Work zone capacity is a key variable in scheduling construction activity on roadways. Understanding the effect of different definitions of capacity on the values computed from field data will result in better planning and scheduling of lane closures. Capacity values obtained using three different definitions (and methods) of capacity: (1) maximum sustained flow, (2) rescaled cumulative flow curves, and (3) 85th percentile flow were compared using field data from short-term work zones in Missouri. The queue discharge flow (QDF) values were found to be the most conservative estimates of capacity. The 85th percentile flows were lower than the 15-min sustained flow values in all but one location. The prequeue flow (PQF) values, indicative of near-constant flow prior to breakdown, did not occur in any of the four work zones. The four-site average capacities were 1,149, 1,267 and 1,301 vphpl for QDF, 85th percentile flow, and 15-min sustained flow, respectively. These capacity values were close to the 1,240 vphpl Highway Capacity Manual (HCM)-based capacity value used in Missouri, but lower than most values found in the nationwide survey.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Analytical Methods for Deriving Work Zone Capacities from Field Data


    Beteiligte:
    Edara, Praveen (Autor:in) / Kianfar, Jalil (Autor:in) / Sun, Carlos (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2012-05-15


    Format / Umfang :

    102012-01-01 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Analytical Methods for Deriving Work Zone Capacities from Field Data

    Edara, P. / Kianfar, J. / Sun, C. | British Library Online Contents | 2012




    DERIVING MOVEMENT BEHAVIOUR FROM SENSOR DATA

    VERBIST FRANK / VAN SEVEREN JOREN / SPRUYT VINCENT et al. | Europäisches Patentamt | 2018

    Freier Zugriff

    DERIVING MOVEMENT BEHAVIOUR FROM SENSOR DATA

    VERBIST FRANK / VAN SEVEREN JOREN / SPRUYT VINCENT et al. | Europäisches Patentamt | 2016

    Freier Zugriff