This paper provides an introduction to current research on developing a methodology for transport network vulnerability analysis, based on considerations of the socio-economic impacts of network degradation. At one level this involves considerations of alternative paths through a network and the relative probabilities of use of those paths. Whilst probability of use is important in defining potential weak spots in a network, this probability is not of itself a complete measure of vulnerability; the most critical locations in a network will show the most severe (socio-economic) consequences resulting from network failure at those locations. The methods therefore consider vulnerability assessment in terms of a planning systems process in which the performance of network components is tested against established performance criteria. The risks and consequences associated with failures at different locations need to be accounted for. (a) For the covering entry of this conference, please see ITRD abstract no. E213716.
Abstract