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Robustness Analysis of Layered Public Transport Networks Due to Edge Overload Breakdown

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Executive Summary

The robustness of urban bus-transport networks has important influence on the network performance. This paper proposes the model of layered public bus-transport network which is composed of the logical layer and the physical layer and expounds the relationship between these two layers. The authors map the bus-transport network into two spaces: space P and space L and take space P as logical layer while space L as physical layer. They define the load of edges in the physical layer according to the traffic flow in the logical layer and assume that a removed edge only leads to a redistribution of the load through it to its neighboring edges.

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