It is thought volume and speed of traffic flow have great influence on traffic safety in many researches. Besides, considering operating environment of expressways of PRC (People's Republic of China), the paper believes proportion of heavy vehicle is also an important influencing factor. Based on the data of Jiliao Expressway, the paper respectively analyzes the relationship between accident rate and signal characteristic parameter traffic volume per hour, average speed, coefficient of speed variation and proportion of heavy vehicle. Then, taking the four characteristic parameters as independent variables, the paper establishes accident rate prediction model by regression analysis and verifies the model. The model can be used to evaluate traffic safety of expressways.


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    Title :

    Analysis and Modeling of Safety Based on Expressway Traffic Flow State


    Contributors:
    Mu, Tao (author) / Shi, Boying (author) / Chen, Qiang (author) / Zhang, Ruhua (author)

    Conference:

    Third International Conference on Transportation Engineering (ICTE) ; 2011 ; Chengdu, China


    Published in:

    ICTE 2011 ; 3183-3188


    Publication date :

    2011-07-13




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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