The relationship between time mean speed and space mean speed that was derived by Wardrop and presented in several textbooks is suitable for estimating time mean speeds from space mean speeds. In most cases, however, estimating space mean speed from time mean speed measurements is desired. Consequently, a new formulation utilizes the variance about the time mean speed as opposed to the variance about the space mean speed for the estimation of space mean speeds. It is demonstrated that space mean speeds are estimated within a margin of error from 0% to 1%. Furthermore, a relationship is developed between the space and time mean speed variances and between the space mean speed and the spatial travel time variance.


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    Title :

    Estimating Traffic Stream Space Mean Speed and Reliability from Dual- and Single-Loop Detectors


    Additional title:

    Transportation Research Record


    Contributors:
    Rakha, Hesham (author) / Zhang, Wang (author)


    Publication date :

    2005-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Estimating Traffic Stream Space-mean Speed and Reliability from Dual and Single Loop Detectors

    National Research Council (U.S.) | British Library Conference Proceedings | 2005


    Estimating Traffic Stream Space Mean Speed and Reliability from Dual- and Single-Loop Detectors

    Rakha, Hesham / Zhang, Wang | Transportation Research Record | 2005


    Estimating Traffic Stream Space Mean Speed and Reliability from Dual- and Single-Loop Detectors

    Rakha, H. / Zhang, W. / National Research Council (U.S.) | British Library Conference Proceedings | 2005