Abstract Saturation flow rate (SFR) estimation of approaching lanes is an essential task to evaluate the signal timing and level of service of signalized intersections. There are few existing studies on SFR estimation of the shared left-turn lane. According to relative differences of directions between the front and behind vehicles, this paper divides the headways of shared left-turn lane during green times into four categories. For each category, a method is raised to identify whether the headways are saturated based on the KPSS test. The paper first provides a method to eliminate outliers considering the factors such as distracted driving and stochastic flow. The estimated value of SFR should be 3600 divided by saturation headway, and the estimated value of saturation headway is calculated as the weighted average value of four categories.


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    Title :

    Estimation Method of Saturation Flow Rate for Shared Left-Turn Lane at the Signalized Intersection, Part I: Methodology


    Contributors:
    Tang, Ruru (author) / Wang, Yunhao (author) / Bie, Yiming (author) / Fang, Zhiqiang (author)


    Publication date :

    2019-01-01


    Size :

    9 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English