Ambulance Location and Allocation considering two types of vehicles and different service providers

Ambulance location and allocation have been studied to improve Emergency Medical Service Systems in the past decades. The problem in Mexico and other Latin American countries mains that few ambulances are available for the system, and more than one service provider is involved in attending accidents. These service providers are generally uncoordinated; each locates their ambulances where they think it's better.

The investigation's objective is to obtain an optimal location and allocation for all service providers' ambulances if necessary, considering constraints for each service provider, e.g., different potential sites, coverage radii, or ambulance available for each service provider when an emergency enters the system; and looking for maximize accident coverage.