The invention discloses an urban area road traffic network subarea division method based on congestion index distribution. The method comprises the steps that an urban area road traffic network is abstracted into a directed graph, intersections are abstracted into a node set V, and interval roads are abstracted into a directed edge set E; the nodes in the V are rearranged in a descending order according to congestion indexes through the congestion indexes of the nodes; according to the method, a new node set V'is obtained, and then subarea division is carried out, so that high congestion nodes and adjacent roads and intersections with the same congestion level can be divided into the same subset, the divided result has the characteristics of fine granularity, high cohesion and low coupling, and different congestion treatment schemes can be provided for areas with different congestion levels. Resource waste is reduced, and treatment efficiency is improved. According to the invention, three traffic flow indexes are provided based on the vehicle trajectory data to comprehensively evaluate the comprehensive congestion index, and the one-sidedness of identifying the urban road traffic congestion condition by using a single traffic flow index is overcome.

    本发明公开了一种基于拥堵指数分布的城市区域道路交通路网子区划分方法,包括将城市区域道路交通路网抽象成有向图、交叉路口抽象成节点集合V、区间道路抽象成有向边集合E;通过节点的拥堵指数并按拥堵指数对V中节点降序重排,得到新的节点集合V’,再进行子区划分,从而能够将高度拥堵节点与其拥堵等级相同的邻接道路和交叉路口划分到同一子集中,划分后的结果具有粒度细、内聚高、耦合低的特点,利于我们针对不同拥堵等级的区域给出不同拥堵治理方案,减少资源浪费,提高治理效率。本发明还基于车辆轨迹数据提出三个交通流指标综合评判综合拥堵指数,克服了以单一的交通流指标来识别城市道路交通拥堵状况的片面性。


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    Title :

    Urban area road traffic network subarea division method based on congestion index distribution


    Additional title:

    基于拥堵指数分布的城市区域道路交通路网子区划分方法


    Contributors:
    YANG XIN (author) / CHEN XUENI (author) / LI SINAN (author) / GUO TIANYI (author) / ZHOU CHUANYU (author)

    Publication date :

    2023-09-08


    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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