Journal of Highway and Transportation Research and Development

基　　金：北京市自然科学基金项目 (80 31 0 0 2 );北京市科委项目 (交通流特征参数研究 )

摘　　要：信号交叉口排队离散车头时距分析 ,对确定交叉口的通行能力、计算损失时间和信号配时都有着重要的意义。本文通过对实测排队车头时距分析 ,得到了信号交叉口停车线前排队车头时距的一般特点和统计特性 ,特别是排队车头时距可用对数正态分布拟合 ,为进一步分析车辆在交叉口的运行特性奠定了基础。文中还得到了排在第 5个位置后的排队车头时距服从同一分布 ,建议饱和流率的测量从第The analysis of queuing vehicle headway at signalized intersection is important for determining the capacity, computing lose time and signal timing. By analysis of measured headway at signalized intersection , the general and statistic characteristics are obtained,especially the time headway can be fitted by log-normal distribution. This is useful to further learn the operation features of signalized intersection.It is concluded that the headway distribution follow the same pattern after the fifth vehicle in the queue and suggested that counting saturated flow from the No.sixth vehicle.

关 键 词：车头时距 对数正态分布 均值 方差 

分 类 号：U491.114[交通运输工程—交通运输规划与管理]