Road Network Robustness for Avoiding Functional Isolation in Disasters
Publication: Journal of Transportation Engineering
Volume 130, Issue 5
Abstract
In a disaster situation, road networks play a critical role in maintaining routes for evacuation and logistics. In the event of a catastrophic disaster such as an earthquake, part of the road network may be easily broken into isolated components. In this situation, it is critical that individuals in each district have access to vital facilities in their local neighborhood so that no district is isolated. In this paper, we propose using a topological index (TI) to quantify road network dispersiveness/concentration. Dispersiveness/concentration evaluated by the TI is a valuable approach to evaluate the isolation of districts in a city. We used the index to evaluate dispersiveness/concentration of a road network in the Hanshin region in Japan, which experienced severe damage in the 1995 Hanshin-Awaji Earthquake. In order to construct the graph for calculating TI, we also present the methodology for specifying effective road links for avoiding functional isolation of districts.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 130 • Issue 5 • September 2004
Pages: 560 - 567
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Mar 11, 2003
Accepted: Jun 11, 2003
Published online: Aug 16, 2004
Published in print: Sep 2004
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