高速公路互通立交分流区车头时距分布  

Headway Distribution Characteristics of Diverging Area on Expressway Interchanges

作　　者：赵晓翠[1] 杨峰[1] 邓宝[1] 

机构地区：[1]交通运输部公路科学研究院,北京100191

出　　处：《公路交通科技》2012年第2期136-139,共4页Journal of Highway and Transportation Research and Development

基　　金：国家高速公路安全和服务技术开发与工程应用示范项目(2009BAG13A03)

摘　　要：针对国内多条高速公路互通立交分流区进行了详细的调研工作,利用NC200检测器获得了大量的调研数据。在理论模型分析的基础上,利用χ2检验技术对分流区多个断面的车头时距统计值进行了假设检验,验证了多个断面不同交通量下车头时距的分布规律。检验统计表明当高速公路互通立交分流区交通量分别为510、508、350、294、212、78 veh/h时,移位负指数分布可较好的反映车辆车头时距的分布规律,相关研究结论为进一步的科研和设计工作提供了重要的理论基础。A detailed site investigation to many domestic expressway interchange diverging areas was carried out, and a large number of research data was obtained by using NC200 detector. Based on model analysis, the X2 test technology was used to do the hypothesis test on the headway statistics of different diverging area sections, and the headway distribution of many sections in different traffic volumes was verified. Test and statistics show that when traffic volume in the expressway interchange diverging area is 510, 508, 350, 294, 212 and 78 veh/h respectively, the shifted-negative-exponential distribution can well reflect the vehicle＇s headway distribution, which provided an important theoretical basis for further relevant research and design work.

关 键 词：交通工程 车头时距 χ2检验 分流区 

分 类 号：U491.1[交通运输工程—交通运输规划与管理]