A loop detector is commonly used in detecting traffic states (flow, density, and speed). However, a loop detector's location and detection interval will have an influence on obtaining the traffic state. This paper proposes a method for generating the traffic state in a loop detector's mechanism based on the unique traffic flow (vehicular trajectories). In this paper, vehicular trajectories were first achieved based on vehicle space and time information obtained from a VISSIM model. Then, vehicle total travel time and distance were calculated in each detective space-time region. Finally, based on Edie's equation, the traffic state (flow, density and speed) was achieved. The proposed traffic state generation method was tested on Interstate 894, and a typical traffic flow fundamental diagram was successfully obtained. Compared with other methods, the proposed method can easily test the influence of loop detector settlement on traffic state accuracy.


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    Title :

    Traffic State Generation from Loop Detectors Based on Vehicular Trajectory Data


    Contributors:
    Yang, Han (author) / Zhang, Jian (author) / Yang, Jianhao (author)

    Conference:

    14th COTA International Conference of Transportation Professionals ; 2014 ; Changsha, China


    Published in:

    CICTP 2014 ; 703-710


    Publication date :

    2014-06-24




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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