![]() Case studies in four metropolises in the world, i.e., Shanghai, Beijing, London, and Tokyo, are conducted to examine the predisaster preparedness of the four metro networks explicitly from the perspective of route redundancy. Specifically, the effective routes between each O-D pair would provide disaggregated information from the travellers’ perspective. Compared with the existing connectivity and accessibility measures of topology network performance, route redundancy is also based on the topology network, but it takes the travellers’ route choice into consideration. The route redundancy of metro network is evaluated by statistical indicators of the distribution of the O-D-level number of effective routes. This paper provides a new dimension of assessing metro network performance-travellers’ route redundancy (or route diversity), which is defined as the number of behaviourally effective routes between each origin-destination (O-D) pair in the network. A well-designed metro system needs to provide alternative routes to travellers both in the disruptive events and the normal operating conditions for providing rerouting opportunities and balancing crowded lines. ![]() The metro system plays a very important role in the urban multimodal transportation system, yet it is susceptible to accidents.
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