The invention discloses a pedestrian crossing safety performance evaluation method suitable for a signal-free road section. The method comprises the following steps: S1, determining a signal-free road section needing to be evaluated; s2, determining the number of conflict events required for evaluating the road section; s3, calculating a post-intrusion time (PET) value and a conflict speed V; the conflict speed V is selected from an instantaneous speed at which a driver notices pedestrians and starts to decelerate, and is obtained by analyzing the video by using python software; s4, performing clustering analysis on the PET value and the conflict speed V obtained by video analysis through python software, and obtaining two clustering centers by using a K-Means algorithm during clustering analysis; and S5, substituting the PET value of the clustering center obtained by clustering analysis and the conflict speed into a risk assessment function, and classifying pedestrian and vehicle conflicts according to an RS value to assess the safety performance.

    本发明公开了一种适用于无信号路段行人过街安全性能测评方法,包括以下步骤:S1、确定所需评估的无信号路段;S2、确定评估该路段所需的冲突事件数量;S3、计算后侵入时间(PET)值和冲突速度V;所述冲突速度V选取的是驾驶人注意到行人并开始减速的瞬时速度,利用python软件对视频分析得到;S4、将视频分析得到的PET值和冲突速度V通过python软件进行聚类分析,聚类分析时利用K‑Means算法,得出两个聚类中心;S5、将聚类分析得到的聚类中心的PET值和冲突速度,代入风险评估函数中,根据RS值将将行人与车辆冲突进行分类,以评估安全性能。


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    Title :

    Pedestrian crossing safety performance evaluation method suitable for signal-free road section


    Additional title:

    一种适用于无信号路段行人过街安全性能测评方法


    Contributors:
    YUAN LI (author) / WANG CANZHI (author)

    Publication date :

    2024-08-06


    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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES




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