This is the first paper that sparked my research interest in transportation vulnerability, and what would later become the focus area of my research: the cost of transportation vulnerability and the benefit of transportation reliability. It was published almost ten years ago, in 2001: Risk and Impact of Natural Hazards on a Road Network by Erica Dalziell and Alan Nicholson from the University of Canterbury, Christchurch, New Zealand. As far as I am aware of, the Dalziell-Nicholson paper is one of the first attempts to calculate a cost benefit ratio for road closure versus mitigation investments, where the road is seen as a transportation lifeline, and thus a critical infrastructure for the communities that it links.

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