To evaluate highway traffic operation conditions, this paper researches and applies the highway traffic index. Data were used from the I-880N highway with location 401240 in California, United States. Cross correlation analysis was applied to divide the highway traffic state. Then k-means clustering and quest decision tree model were used to determine the specific value of highway traffic index. Results show that highway traffic index is divided into five levels: smooth, basic smooth, mild congestion, moderate congestion, and severe congestion. The five levels are quantified as (0-2), (2-4), (4-6), (6-8), and (8-10); the division threshold of traffic density at each level is 21.93, 34.82, 41.09, 58.00, and 75.35pcu/mile/lane respectively; color classifications are green, light green, light yellow, yellow, and red; real-time release and release cycle selected based on actual situation. This study establishes a highway traffic index system and provides a theoretical basis for follow-up application.


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    Title :

    Research and Application on Highway Traffic Index System


    Contributors:
    Zheng, Yuan (author) / Ran, Bin (author) / Lu, Zhengfeng (author) / Qu, Xu (author) / Zhang, Jian (author)

    Conference:

    18th COTA International Conference of Transportation Professionals ; 2018 ; Beijing, China


    Published in:

    CICTP 2018 ; 1475-1484


    Publication date :

    2018-07-02




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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