Research on traffic control under mixed flow has become a hot topic. However, most current strategies only focus on traffic efficiency and lack consideration of regional safety. In this study, we developed a traffic hierarchical control strategy based on MFD (Macroscopic Fundamental Diagram) and MSD (Macroscopic Safety Diagram) that integrates traffic guidance and perimeter control in a mixed traffic flow environment, aiming to alleviate regional congestion, improve the trip-completion efficiency of regional traffic flow, and ensure the safety throughout the region. The strategy is divided into two layers. The upper-level controller calculates the critical accumulation in real time that achieves the best balance between traffic efficiency and safety based on MFD and MSD and feedback to lower-level controllers. The lower-level controllers maintain the number of vehicles in an interval near the critical accumulation through perimeter control and path guidance. A simulated network from Suzhou, China, is used to verify the proposed model, and the results show that the model improves both traffic efficiency and safety.


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    Title :

    Traffic Hierarchical Control Strategy in Mixed Traffic Flow Environment via Perimeter Control and Traffic Guidance


    Contributors:
    Wang, Jianguo (author) / Lu, Weike (author) / Sun, Chuan (author) / Mao, Jiannan (author) / Nie, Qifan (author)

    Conference:

    24th COTA International Conference of Transportation Professionals ; 2024 ; Shenzhen, China


    Published in:

    CICTP 2024 ; 1946-1958


    Publication date :

    2024-12-11




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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