Volume 42 Issue 1
Feb.  2024
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Article Navigation >  Journal of Transport Information and Safety  > 2024  >  42(1): 131-141
SHEN Mengjun, DONG Ningning, LI Tiezhu, GUO Jingwen, LIU Hui. A Method for Coordinated Passenger Flow Control at Stations During Peak Period Based on Genetic Algorithms[J]. Journal of Transport Information and Safety, 2024, 42(1): 131-141. doi: 10.3963/j.jssn.1674-4861.2024.01.015
Citation: SHEN Mengjun, DONG Ningning, LI Tiezhu, GUO Jingwen, LIU Hui. A Method for Coordinated Passenger Flow Control at Stations During Peak Period Based on Genetic Algorithms[J]. Journal of Transport Information and Safety, 2024, 42(1): 131-141. doi: 10.3963/j.jssn.1674-4861.2024.01.015
shu

A Method for Coordinated Passenger Flow Control at Stations During Peak Period Based on Genetic Algorithms

doi: 10.3963/j.jssn.1674-4861.2024.01.015
  • 1.

    School of Transportation, Southeast University, Nanjing 211189, China

  • 2.

    Nanjing Metro Operation Co., Ltd, Nanjing 211135, China

  • 3.

    School of Transportation and Management, Nanjing Vocational Institute of Railway Technology, Nanjing 210031, China

  • Received Date: 2023-03-29
    Available Online: 2024-05-31
    Abstract
  • Passenger flow control at urban rail transit stations is an effective strategy for alleviating congestion during peak periods. However, existing measures often overlook cooperative relations among adjacent stations along the same line, indicating the need for further improvements to enhance its efficacy. In this paper, the interaction among passengers, trains, and stations is considered comprehensively. Train schedules are discretized during peak hours based on departure intervals at stations. These discrete time periods are utilized as the basis for our research and corresponding passenger arrival data are extracted accordingly. Taking into account both supply and demand considerations, optimization objectives focus on two primary aims of minimizing aggregate passenger delay time and maximizing passenger turnover volume. Considering the train transportation capacity, passenger flow control intensity, and station service level, the remaining train transportation capacity is introduced as a constraint to balance the passenger flow demand of different stations, and an optimization model station for coordinated station flow control is constructed. Given the complexity in solving multi-objective functions, an embedded genetic algorithm is proposed to address conflicts among optimal solutions. Using Line 3 of the Nanjing Metro as a case study, a comparative analysis is conducted with the scenario without coordinated flow control (first-come-first-served) during peak hours. The results show that a 1% increase in total passenger turnover results in a 2.3% decrease in the number of passenger delays, a 4.3% decrease in total passenger delay time, and significant alleviations of delays at congested sta-tions, leading to a more balanced spatial and temporal distribution of delays. To verify the algorithm's effectiveness and the model's stability, the genetic algorithm is compared with the Gurobi solver, and the sensitivity of a key parameter, the train load factor, is analyzed. The proposed genetic algorithm demonstrates better performance in addressing the dual optimization objective, thus aiding in the mitigation of significant passenger delays during peak hours.

     

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