交通事故中道路通行能力计算方法  

Calculation Method of Traffic Capacity in Traffic Accidents

作　　者：颜卓程 

机构地区：[1]电子科技大学微电子与固体电子学院,四川成都610054

出　　处：《无线电通信技术》2014年第5期82-85,共4页Radio Communications Technology

基　　金：国家自然科学基金资助项目(11101071);电子科技大学教改项目(Y03003023901002010;2013XJYSL026)

摘　　要：为准确计算交通事故中道路通行能力,在深入分析发生事故时道路状况的基础上,通过对道路通行能力的机理分析,提出了一种计算方法。针对事故发生位置对车道路宽进行变换处理,根据驾驶员反应时间等因素算出最小车头间距,推导出车速与车流密度关系、车道路宽与车速关系以及通行能力与车流量、车道数的关系。最后,使用Matlab数值模拟得到道路通行能力与车流密度的相图。结果表明,该相图能准确反映出交通事故对道路通行能力所造成的削弱影响。After analyzing in-depth the accidents based on road conditions, the calculation method of traffic capacity in trafficaccidents is put forward.The transformation processing is performed for the road width according to the location of accidents and theminimum front spacing is calculated according to the reaction time of driver in order to deduce the relation between driving speed andtraffic flow density, road width and driving speed, traffic capacity and vehicle flow rate as well as traffic capacity and driveway number.Finally,the phase diagram of road traffic capacity and traffic flow density is obtained through Matlab numerical simulation.The resultsshow that the phase diagram can exactly reflect the influence of traffic accident on road traffic capacity.

关 键 词：交通事故 公路 通行能力 车流密度 数值模拟 MATLAB 

分 类 号：U491.31[交通运输工程—交通运输规划与管理]