The primary objective of this paper is to analyze freeway operation efficiency and safety of integrated control strategy. The simulation parameters are calibrated and validated using collected data on southbound I-880 freeway in California, the United States. The integrated control is estimated using cascade feedback of mainstream traffic flow control (MTFC-VSL) via variable speed limit. And the application of ramp metering (RM) is connected using specifically developed split-range-like scheme. The integrated control strategy is implemented through VISSIM. The results show that the integrated control had a 41.5% improvement in total travel time (TTT) over the no-control case. Moreover, about 59.8% of total conflicts are reduced by the integrated control strategy than the no-control case. Thus, it is beneficial to well understanding the mechanism of integrated control strategy and using it in practical implementation.


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    Title :

    Operation Efficiency and Safety Analysis of Integrated Ramp Metering and Mainstream Traffic Flow Control via Variable Speed Limits on Freeway


    Contributors:
    Zheng, Yuan (author) / Qu, Xu (author) / Ran, Bin (author) / Zhang, Jian (author) / Dai, Guanchen (author)

    Conference:

    17th COTA International Conference of Transportation Professionals ; 2017 ; Shanghai, China


    Published in:

    CICTP 2017 ; 2201-2210


    Publication date :

    2018-01-18




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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