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HAN Yin, XING Bing, YAO Jiao, LIU Jing. Optimal model of regional traffic signal control under mixed traffic flow condition[J]. Journal of Traffic and Transportation Engineering, 2015, 15(1): 119-126. doi: 10.19818/j.cnki.1671-1637.2015.01.015
Citation: HAN Yin, XING Bing, YAO Jiao, LIU Jing. Optimal model of regional traffic signal control under mixed traffic flow condition[J]. Journal of Traffic and Transportation Engineering, 2015, 15(1): 119-126. doi: 10.19818/j.cnki.1671-1637.2015.01.015
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Optimal model of regional traffic signal control under mixed traffic flow condition

doi: 10.19818/j.cnki.1671-1637.2015.01.015

  • School of Business, University of Shanghai for Science and Technology, Shanghai 200093, China

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  • Author Bio:

    HAN Yin(1964-), male, professor, PhD, +86-21-65711124, hanyin2000@126.com

  • Received Date: 2014-08-07
  • Publish Date: 2015-02-25
    Abstract
  • Considering that traditional regional traffic control technology could not cope with the interference problems of motor vehicles and non-motorized vehicles conflict, the characteristics of mixed traffic flow in China's urban road were combined, and the interferences of non-motorized vehicles on motor vehicles at intersections and links were researched.The traffic characteristics of motor vehicles in regional road network were obtained, and the regions with similar mixed traffic characteristics were defined.Based on the blockade effect of non-motorized vehicle, the capacity reduction of intersections and phase difference optimization of adjacent intersections were analyzed.The total delay of motor vehicles in regional road network was used as optimization objective, the optimal model of regional traffic signal control influenced by non-motorized vehicles was built, and signal cycle length, split ratio and phase difference were optimized.Genetic algorithm was introduced to solve the optimal model.Taking the Wujiaochang annular regional road network in Yangpu District of Shanghai as an example, the optimal model was verified by using VISSIM software.Verification result indicates that for signal control scheme beforeoptimization, the average delays of each motor vehicles are 24.5-42.9sat 7intersections, the average value is 35.99 s, and total vehicle delay is 256.39 hin regional road network.For signal control scheme after optimization, the values are 21.8-36.4s, 30.12 sand 214.57 hrespectively.The decrement rate of average each vehicle delay is 10%-24% at 7intersections, the average value is 16.31%.So the optimal model can effectively reduce each vehicle delay and total vehicle delay in regional road network, and the operational efficiency increases in the regional road network significantly.

     

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