Volume 41 Issue 5
Oct.  2023
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LI Xuemei, ZHANG Cunbao, CAO Yu, QIN Ruiyang. A Method for Collaborative Optimization of Lane Functions and Signal Control at Intersections with Variable Approach Lanes[J]. Journal of Transport Information and Safety, 2023, 41(5): 54-63. doi: 10.3963/j.jssn.1674-4861.2023.05.006
Citation: LI Xuemei, ZHANG Cunbao, CAO Yu, QIN Ruiyang. A Method for Collaborative Optimization of Lane Functions and Signal Control at Intersections with Variable Approach Lanes[J]. Journal of Transport Information and Safety, 2023, 41(5): 54-63. doi: 10.3963/j.jssn.1674-4861.2023.05.006

A Method for Collaborative Optimization of Lane Functions and Signal Control at Intersections with Variable Approach Lanes

doi: 10.3963/j.jssn.1674-4861.2023.05.006
  • Received Date: 2022-11-18
    Available Online: 2024-01-18
  • As a flexible traffic organization method, the variable approach lane can dynamically adjust the lane function of the entrance lane to improve the intersection traffic efficiency. However, in the actual operation, the variable approach lane switching only between straight and left lanes has the problem of insufficient utilization of time and space resources. Therefore, a cooperative optimization method of lane function and signal control that can switch between straight, left-turn and straight-left combined lanes is studied. Based on the real-time traffic flow data of the intersection, the method judges the lane function switching which takes into account various indicators such as intersection delay, switching time intervals, and traffic demand stability. This judgment facilitates the dynamic optimization of lane function and signal control. The lane departure flow rate correction factor for intersections with variable approach lane is introduced to improve the delay formula, taking into account the relationship between lane function and signal phase, and an optimization model based on the phase matrix is established to minimize the average vehicle delay to determine the appropriate lane function, phase and signal timing scheme. The simulation environment is conducted using VISSIM software, and verification of the simulation is carried out using the intersection of Jianshe Avenue and Xinhua Road in Wuhan as a case study. The experimental results show that, compared to the timed control method where lane functions switch exclusively between straight and left-turns, the average delay of vehicles at the intersection is reduced by 9.2%—12.5%, the average delay of the intersection from the approaching with variable approach lane is reduced by 10.8%—25%, and the average queue length is reduced by 9.8%—12.3% when utilizing the lane function and signal control coordinated optimization method that switches between straight, left, and straight-left combined lanes.

     

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