Analysis of Factors Influencing the Start-Up of a Feeder Bus Plan under a Sudden Subway Service Disruption

When a sudden service disruption occurs in the urban subway system, there may be a large number of passengers stranded. The subway management department needs to judge the degree of the disruption, and start the ground feeder bus to evacuate the stranded passengers timely and efficiently under certain conditions. This paper first figures out the influencing factors of starting the feeder bus plan, including the location where the disruption occurred, the interval length of the disruption, time period, stranded passenger flow, fault duration, etc. In order to analyze the mutual influencing relationship among the factors, an interpretation structure (ISM) model is constructed. With the results of the ISM model, we can find that the stranded passenger flow and fault duration are the fundamental factors affecting the starting of feeder bus plan. The achievements have certain guiding significances for formulating and perfecting the feeder bus plan under the service disruption of the subway.