The spacing of a vehicle is the spatial separation between this vehicle and the vehicle ahead. It forms the basis of the fundamental diagram of traffic flow. Traditional car-following models assume that the spacing of a following vehicle is strictly a function of the speed of the lead vehicle in the same lane. The recent literature, however, reports a phenomenon of spacing-speed dependency on the relative speeds to the adjacent lanes, termed speed differential effect. The aim of this paper is to statistically test the speed differential effect. To quantitatively measure the speed differential effect, we develop a mixture spacing-speed model to capture the probabilistic nature of the spacing and speed relationship, and then relate this spacing-speed relation to the relative speeds to the adjacent lanes. We apply the developed model to test the speed differential effect. Our empirical analysis provides strong statistical evidence to support the speed differential effect.


    Access

    Download


    Export, share and cite



    Title :

    Spacing-speed dependency on relative speeds to the adjacent lanes: a statistical test


    Contributors:
    Li, Baibing (author)


    Publication date :

    2024-05-03




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Apparatus for monitoring adjacent lanes

    SHIMIZU NAOTSUGU / SUZUKI KOICHIRO | European Patent Office | 2019

    Free access

    APPARATUS FOR MONITORING ADJACENT LANES

    SHIMIZU NAOTSUGU / SUZUKI KOICHIRO | European Patent Office | 2017

    Free access

    Turn Speeds and Crashes Within Right-Turn Lanes

    K. Pitzpatrick / W. H. Schneider | NTIS | 2005