EMBLEM2: An empirically based large scale evacuation time estimate model

Michael K. Lindell

Transportation Research Part A: Policy and Practice, 2008, vol. 42, issue 1, 140-154

Abstract: This article describes a simple, rapid method for calculating evacuation time estimates (ETEs) that is compatible with research findings about evacuees' behavior in hurricanes. This revision of an earlier version of the empirically based large scale evacuation time estimate method (EMBLEM) uses empirical data derived from behavioral surveys and allows local emergency managers to calculate ETEs by specifying four evacuation route system parameters, 16 behavioral parameters, and five evacuation scope/timing parameters. EMBLEM2 is implemented within a menu-driven evacuation management decision support system (EMDSS) that local emergency managers can use to calculate ETEs and conduct sensitivity analyses to examine the effects of plausible variation in the parameters. In addition, they can run EMDSS in real time (less than 10Â min of run time) to recalculate ETEs while monitoring an approaching hurricane. The article provides an example using EMDSS to calculate ETEs for San Patricio County Texas and discusses directions for further improvements of the model.

Date: 2008
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