In order to increase the capacity and mitigate the traffic congestion at signalized and closely spaced T-intersections, an unconventional closely-spaced T-intersections design (UCTD) was proposed. Through setting back the main T-intersection’s left-turn conflict point to the adjacent T-intersection, there is no need to change the road’s land use or set additional pre-signals for the crossover segment. A two-phase scheme can be used in the main T-intersection for better performance of the heavy traffic flow. Micro simulation was developed to evaluate the UCTD’s performance. In one scenario, the UCTD resulted in a reduction of average delays by 64%, stops by 46%, average stop time by 72%, average queue length by 50%, maximum queue length by 55%, and fuel consumption and related emissions by 14% compared to conventional T-intersections. Also, results found that the UCTD is suitable when the main T-intersection’s traffic volume is much larger than that of the second one.


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    Title :

    Analysis of Unconventional Design for Signalized and Closely-Spaced T-Intersections


    Contributors:
    Wang, Xiaoning (author) / Song, Li (author) / Wu, Peijie (author) / Yu, Siyuan (author)

    Conference:

    19th COTA International Conference of Transportation Professionals ; 2019 ; Nanjing, China


    Published in:

    CICTP 2019 ; 2636-2647


    Publication date :

    2019-07-02




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English