ZHANG Wei-hua, LU Hua-pu, SHI Qin, LIU Qiang. Optimal signal-planning method of intersections based on bus priority[J]. Journal of Traffic and Transportation Engineering, 2004, 4(3): 49-53.
Citation: ZHANG Wei-hua, LU Hua-pu, SHI Qin, LIU Qiang. Optimal signal-planning method of intersections based on bus priority[J]. Journal of Traffic and Transportation Engineering, 2004, 4(3): 49-53.

Optimal signal-planning method of intersections based on bus priority

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  • Author Bio:

    ZHANG Wei-hua(1967-), male, PhD, associate professor, 86-10-62772615, ahweihua@mail.tsinghua.edu.cn

  • Received Date: 2003-12-22
  • Publish Date: 2004-09-25
  • By the traditional signal-planning method, cycle is determined according to minimum average vehicle delay, green time is determined according to the vehicle flow ratio of phases. The traditional signal-planning method is unfair to these phases with a big proportion of bus, because a bus can load more passengers than a non-bus does. This paper set up a signal-planning method, in which the average people delay is regarded as an optimal aim of cycle, and green time is determined according to passenger quantity and the saturation of phases. When according to this method to plan signal time, though average vehicle delay is bigger than that of traditional method, but average bus delay and people delay are reduced near 30%. Applied results show that this signal-planning method provides priority for bus, and reduces bus delay on the premise of ensuring smooth traffic.

     

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