Evaluating critical lines and stations considering the impact of the consequence using transit assignment model ‐case study of London's underground network |
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| Authors: | Hiroshi Shimamoto Fumitaka Kurauchi Jan‐Dirk Schmöcker Michael G H Bell |
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| Institution: | 1. Hiroshi Shimamoto, Hiroshima University, Japan;2. Fumitaka Kurauchi, Kyoto University, Japan;3. Jan‐Dirk Schm?cker, Tokyo Institute Of Technology, Japan;4. Michael G H Bell, Imperial College London, UK |
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| Abstract: | As the problem of full transit vehicles is encountered daily by passengers in most of the big cities, previous research evaluated the consequence of overcrowding in terms of on‐board crowding and passengers not being able to board with full vehicles. The impact of overcrowding in the real world is, however, not necessarily proportional to these numbers. This paper attempts to specify the critical lines and stations of a network by considering the number of passengers failing to board and attempting to evaluate its impact on service quality and safety risks. The hypothesis is that larger stations with wider platforms can often cope better with overcrowding than smaller stations. Therefore a station size dependent satisfaction function is proposed, which takes values from 0 to 1. The method is applied to London's underground network with a number of scenarios which show critical stations in the network if delays occur. |
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