Abstract: Method, device and system for deploying emergency vehicle units in a geographical area. A computer receives, from at least one external resource, location data and status information for each of a plurality of emergency vehicle units. The location data and status information is stored in a memory buffer. The computer applies a deployment calculation formula for calculating a deployment recommendation considering a list of weighted deployment rules, the location data, the status information and a list of priority indicators. Display the deployment recommendation. An updated deployment recommendation is received from the user interface module. Display the updated deployment recommendation. Calculate an updated list of weighted deployment rules in order for the deployment calculation formula to provide a new deployment recommendation. Display the new deployment recommendation.