The invention relates to the technical field of expressway traffic flow operation states, and discloses an expressway congestion propagation method based on a CA-SIR (Cellular Automata-Susceptile, Infected, Remote, Cellular Automata-infectious disease) model in a foggy day environment, and the method comprises the following steps: 1), 2), 3), 4), 5), 6) and 7). According to the highway congestion propagation method in the foggy environment, the vehicle lane changing rule and the braking probability in the foggy environment are established on the basis of fully considering the difference of the influence of different visibility on traffic flow in the foggy environment and combining the influence of different visibility on the driving sight distance and the traffic congestion; key parameters of highway congestion propagation are calibrated, quantitative analysis of influence of different visibility on highway traffic flow in a foggy environment is realized, and evolution and development of crowded vehicles at each time point of highway congestion propagation are obtained according to vehicle speed characteristics under different visibility. And the purpose of completing the research on the traffic congestion propagation mechanism of the expressway with different visibility in the foggy environment is achieved.

    本发明涉及高速公路交通流运行状态技术领域,且公开了一种在雾天环境下基于CA‑SIR(CA‑SIR,Cellular Automata‑Susceptible,Infected,Removed,元胞自动机‑传染病)模型的高速公路拥挤传播方法,包括以下步骤:1)、2)、3)、4)、5)、6)、7)。该雾天环境下的高速公路拥挤传播方法,通过充分考虑雾天环境下不同能见度对交通流影响的差异,在结合不同能见度对驾驶视距和交通拥挤的影响的基础上,建立雾天环境下的车辆换道规则和制动概率,标定高速公路拥挤传播的关键参数,实现定量分析雾天环境下不同能见度对高速公路交通流影响,由不同能见度下的车辆速度特性得出高速公路拥挤传播各时间点的拥挤车辆演化发展,达到了完成雾天环境下不同能见度的高速公路交通拥挤传播机理研究的目标。


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    Title :

    Highway congestion propagation method based on CA-SIR model in foggy environment


    Additional title:

    一种雾天环境下基于CA-SIR模型的高速公路拥挤传播方法


    Contributors:
    YAO JIAO (author) / CHO JUNG (author) / BAO YUJIE (author) / HE JIAPING (author) / HAN YIN (author) / WANG JIAWEN (author) / LI JUNJIE (author) / LI JIAYANG (author) / CHEN XIN (author) / WU XIURONG (author)

    Publication date :

    2022-11-25


    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



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