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LIU Qin, XU Jian-min. Coordinated control model of regional traffic signals[J]. Journal of Traffic and Transportation Engineering, 2012, 12(3): 108-112. doi: 10.19818/j.cnki.1671-1637.2012.03.016
Citation: LIU Qin, XU Jian-min. Coordinated control model of regional traffic signals[J]. Journal of Traffic and Transportation Engineering, 2012, 12(3): 108-112. doi: 10.19818/j.cnki.1671-1637.2012.03.016
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Coordinated control model of regional traffic signals

doi: 10.19818/j.cnki.1671-1637.2012.03.016
  • 1.

    School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, Guangdong, China

  • 2.

    School of Mechanical and Electrical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China

More Information
  • Author Bio:

    LIU Qin (1981-), female, lecturer, doctoral student, +86-20-89003185, liuqin_901@63.com

    XU Jian-min (1960-), male, professor, PhD, +86-20-87114469, aujmxu@scut.edu.cn

  • Received Date: 2012-01-06
  • Publish Date: 2012-06-25
    Abstract
  • In order to improve the traffic efficiency of traffic area, a coordinated control model of regional signals was constructed under all kinds of traffic conditions.The total queue vehicle number and the total output vehicle number of regional intersection were used as performance indexes of the model.The constraint conditions of the model were established by considering the variable relationship of the adjacent cycle queue vehicle numbers, closed phase difference of intersections and effective green time.The effective green time and waiting vehicle number were initialized by particle swarm algorithm.The effective green time was solved by simulated annealing algorithm.The road network of a certain intersection was simulated under different traffic states.Simulation result shows that the queue vehicle number reduces by 5.3% and the total output vehicle number of region increases by 5.5% in low peak period compared with the TRANSYT model.The queue vehicle number reduces by 17.9% and the total output vehicle number of region increases by 33.4% in peak period compared with the TRANSYT model.The signal optimizing scheme of a regional intersection shows that the lane saturations averagely reduce by 1.8% and the queue vehicle number averagely decrease by 2.9% comparing with the TRANSYT model.It's proved that the model is effective in all kinds of traffic conditions, especially in peak period, its control effect is better than the TRANSYT model.

     

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