Closed-loop traffic control systems can be operated by either Time-of-Day (TOD) model or Traffic Responsive Plan Selection (TRPS) mode. When properly configured, the TRPS mode has the greatest potential to provide an optimal operation due to its ability to accommodate abnormal traffic conditions such as incidents, special events, and holiday traffic. Most importantly, the TRPS mode can reduce the need for frequent redesign/updates to signal timing plans. Although TRPS model can provide a more optimal and a snappier operation than the TOD mode, numerous parameters (e.g., cycle level parameters, directionality parameters, smoothing factors, weighting factors, etc.) have to be set up correctly for the system to work as intended. Otherwise, TRPS model may select inappropriate timing plans or cause the closed-loop system to run in a continuous transitioning state. To date, there have not been any formal guidelines for selection or robust and optimal TRPS system parameters the thresholds. This report provides a novel methodology for robust and optimal selection of TRPS parameters and thresholds. The report discusses the application of the methodology using data from two closed-loop systems in Texas and demonstrates that the proposed methodology can result in up to 100 percent accurate identification of optimal timing plans. The report also shows potential benefits ranging from an annual savings of $27,630 to $5,042,200 per intersection in delay reduction alone.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Methodology for Determination of Optimal Traffic Responsive Plan Selection Control Parameters


    Contributors:

    Publication date :

    2003


    Size :

    88 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Configuration Methodology for Traffic-Responsive Plan Selection

    Abbas, Montasir M. / Chaudhary, Nadeem A. / Pesti, Geza et al. | Transportation Research Record | 2005


    Designing Optimal and Robust Traffic Responsive Plan Selection Control

    M. Abbas / N. Chaudhary / G. Pesti et al. | NTIS | 2005


    Configuration Methodology for Traffic-Responsive Plan Selection: A Global Perspective

    Abbas, Montasir / Chaudhary, Nadeem / Pesti, Geza et al. | Transportation Research Record | 2005