Accessibility analysis of risk severity.

This study measures severity of network disruptions in the Minneapolis-St. Paul region by comparing the cumulative opportunity accessibility before-and-after removing freeway segments. Accessibility to jobs and accessibility to resident workers are measured respectively in the morning and evening peak hours. It is shown that the links with more severe consequences of disruption tend to be near or at freeway interchanges. Betweenness helps explain risk severity. [ABSTRACT FROM AUTHOR]