The characterization of the quality of traffic service in urban street networks has been made according to the Two-Fluid Model of Town Traffic. A comparison of traffic related characteristics in various cities around the world using the Two-Fluid methodology has given insight into the physical network features which most strongly affect the quality of traffic service and the model parameters. The Two-Fluid model has also been used in before/after studies in Dallas, Lubbock and San Antonio, where changes in traffic control strategies and mix of vehicles had taken place. The sensitivity of the model parameters to the vehicle type used in the data collection has also been investigated. Finally, time-lapse aerial photographs of traffic in Austin and Dallas have been reduced and analyzed to establish relations among network-wide averages of fraction of vehicles stopped, speed, concentration and flow, hence improving the Two-Fluid methodology by allowing the comparison of the quality of traffic service in various networks to be made under similar vehicular concentrations.


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    Title :

    Characterizing the Quality of Traffic Service in Urban Street Networks


    Contributors:
    R. Herman (author) / S. Ardekani (author)

    Publication date :

    1984


    Size :

    198 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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