Key nodes and corridors identifying method for large-scale evacuation network based on information centrality

Large-scale natural or man-made disasters have the potential to cause great loss of life, human injury and extreme property damage. Evacuation from areas at risk is often one of the most feasible strategies that can be undertaken in response to these types of disasters. Evacuating a large population in the shortest possible time is an extremely complicated and difficult task, which primarily relies on efficient method of traffic planning for emergency evacuation. This paper puts forward a novel method of identifying key nodes and corridors for emergency evacuation based on information centrality, the characteristic of which integrates a method of identifying the efficient nodes and the critical connectivity nodes for evacuation, and a method of identifying the key evacuation corridors. In addition, the approach of connectivity key nodes has been proposed. The experiment results show that the proposed method has rationality and feasibility.