理想条件下路网临界车头间距的研究  

Research on Critical Headway under Ideal Condition

作　　者：陈春妹[1] 任福田[1] 荣建[1] 韩忠辉 

机构地区：[1]北京工业大学交通工程研究所,北京100022 [2]北京市政工程设计研究总院,北京100035

出　　处：《公路交通科技》2003年第1期118-121,共4页Journal of Highway and Transportation Research and Development

基　　金：北京市教育委员会科技发展计划项目 (P0 4 0 2 0 0 0 2 )

摘　　要：基于经典的跟驰理论 ,建立理想条件下车辆稳定跟驰行驶时的车头间距模型。并且利用高精度的车载GPS系统在北京市路网上采集的数据对该模型进行标定。同时根据最优化的相关理论确定出北京市路网达到其理想容量时车辆的临界行驶速度及临界车头间距 。On the basis of the classic car-following theory, under the ideal conditions, a headway model is put up in the paper. This model can depict the relationship between headway and speed, when each vehicle is car-following steadily. Then all of parameters in the model are demarcated by the data got by the geography position system (GPS for short) with precision up to 2cm installed in a car. Moreover, the model, according to the theory of optimization, reduces the critical speed and headway of Beijing road network. All of these make a basis for determining the ideal capacity of road network.

关 键 词：跟驰行驶 临界车头间距 临界行驶车速 车载GPS系统 模型 公路网 

分 类 号：U491[交通运输工程—交通运输规划与管理]