This paper presents and shows why density-based travel-time function is consistent with the fundamental diagram from traffic theory and then reviews the applications of travel time in intelligent transportation systems. This paper presents a density-based travel-time function that does not have the ill-posedness that is present in flow-based travel-time functions. The classic steady-state traffic assignment is cast using this new travel-time function, and corresponding mathematical programming formulations are proposed. It is shown that the modified Beckman formulation based on the density-based travel-time function provides a unique solution for link flows and link densities where the Wardrop condition has nonunique values for arc traffic densities.


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    Title :

    Traffic Assignment Using a Density-Based Travel-Time Function for Intelligent Transportation Systems


    Contributors:


    Publication date :

    2016




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.84 Straßenverkehr / 55.24 / 55.84 / 55.24 Fahrzeugführung, Fahrtechnik