Road network vulnerability analysis of area-covering disruptions: A grid-based approach with case study
2012 (English)In: Transportation Research Part A: Policy and Practice, ISSN 0965-8564, Vol. 46, no 5, 746-760 p.Article in journal (Refereed) Published
We present an approach to systematically analysing the vulnerability of road networks under disruptions covering extended areas. Since various kinds of events including floods, heavy snowfall, storms and wildfires can cause such spatially spread degradations, the analysis method is an important complement to the existing studies of single link failures. The methodology involves covering the study area with grids of uniformly shaped and sized cells, where each cell represents the extent of an event disrupting any intersecting links. We apply the approach to the Swedish road network using travel demand and network data from the Swedish national transport modelling system Sampers. The study shows that the impacts of area-covering disruptions are largely determined by the level of internal, outbound and inbound travel demand of the affected area itself. This is unlike single link failures, where the link flow and the redundancy in the surrounding network determine the impacts. As a result, the vulnerability to spatially spread events shows a markedly different geographical distribution. These findings, which should be universal for most road networks of similar scale, are important in the planning process of resource allocation for mitigation and recovery.
Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 46, no 5, 746-760 p.
Area, Disruption, Road network, Robustness, Transport, Vulnerability
Transport Systems and Logistics
IdentifiersURN: urn:nbn:se:kth:diva-24941DOI: 10.1016/j.tra.2012.02.003ISI: 000303360000002ScopusID: 2-s2.0-84859156445OAI: oai:DiVA.org:kth-24941DiVA: diva2:354574
FunderTrenOp, Transport Research Environment with Novel Perspectives
QC 201204272010-10-042010-10-042012-06-11Bibliographically approved