混有网联车队的高速公路通行能力分析  

Analysis of Capacity for Mixed Traffic Flow with Connected Vehicle Platoon on Freeway

作　　者：常鑫[1] 李海舰 荣建[1] 赵晓华[1] 王益 CHANG Xin;LI Haijian;RONG Jian;ZHAO Xiaohua;WANG Yi(Beijing Key Laboratory of Traffic Engineering,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学交通工程北京市重点实验室,北京100124

出　　处：《华南理工大学学报（自然科学版）》2020年第4期142-148,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51608017);北京市自然科学基金资助项目(9202001)。

摘　　要：智能网联环境下车辆跟车间距减小,连续行驶的网联车辆可以组建为柔性车队,车队内车辆可以保持更小的车头间距行驶,进而有效提高道路通行能力。文中针对高速公路基本路段传统车辆和网联车辆混行交通流,提出了交通流稳态条件下4种可能的车辆跟驰特性及其空间分布概率,进而建立了高速公路基本路段的基本图模型和车辆换算系数(PCE)计算方法,并进行了网联车辆渗透率和车队规模等参数的敏感性分析。研究结果表明,网联车辆渗透率的提高和车队规模的增加有利于提升通行能力和减小车辆换算系数,且网联车辆渗透率越大正面影响愈明显。另外,当车队规模大于4后,车队规模的增加对通行能力的提升和换算系数的降低作用明显减弱。Under the context of intelligent network, vehicles can enact cooperatively at a small headway, and continuous connected vehicles will be in platoon configurations by information interaction of vehicle-to-vehicle or vehicle-to-infrastructure communication. Thus, the road capacity will be improved effectively. Considering the traffic flow randomly mixed with regular vehicles and connected vehicles, 4 types of car-following characteristics and its spatial distribution probability in heterogeneous traffic flow were analyzed. Then the fundamental diagram model and the passenger car equivalents(PCE) were obtained. And the sensitivity analyses on penetration rate of connected vehicle and platoon size were carried out. Research results show that the improvement of the penetration rate of the connected vehicles and the increase of the platoon scale will help enhance the traffic capacity and reduce the PCE. Moreover, the positive impacts will be more obvious with the increase of the penetration rate of the connected vehicles. When the vehicle platoon scale is larger than 4, its impact on the traffic capacity improvement and the PCE reduction will decrease significantly.

关 键 词：高速公路基本路段 混合交通流 网联车队 渗透率 车队规模 通行能力 

分 类 号：U491[交通运输工程—交通运输规划与管理]