Budge, S.Ingolfsson, A.Erkut, Erhan2010-08-092010-08-092009-02 0030-364Xhttp://hdl.handle.net/10679/69https://doi.org/10.1287/opre.1080.0591Due to copyright restrictions, the access to the full text of this article is only available via subscription.To calculate many of the important performance measures for an emergency response system, one requires knowledge of the probability that a particular server will respond to an incoming call at a particular location. Estimating these "dispatch probabilities" is complicated by four important characteristics of emergency service systems. We discuss these characteristics and extend previous approximation methods for calculating dispatch probabilities to account for the possibilities of workload variation by station, multiple vehicles per station, call- and station-dependent service times, and server cooperation and dependence.engrestrictedAccessarticle57125125500026510730002010.1287/opre.1080.0591Emergency response systemDispatch probabilitiesAmbulance serviceApproximationsHealth care2-s2.0-61449173716