路侧公交专用车道下右转出口上游公交车头时距分布特征  

Distribution Characteristics of Bus Headway Upstream of Right-turn Exit under Road-side Bus Lane Mode

作　　者：姚红云[1] 梁丽娟 YAO Hong-yun;LIANG Li-juan(School of Transportation,Chongqing Jiao Tong University,Chongqing 400074,Chian)

机构地区：[1]重庆交通大学交通运输学院

出　　处：《科学技术与工程》2019年第26期364-368,共5页Science Technology and Engineering

摘　　要：为了描述路侧公交专用车道下右转出口上游公交车的车头时距分布特征,考虑公交停靠站对公交车头时距分布的影响,将研究对象分为两类。基于实测数据,对公交车头时距进行非线性回归拟合,并通过卡方检验对各组数据进行拟合优度检验,从定性和定量角度对公交车头时距分布进行分析。最后,基于可插间隙理论,建立了右转车辆在交织区延长后的通行能力模型;结合两种类型下的公交车头时距分布模型,分别建立了交织区长度与公交车流量和右转车流量的关系模型。研究结果表明:第Ⅰ类公交车头时距服从负指数分布,第Ⅱ类公交车头时距服从移位负指数分布。In order to describe distribution characteristics of bus headway upstream of right-turn exit under roadside bus lane mode,considering the influence of bus stops on the bus headway distribution,the research objects were divided into two categories. Based on the measured data,the bus headway was fitted non-linearly,and the goodness-of-fit of model was verified through a Chi-square test against 4 sets of observed data. Finally,based on the pluggable gap theory,the traffic capacity model of right-turning vehicles with extended weaving length was established,and the relationship model between weaving length and bus flow and right-turning traffic flow was established respectively by combining the bus headway distribution model under two types. The results show that the bus headway of type I obeys the negative exponential distribution,and that of type Ⅱ obeys the shift negative exponential distribution.

关 键 词：城市交通 公交车头时距 卡方检验 间隙理论 交织区长度 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]