The paper presents a practical method for incorporation of travel time reliability in a regional travel model. The discussion includes five consecutive steps. First it describes how the vehicle speed dataset for the metropolitan area of Phoenix, AZ, termed HERE, was processed and link-level volume–delay–reliability functions were estimated, and then how link-level reliability measures can be applied for network path building. The third step describes how trip origin–destination (OD) reliability measures can be constructed out of the link-level reliability measures. The fourth step involves implementation of the link-level and OD-level reliability measures in highway assignment, mode choice, and other travel models. The fifth step includes model validation and sensitivity tests. The paper addresses several long-standing issues associated with incorporation of travel time reliability in operational travel models in practice. These issues include construction of OD reliability measures with the recognition that the core link-level reliability measures such as standard deviation or variance are not additive in a general case, accounting for a partial correlation between travel time distributions for different links, and incorporation of travel time reliability in a standard static assignment.


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    Titel :

    Incorporation of Travel Time Reliability in Regional Travel Model


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:
    Gupta, Surabhi (Autor:in) / Vovsha, Peter (Autor:in) / Dutta, Arup (Autor:in) / Livshits, Vladimir (Autor:in) / Zhang, Wang (Autor:in) / Zhu, Haidong (Autor:in)


    Erscheinungsdatum :

    2018-09-09




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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