Recent studies have leveraged the existence of network macroscopic fundamental diagrams (MFD) to develop regional control strategies for urban traffic networks. Existing MFD-based control strategies focus on vehicle movement within and across regions of an urban network and do not consider how freeway traffic can be controlled to improve overall traffic operations in mixed freeway and urban networks. The purpose of this study is to develop a coordinated traffic management scheme that simultaneously implements perimeter flow control on an urban network and variable speed limits (VSL) on a freeway to reduce total travel time in such a mixed network. By slowing down vehicles traveling along the freeway, VSL can effectively meter traffic exiting the freeway into the urban network. This can be particularly useful since freeways often have large storage capacities and vehicles accumulating on freeways might be less disruptive to overall system operations than on urban streets. VSL can also be used to change where freeway vehicles enter the urban network to benefit the entire system. The combined control strategy is implemented in a model predictive control framework with several realistic constraints, such as gradual reductions in freeway speed limit. Numerical tests suggest that the combined implementation of VSL and perimeter metering control can improve traffic operations compared with perimeter metering alone.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Coordinated Perimeter Flow and Variable Speed Limit Control for Mixed Freeway and Urban Networks


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:
    Yocum, Rebeka (Autor:in) / Gayah, Vikash V. (Autor:in)


    Erscheinungsdatum :

    2021-09-09




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Novel Freeway Traffic Control with Variable Speed Limit and Coordinated Ramp Metering

    Lu, Xiao-Yun / Varaiya, Pravin / Horowitz, Roberto et al. | Transportation Research Record | 2011



    Freeway Crash Prediction Models with Variable Speed Limit/Variable Advisory Speed

    Hasan, Tarek / Abdel-Aty, Mohamed / Mahmoud, Nada | ASCE | 2023


    Investigation of Multi-Objective Freeway Variable Speed Limit Control Strategies

    Ye, Huixuan / Fang, Jie / Tu, Lili et al. | ASCE | 2018