The embodiment of the invention discloses a traffic risk analysis method for a non-signalized intersection, and relates to the technical field of traffic safety evaluation.The method comprises the steps that a static evaluation index system is constructed based on accident cause data, and the static safety degree of the intersection is calculated through a fuzzy evaluation method; dividing flow direction conflict types based on flow direction conflict characteristics of the non-signalized intersection, and designing a corresponding SSM to construct a dynamic evaluation index system; solving a conflict possibility level through a dynamic evaluation index, and calculating the dynamic safety degree of the intersection in combination with a conflict severity level; and a comprehensive risk assessment model is constructed based on a clustering method, so that the comprehensive traffic risk level of the intersection can be determined. For the non-signalized intersection, the slow variable and the fast variable are uniformly incorporated into the evaluation method, and the index system and the evaluation model are respectively constructed, so that the problems that a traditional method depends on accidents and discontinuous evaluation are effectively solved, and an effective means is provided for road risk investigation.
本发明实施例公开了一种用于无信号交叉口的交通风险分析方法,涉及交通安全评价技术领域,方法包括:基于事故致因数据构建静态评价指标体系,并利用模糊评价方法计算交叉口静态安全度;基于无信号交叉口流向冲突特征划分流向冲突类型,并设计对应SSM以构建动态评价指标体系;通过动态评价指标求得冲突可能性级别,再结合冲突严重性级别计算交叉口动态安全度;基于聚类方法构建综合风险评估模型,即可确定交叉口的综合交通风险等级。本发明针对无信号交叉口,将慢变量和快变量统一纳入评价方法中,并各自构建指标体系和评估模型,有效解决了传统方法依赖事故、间断评价等问题,为道路风险排查提供了有效手段。
Traffic risk analysis method for non-signalized intersection
一种用于无信号交叉口的交通风险分析方法
2024-09-10
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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