基于随机效用理论和安全距离的换道行为研究  

Research on Vehicle Lane-changing Behavior Based on the Random Utility Theory and Minimum Safe Spacing

作　　者：毛远思 罗霞[1] 何梦辰 MAO Yuansi;LUO Xia;HE Mengchen(College of Transportation and Logistics,Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]西南交通大学交通运输与物流学院,四川成都611756

出　　处：《综合运输》2023年第4期113-119,共7页China Transportation Review

摘　　要：换道对交通流的运行有重要影响,为探究车路协同环境下的换道行为,本文将换道决策过程分为车道决策和安全决策两个阶段,基于车路协同技术特点,提出了车路协同环境下综合考虑驾驶人车道选择特性和换道安全性的分层换道模型。模型的第一层为基于随机效用理论的车道决策Logit模型,第二层为基于最小安全距离的安全决策模型。然后,从路段视频中提取车辆实际行驶数据对模型进行参数标定和检验,利用元胞自动机对车路协同环境下的一般换道决策Logit模型和所建模型进行仿真。结果表明,较一般Logit模型,本文所建模型更能优化车辆自主性换道行为,提高路段通行效率和交通流稳定性。Lane-changing has a great impact on traffic flow.In order to explore the lane-changing behavior under the condition of Cooperative vehicle infrastructure system(CVIS),this paper divides the lane-changing decision process into two stages:lane decision and safety decision.Based on the technical characteristics of CVIS,a layered lane-changing model is proposed that comprehensively considers driver's lane selection characteristics and lane-changing safety.The first layer of this model is lane decision Logit model based on the random utility theory;the second layer is safety decision model based on the minimum safe spacing.Then,extract actual driving data from the road segment video to calibrate and verify the parameters of the model.And using cellular automata to simulate the general lane-changing decision Logit model and the proposed model under the condition of CVIS.The result shows that compared with general Logit model,the layered model can better optimize vehicle's autonomous lane-changing behavior,improve the traffic efficiency of road and stability of traffic flow.

关 键 词：车路协同 换道模型 随机效用理论 最小安全距离 元胞自动机 

分 类 号：U491[交通运输工程—交通运输规划与管理]