Vulnerability patterns of road network to extreme floods based on accessibility measures

Papilloud, Tsolmongerel; Keiler, Margreth (2021). Vulnerability patterns of road network to extreme floods based on accessibility measures. Transportation research Part D. Transport and environment, 100, p. 103045. Elsevier 10.1016/j.trd.2021.103045

Preview

Text 1-s2.0-S1361920921003424-main.pdf - Published Version Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND). Download (23MB) | Preview

Accessibility is a key measure of the vulnerability of road networks to disruptions such as floods. However, studies comparing the contribution of parameters to the accuracy of accessibility-based vulnerability assessment are lacking. We propose modifying two accessibility measures to include flood-affected populations, opportunities, and average shortest travel time. We also applied three methods including the divergent ranking method to identify the direct impact of extreme floods on road networks. The shortest travel time pathway calculation was enhanced with the inclusion of spatially distributed settlements as an input. The results indicate a strong relationship between parameter weights and the accessibility measures, irrespective of the evaluated approaches. The results of the study highlight that measures of overall vulnerability, with respect to inter-comparisons of flood scenarios alone, do not fully capture the local vulnerability of some traffic zones. This is particularly evident with the flooding of highly connected roads that serve these zones.

Interest & Impact

Downloads

125 since deposited on 22 Oct 2021
39 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item