The invention relates to a non-signalized intersection traffic conflict identification and risk assessment system and method, and the method comprises the steps: extracting the world coordinates and the driving speed of a road user from the video data of a non-signalized intersection, so as to deduce a safety distance; according to the safety distance and the world coordinates of the road users, determining a conflict domain range, judging whether the two road users conflict or not, and if yes, judging whether the two road users conflict or not; if not, continuing to determine a conflict area, then sequentially calculating the distance between the tracks of the road users, constructing a conflict point set, obtaining a frame to which each conflict point in the conflict point set belongs, determining a conflict event record to calculate a PET value, and classifying the conflict severity by combining a preset threshold range to obtain a conflict severity evaluation result. Compared with the prior art, the traffic conflict at the non-signalized intersection can be accurately identified, and the conflict risk can be accurately evaluated according to the microscopic driving behavior of the conflict object.

    本发明涉及一种无信号交叉口交通冲突识别与风险评估系统及方法,该方法包括:从无信号交叉口的视频数据中提取道路使用者的世界坐标和行驶速度,以推演得到安全距离;根据安全距离以及道路使用者的世界坐标,确定冲突域范围,判断两个道路使用者之间是否发生冲突,若判断发生冲突,则继续确定冲突区域、之后依次计算道路使用者轨迹间距离、构建冲突点集合、获取冲突点集合中每个冲突点所属的帧、确定冲突事件记录,以计算得到PET值,再结合预设阈值范围,对冲突严重程度进行分类,得到冲突严重性评估结果。与现有技术相比,本发明能够对无信号交叉口交通冲突进行准确识别,同时实现根据冲突对象的微观行驶行为准确评估冲突风险。


    Access

    Download


    Export, share and cite



    Title :

    Signal-free intersection traffic conflict identification and risk assessment system and method


    Additional title:

    一种无信号交叉口交通冲突识别与风险评估系统及方法


    Contributors:
    ZHANG ZHIPENG (author) / WANG JUNPU (author) / CHAI HAO (author) / WANG YIZENG (author) / DAI LEI (author) / HU ZHE (author) / XU FENG (author) / HU HAO (author)

    Publication date :

    2024-11-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



    Intersection traffic conflict risk prediction method and system

    WANG YONGJIE / WANG TAO / GE YINGEN et al. | European Patent Office | 2024

    Free access

    Risk factor assessment method for non-motor vehicle traffic conflict at plane intersection

    CHEN YIKAI / TAO ZHENGBIN / ZHANG YAOYI et al. | European Patent Office | 2023

    Free access

    Intersection traffic conflict identification method, apparatus and device, and storage medium

    CAI YONGWEI / CHEN ZHENG / HONG BO | European Patent Office | 2024

    Free access

    Urban intersection traffic safety risk assessment method and system

    LIU WAN / DAI SHUAI / ZHU XINYU et al. | European Patent Office | 2023

    Free access

    Intersection traffic signal control logic free design system and method

    YANG JUN / SHI KANG / LIU YAN et al. | European Patent Office | 2024

    Free access