基于安全势场理论的高速公路交通事故下协同换道引导策略  

Cooperative lane change guidance strategy in freeway traffic accident area based on safety potential field theory

作　　者：姚佼[1] 杨承逸 杨媛媛 李俊杰 朱笑笑 YAO Jiao;YANG Chengyi;YANG Yuanyuan;LI Junjie;ZHU Xiaoxiao(Business School,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Chengtou Highway Investment(Group)Corporation,Shanghai 200335,China;Hozon New Energy Auto Co.,Ltd.,Shanghai 200062,China)

机构地区：[1]上海理工大学管理学院,上海200093 [2]上海城投公路投资(集团)有限公司,上海200335 [3]合众新能源汽车股份有限公司,上海200062

出　　处：《中国安全科学学报》2024年第7期71-82,共12页China Safety Science Journal

基　　金：教育部人文社会科学规划基金资助(22YJAZH131)。

摘　　要：为缓解交通事故对道路通行效率的影响,提高事故路段的通过能力,利用车路协同系统中车与车、车与路的实时信息交互,提出一种高速公路突发交通事故下基于安全势场理论的车辆协同换道引导策略。首先,针对单向双车道和多车道等不同车道下发生交通事故的多种场景,将协同换道的引导区域划分为事故保护区、引导过渡区、协同换道引导区和自由换道区4个区域,并确定换道引导阈值,以便更新车辆状态;然后,构建交通事故的安全势场,针对不同场景提出相应的车辆协同换道引导策略,并给出引导过程中车辆换道安全距离和最晚换道位置的计算方法;最后,基于城市交通仿真(SUMO)软件进行多种场景下的仿真验证。结果表明:在单向双车道场景下,当车辆协同引导率在75%时优化效果最明显;在多车道场景下,引导率在50%时的优化效果最明显;此外,通过对比分析发现,采用换道引导策略后,车辆通过事故路段的平均速度最高提升了6.3%,车辆延误最高减少了14.6%。In order to mitigate the impact of traffic accidents on the operation efficiency of freeways,and improve the throughput capacity of the accident area,based on real-time information via vehicle-to-vehicle and vehicle-to-road,a cooperative lane change guidance strategy in freeway traffic accident areas was proposed with the safety potential field theory.Firstly,in view of various traffic accidents in different lanes in two-lane or multi-lane traffic of one-way,the guidance area of collaborative lane change was divided into four areas:accident protection area,guidance transition area,collaborative lane change guidance area and free lane change area.The guidance threshold of lane change was determined to update vehicle status.Furthermore,the safety potential field of traffic accidents was established,and the corresponding guidance strategies of vehicle cooperative lane change were proposed according to different scenarios.The calculation methods of the safe distance for vehicle lane change and the latest lane change position were given.Finally,based on simulation of urban mobility(SUMO)software,the simulation results were verified in various scenarios.The results show that in the two-lane of one-way scenario,the optimization effect is most obvious when the vehicle cooperative guidance rate is at 75%.In the multi-lane of one-way scenario,the optimization effect is most obvious when the guidance rate is at 50%.Meanwhile,through comparative analysis,it is found that the average speed of vehicles passing through the accident section is increased by up to 6.3%and the maximum vehicle delay is reduced by 14.6%after adopting the lane change guidance strategy.

关 键 词：安全势场理论 高速公路 交通事故 协同换道 引导策略 

分 类 号：X951[环境科学与工程—安全科学] U412.36[交通运输工程—道路与铁道工程]