交通运输研究2025，Vol.11Issue(3)：23-33,11.DOI:10.16503/j.cnki.2095-9931.2025.03.003
混合交通流下高速公路虚拟应急车道管控策略
Virtual Emergency Lane Control Strategy for Expressways under Mixed Traffic Flow Conditions
摘要
Abstract
In order to enhance the flexibility of emergency lanes on expressways,improve lane resources utilization,and adapt to the mixed traffic flow containing Connected and Automated Vehicles(CAV),a vir-tual emergency lane control strategy is proposed in the study.Firstly,the study establishes a dynamic right lane opening model dominated by the accident location based on the dynamic right-of-way allocation mech-anism of emergency vehicles priority.Then,it adopts cellular automata to construct a mixed traffic flow simulation model containing emergency vehicles.Finally,different traffic densities and propor-tions of CAV are set for the actual four-lane expressway through the MATLAB simulation platform,to verify the feasibility and validity of the strategy.The simulation results show that compared with the traditional fixed emergency lane strategy,this strategy can significantly improve the traffic capacity.As trucks account for 20%of the total vehicles,and CAV account for 30%of the cars(including HV),the peak system traffic flow can reach 8 902.8 pcu/h,which is 30.2%higher than the traditional strate-gy;the proportion of congestion is reduced by 10%～27%in the range of low to medium density(0～80 veh/km).In addition,under different CAV ratios,the traffic capacity of this strategy is superior to tra-ditional scheme,with an average system capacity improvement of about 32%and a maximum im-provement of 36.6%.The results show that the strategy has a significant effect in improving the high-way capacity and congestion resistance.关键词
智能交通/虚拟应急车道/元胞自动机/高速公路/管控策略Key words
intelligent transportation/virtual emergency lane/cellular automata/expressway/con-trol strategy分类
交通工程引用本文复制引用
史玉婷,干宏程,王一帆..混合交通流下高速公路虚拟应急车道管控策略[J].交通运输研究,2025,11(3):23-33,11.基金项目
国家自然科学基金项目(71871143) （71871143）
上海市科技创新行动计划项目(22dz1203400 （）
22dz1203405) （）
