Based on Shanghai elevated road traffic flow, six kinds of speed-density models are calibrated by least square method for clear and rainy weather and the respective best models to estimate free-flow speed and capacity are determined. Next, the function between free-flow speed and rainfall intensity is also fitted and it is integrated into generalized speed-density models. It is found that both weather and number of lanes influence free-flow speed and capacity, and generalized speed-density models also vary with different combination of weather and number of lanes.


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    Title :

    Generalized Speed-Density Models for Urban Freeways under Rainy Weather


    Contributors:
    Sun, Hongyun (author) / Yang, Jinshun (author) / Wu, Bing (author)

    Conference:

    Fifth International Conference on Transportation Engineering ; 2015 ; Dailan, China


    Published in:

    ICTE 2015 ; 1728-1737


    Publication date :

    2015-09-25




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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