Researchers widely use the two-fluid model (TFM) to evaluate the performance of urban networks. However, the TFM is deterministic and does not capture the stochastic relation between speed and density. The present study develops a modified two-fluid model (MTFM). The variance function or the distribution of speed or travel time for a given density is incorporated using a percentile-based indicator, travel time uncertainty (TTU). The percentile-based indicators for the speed distribution are more robust than the variance or other moment-based indicators. The effect of TTU is incorporated using two parameters, $$\alpha ,$$ α , and $$ \beta $$ β . The applicability of the proposed MTFM is demonstrated using empirical data collected at the corridor and network levels. The TFM and MTFM were calibrated by formulating a nonlinear optimization problem. Based on the investigation using the corridor and network-level data, it was concluded that the MTFM showed better performance than the existing model. .


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    Titel :

    Modified two-fluid model of traffic flow


    Weitere Titelangaben:

    N. GORE ET AL.
    TRANSPORTATION LETTERS


    Beteiligte:
    Gore, Ninad (Autor:in) / Arkatkar, Shriniwas (Autor:in) / Joshi, Gaurang (Autor:in) / Easa, Said (Autor:in)

    Erschienen in:

    Transportation Letters ; 16 , 3 ; 263-278


    Erscheinungsdatum :

    15.03.2024


    Format / Umfang :

    16 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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