The invention discloses a method for evaluating the running stability of straight-going vehicles at an intersection. The method is used for evaluating the running safety of the straight-going vehicles influenced by left-turning vehicles at a permitted phase in the intersection. The method comprises the following parts: initializing parameters, acquiring a time sequence of a straight traffic flow time headway, reconstructing a phase space, analyzing Lyapunov stability, deleting an outlier and calculating an outlier rate. The data required by the evaluation method is only the time headway sequence of the straight traffic flow. The algorithm framework is automatically realized through a written program, and the running safety of the straight traffic flow at the four intersections in the Changchun is analyzed. The contribution of the invention is to provide a quantitative and easy-to-implement method so as to evaluate the operation safety of the straight traffic flow at the intersection. In practice, the method can be applied to effect evaluation before and after improvement of a signal control scheme or a channelization scheme.

    本发明公开了一种交叉口直行车辆运行稳定性评价方法,用来评估交叉口内受许可相位下左转车辆影响的直行车辆的运行安全性。该方法包括以下几个部分:参数初始化、获取直行车流车头时距的时间序列、相空间重构、Lyapunov稳定性分析、离群值删除和离群率计算。该评价方法所需要的数据只有直行车流的车头时距序列。通过编写的程序来自动实现该算法框架,分析了长春四个交叉口的直行车流运行安全性。该发明的贡献是提供了一种定量和容易实现的方法,以评估交叉口直行车流的运行安全性。在实践中,可将其应用于信号控制方案或渠化方案的改进前后的效果评价当中。


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    Title :

    Method for evaluating running stability of straight vehicles at intersection


    Additional title:

    一种交叉口直行车辆运行稳定性评价方法


    Contributors:
    XIONG SHUAI (author) / ZHU XIAODONG (author) / MENG WEIWEI (author) / GUO LIPING (author) / NIU KAI (author) / YOU TINGTING (author) / LUO RUIQI (author) / GAO JIANING (author)

    Publication date :

    2023-04-04


    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



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