The soak-time of vehicle trip starts is defined as the duration of time in which the vehicle's engine is not operating and that precedes a successful vehicle start. The temporal distribution of the soak-time in an area is an important determinant of area-wide mobile source emissions. In the current paper, we formulate and implement a methodology for modeling soak-time durations. The methodology involves estimation of models using vehicle trip data from household travel surveys and supplementary zonal demographic/land-use data. The effectiveness of the methodology lies in its easy application at the traffic zonal level within a metropolitan region to obtain zone-specific soak-time distributions by time-of-day and origin activity purpose. The methodology is applied to estimate soak-time duration models for the Dallas-Fort Worth area of Texas.


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    Title :

    Modeling Soak-Time Distribution of Trips for Mobile Source Emissions Forecasting: Techniques and Applications


    Contributors:
    H. S. Nair (author) / C. R. Bhat (author)

    Publication date :

    2000


    Size :

    38 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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