基于车流当量期望冲突量无信号交叉口安全风险分析研究  

Research on Risk of Un-signalized Intersection Based on Expected Traffic Conflict Unit

作　　者：袁黎[1] 刘汉龙[1] 

机构地区：[1]河海大学土木与交通学院,南京210098

出　　处：《武汉理工大学学报（交通科学与工程版）》2014年第4期757-762,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(批准号:51308192);中国博士后基金项目(批准号:20110491343)资助

摘　　要：在分析交通冲突特性的基础上,考虑交叉、合流与分流冲突发生的潜在概率、交通流量及车辆位置等因素,以期望值的观点,建立了各冲突类型的期望冲突量模型;由于不同类型的交通冲突对路口潜在威胁及严重性也不同,在分析各冲突类型易肇事的概率和肇事后严重程度的基础上,给出了3种冲突类型不同的权重值;并在期望冲突量和权重值辆指标的基础上,构建无信号交叉口车流当量期望冲突量,以一无信号交叉口为例,验证其实用性.First based on analyzing the characteristics of traffic conflict,relevant factors of conflicts are investigated,such as probability of conflicts,flow,and vehicle location,and the crossing,merging,and diverging conflicts models are setup based on expected values.Due to different types of traffic conflicts caused different potential treats and collision severities,the research estimate the weighted values of crossing,merging,and diverging conflicts through analyzing traffic conflict potential probability and collision severities based real accident data.Then,Expected traffic conflict unit model for un-signalized intersection is developed based expected traffic conflict and corresponding weighed values.Finally,a un-signalized intersection is applied to a case study for revealing the validity of the research.

关 键 词：无信号交叉口 车流当量期望冲突量 交通安全 冲突严重性 

分 类 号：U491.23[交通运输工程—交通运输规划与管理]