Importance and exposure in road network vulnerability analysis
2006 (English)In: Transportation Research Part A: Policy and Practice, ISSN 0965-8564, E-ISSN 1879-2375, Vol. 40, no 7, 537-560 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2006. Vol. 40, no 7, 537-560 p.
Contingency planning, Road network topology, Travel reliability, Vulnerability index
Other Social Sciences not elsewhere specified
IdentifiersURN: urn:nbn:se:kth:diva-7575DOI: 10.1016/j.tra.2005.11.003ISI: 000237913200001ScopusID: 2-s2.0-33645902544OAI: oai:DiVA.org:kth-7575DiVA: diva2:12644
QC 201009172007-11-062007-11-062016-05-30Bibliographically approved