高速公路交通事故影响区域交通流限速管控特征研究  

Study on the Characteristics of Regional Traffic Flow Rate Control in Expressway Traffic Accidents

作　　者：陈凯贤 曾俊伟[1] 钱勇生[1] 广晓平[1] CHEN Kaixian;ZENG Junwei;QIAN Yongsheng;GUANG Xiaoping(School of Traffic and Transportation,Lanzhou Jiaotong Univer-sity,Lanzhou,Gansu 730070,China)

机构地区：[1]兰州交通大学交通运输学院,甘肃兰州730070

出　　处：《公路工程》2018年第2期91-95,共5页Highway Engineering

基　　金：国家自然科学基金西部项目(51468034);甘肃省高等学校基本科研业务费项目(214148);甘肃省高等学校科研项目(2015A-051)

摘　　要：基于NaSch模型的理论,考虑高速公路交通事故对车流的影响,建立事故影响区域交通流限速管控模型。通过对事故影响区域限速管控与非限速条件进行分析,分别在车流为自由流和同步流两种情况下,统计道路的平均速度、事故区域的换道次数、事故区域车辆碰撞次数,并对以上数据进行模拟分析。表明在自由流和同步流两种情况下,对事故影响区域进行限速管控,会明显降低事故车道和非事故车道在事故缓冲区域内的碰撞次数,这也是保证行车安全的重要措施。Based on the theory of NaSch model,this paper considers the influence of highway traffic accident on traffic flow,and establishes the accident control model of regional traffic flow.Based on the analysis of the speed control and non-speed limit in the area affected by the accident,the average speed of the statistical road,the number of times of the road in the accident area,the accident area vehicle The number of collisions,and the above data for simulation analysis.The study shows that in the case of free flow and synchronous flow,the speed control of the accident affected area will obviously reduce the number of accidents in the accident buffer area and the accidental driving area in the accident buffer area,which is also an important measure to ensure the safety of traffic.

关 键 词：交通事故 元胞自动机 交通流 限速管控 

分 类 号：U491.4[交通运输工程—交通运输规划与管理]