China Safety Science Journal ›› 2023, Vol. 33 ›› Issue (6): 128-134.doi: 10.16265/j.cnki.issn1003-3033.2023.06.0770

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Safe travel path planning method for railway passengers during pandemic

LYU Hongxia1,2,3(), LIU Kun1, JIANG Xueying1, PAN Jinshan1,2,3,**()   

  1. 1 School of Transportation and Logistics, Southwest Jiaotong University, Chengdu Sichuan 610031, China
    2 National and Local Joint Engineering Laboratory of Comprehensive Intelligent Transportation, Chengdu Sichuan 610031, China
    3 National Engineering Laboratory of Integrated Transportation Big Data Application Technology, Chengdu Sichuan 610031, China
  • Received:2023-01-11 Revised:2023-04-15 Online:2023-08-07 Published:2023-12-28
  • Contact: PAN Jinshan

Abstract:

In order to reduce the risk of passenger travel infection during the pandemic, and help scientific and accurate epidemic prevention and control, a dynamic planning method for railway passengers' safe travel path considering real-time regional infection risk was proposed. Firstly, based on the probabilistic risk theory, the regional infection risk was defined as the function of infection outbreak probability and impact level. The regional infection risk was evaluated by considering the passenger exchange intensity, regional population and mobility. Secondly, comprehensively considering the regional infection risk, travel time and ticket price, the generalized travel cost was obtained by the Logit model. The generalized travel cost between adjacent nodes as the weights of the network edges, and then the railway travel service network considering the travel infection risk was constructed. Finally, based on passenger travel demands and the principles of travel path decisions during the pandemic, a railway passenger safe travel path planning model with the goal of minimizing the generalized travel cost was established, and solved by the Dijkstra algorithm. Taking the path selection from Hengshui to Beijing as an example, the method proposed in this paper was compared with the path planning method that only considers travel time and travel costs, and the changes of the actual passenger flow sharing rate for each scheme were analyzed. The research results show that: based on the passenger travel data from the rail service network, the infection risk can be evaluated by the method proposed in the paper. And the results are significantly correlated with the active cases. The risk of travel infection is an important factor influencing travelers' choice of travel routes, causing a significant increase in travel costs, and the route planning results in the paper are generally consistent with the actual travel patterns during the pandemic.

Key words: pandemic, railway passengers, safety travel, path planning, regional infection risk