The expected response time of vehicles, dispatched from fixed facilities to spatially distributed incidents, is shown to be insensitive to substantial changes in facility locations or response district design. Repositioning a set of randomly located facilities so that they are optimally located reduces mean response time by no more than 25 percent. Analysis of simple two-facility models shows, in addition, that wide variations in the position of one facility imply relatively small variations in the position of the second facility for the minimization of mean response time. Accordingly, it is suggested that redistricting and facility location based on crude assumptions coupled with an awareness of the heuristic properties illustrated by simple analytic models may yield mean response times very near the minimum possible. (See also R-531, R-532, R-567.)
This report is part of the RAND Corporation Report series. The report was a product of the RAND Corporation from 1948 to 1993 that represented the principal publication documenting and transmitting RAND's major research findings and final research.
This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit www.rand.org/pubs/permissions.
The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.