The average travel time for emergency units such as fire engines, ambulances, and police patrol cars, which respond to spatially distributed incidents, is not necessarily minimized by always dispatching the units closest to each incident. Methods are described for changing response areas to reduce both average travel time and the imbalance of workload among units.
Chaiken, Jan M., Allocation of Emergency Units: Response Areas. Santa Monica, CA: RAND Corporation, 1971. https://www.rand.org/pubs/papers/P4745.html. Also available in print form.
Chaiken, Jan M., Allocation of Emergency Units: Response Areas, Santa Monica, Calif.: RAND Corporation, P-4745, 1971. As of September 08, 2021: https://www.rand.org/pubs/papers/P4745.html