考虑驾驶行为的小汽车-卡车混合交通流特性  

Characteristics of car-truck mixed traffic flow considering driving behavior

作　　者：张怡雯 钱勇生[1] 曾俊伟[1] 魏谞婷 ZHANG Yiwen;QIAN Yongsheng;ZENG Junwei;WEI Xuting(School of Transportation,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学交通运输学院,兰州730070

出　　处：《交通科技与经济》2024年第6期1-8,共8页Technology & Economy in Areas of Communications

基　　金：国家自然科学基金西部项目(72361017,52362047,71861024);甘肃省重点研发计划项目(21YF5GA052);甘肃省自然科学基金项目(18JR3RA119)。

摘　　要：为探讨考虑驾驶行为因素的小汽车与卡车混合系统的交通流特性,运用元胞自动机建立相应的跟车模型,通过MATLAB软件仿真分析不同条件下混合流的基本特性及拥堵情况。结果表明:若卡车混入率增大,车辆平均车速和相应交通流量都会降低;冒险系数β越大,即当驾驶员行为更激进时,道路交通流的平均车速和流量就越大,车辆的通行程度得到提升,此外,冒险型与保守型的驾驶员比例越高,平均速度也越大。关于交通拥堵状况,不同密度下是否加入卡车对拥堵的影响也不同,低密度下卡车的添加会减轻拥堵,而高密度下则会加重拥堵,并且在高密度条件时的纯小汽车和卡车加入两种情况下,冒险系数越大,越会加重道路拥堵。To explore the traffic flow characteristics of cars and trucks considering the driving behaviors,a cellular automaton model was used to establish a corresponding car following model,and the basic characteristics and congestion situation of the mixed flow under different conditions were analyzed through MATLAB language to program.Conclusions are as follows:if the percentage of trucks increases,the average vehicle speed and traffic flow will decrease;the higher the driving-style coefficient or the more aggressive the driver’s behavior,the greater the average speed and flow of road traffic,and at the same time,the road traffic in the system is improved,in addition,the average speed is also higher when the ratio of adventurous and conservative drivers is larger.About traffic congestion,different density whether to add a truck for the influence of congestion is different,at low density,the addition of trucks will reduce the congestion,while at high density,congestion will be aggravated,and under high density conditions,whether adding a truck or not,the advance of the driving-style coefficient will increase the road congestion.

关 键 词：驾驶行为 混合交通流 元胞自动机 冒险系数 安全距离 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]