This paper presents a general framework for developing formulas to estimate the capacity of freeway bottlenecks caused by the presence of slow vehicles. These underperforming vehicles may represent trucks on an uphill grade, cautious lane changers at a weaving section, or any other stream of vehicles moving consistently—at least for a short period of time—more slowly than prevailing traffic. From modeling of the underperforming stream as simplified yet realistic stochastic processes, closed-form expressions for the segment's capacity can be obtained. Four such processes are presented and exemplified for the case of short uphill grades, a type of facility where existing capacity formulas fail. The proposed models—which do not need calibration—improve current estimates, and one in particular explains existing data with remarkable accuracy.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Stochastic Processes of Moving Bottlenecks


    Untertitel :

    Approximate Formulas for Highway Capacity


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:


    Erscheinungsdatum :

    2006-01-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Stochastic Processes of Moving Bottlenecks: Approximate Formulas for Highway Capacity

    Laval, J. A. / National Research Council (U.S.) | British Library Conference Proceedings | 2006



    Macroscopic analysis of moving bottlenecks

    Fadhloun, Karim / Rakha, Hesham / Loulizi, Amara | Taylor & Francis Verlag | 2019


    On the numerical treatment of moving bottlenecks

    Daganzo, Carlos F. / Laval, Jorge A. | Elsevier | 2004