State-of-the-practice signal timing techniques used at isolated actuated controlled intersections can result in suboptimal operation. This paper proposes a new tactical control algorithm that integrates real-time stop bar presence detection with real-time flow rate information to identify a downstream flow restriction. If a flow restriction is identified, a phase with a constant call could be terminated earlier than its specified maximum or split time. This algorithm was validated with real-time data to predict downstream bottleneck conditions and then by viewing the archived video for confirmation of the condition. The algorithm was applied during a 504-h period of signal operation. During this period, the algorithm identified 76 bottlenecks. Overall, 75.0% of these events were visually confirmed. Algorithm failures were caused by a variety of conditions such as large trucks, inattentive drivers, and detector errors.


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    Titel :

    Evaluation of Flow-Based Traffic Signal Control Using Advanced Detection Concepts


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:
    Smaglik, Edward J. (Autor:in) / Bullock, Darcy M. (Autor:in) / Urbanik, Thomas (Autor:in) / Bryant, Dan (Autor:in)


    Erscheinungsdatum :

    2006-01-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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