Remoteness and accessibility in the vulnerability analysis of regional road networks

Michael A.P. Taylor and Susilawati,

Transportation Research Part A: Policy and Practice, 2012, vol. 46, issue 5, 761-771

Abstract: This paper considers the development of a method for network vulnerability analysis which considers the socio-economic impacts of network degradation and seeks to determine the most critical locations in the network. The method compares the levels of remoteness (or its inverse, accessibility) of localities within the study region, on the basis of the impacts of degradation of the road network on a recognised accessibility/remoteness index that can be applied to each and every location within the region. It thus extends the earlier work on accessibility-based vulnerability analysis which was limited to assessment of impacts on selected nodes in a network. The new method allows study of impacts on both specified locations (which do not have to be represented as network nodes) and the region as a whole. The accessibility/remoteness index is defined so that an accessibility surface can be calculated for the region, and the volume under this surface provides an overall measure of accessibility. Changes in the volume under different network states thus reflect the overall impacts. The method is applied to a rural region in south east Australia.

Keywords: Network vulnerability; Accessibility index; ARIA; Regional road network; Critical infrastructure (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (40)

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DOI: 10.1016/j.tra.2012.02.008

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