Algorithm for optimal intersection control scheme under movement lapping
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(School of Transportation, Wuhan University of Technology, Wuhan 430063, China)

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U491.114

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    Abstract:

    To improve the control efficiency of the signalized intersection control scheme, the algorithm for optimal intersection signalization scheme was proposed by considering movement lapping. Firstly, the movement compatibility relation in intersections were analyzed and refined, and the phase movements’ combination was determined. Then, the phase movements’ combination was represented and the random samplings were re-arranged. According to the phase setting requirements of intersection signal control scheme, the feasible phase combination (FPC) schemes for intersections were obtained by selecting the phase combination schemes satisfying the condition and consideration of the movement lapping. Finally, the signal phase timing and average vehicle delay were calculated by combining the existing timing model, and the control scheme corresponding to the minimum average delay was selected as the optimal control scheme of the intersection by comparing the average vehicle delay. Analysis results showed that the average delay of movement vehicles under the proposed scheme was reduced by 0.3 s/pcu compared with the ring barrier controller structure phase combination scheme (RBS), 0.5 s/pcu compared with the diffluence phase combination scheme (DS), and 4.5 s/pcu compared with the combination phase combination scheme (CS). Therefore, it showed that the proposed method is feasible.

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History
  • Received:December 08,2017
  • Revised:
  • Adopted:
  • Online: March 14,2019
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