期刊
TRANSPORTATION RESEARCH PART A-POLICY AND PRACTICE
卷 40, 期 7, 页码 537-560出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tra.2005.11.003
关键词
travel reliability; vulnerability index; contingency planning; road network topology
The reliability and vulnerability of critical infrastructures have attracted a lot of attention recently. In order to assess these issues quantitatively, operational measures are needed. Such measures can also be used as guidance to road administrations in their prioritisation of maintenance and repair of roads, as well as for avoiding causing unnecessary disturbances in the planning of roadwork. The concepts of link importance and site exposure are introduced. In this paper, several link importance indices and site exposure indices are derived, based on the increase in generalised travel cost when links are closed. These measures are divided into two groups: one reflecting an equal opportunities perspective, and the other a social efficiency perspective. The measures are calculated for the road network of northern Sweden. Results are collected in a GIs for visualisation, and are presented per link and municipality. In view of the recent great interest in complex networks, some topological measures of the road network are also presented. (c) 2005 Elsevier Ltd. All rights reserved.
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