Patent ID: 8830085

Claim:
A method for monitoring traffic signal preemption at one or more intersections, comprising: displaying a road map with a computer system, wherein the road map includes a plurality of roads and intersections; periodically transmitting preemption data from at least one preemption controller at a respective intersection to the computer system; displaying at least one traffic signal icon proximate the respective intersection on the road map; displaying a plurality of approach maps associated with the intersection and preemption controller, wherein the approach maps overlay one or more roads leading to the intersection, and each of the approach maps defines boundaries of a respective area, the at least one preemption controller in response to a preemption request being emitted from any of the respective areas, will process the preemption request, and the at least one preemption controller in response to the preemption request not being emitted from any of the respective areas, will not process the preemption request; and in response to receiving the preemption data, updating the road map to include a vehicle icon at a location on the road map corresponding to a location of a vehicle transmitting a preemption request as indicated by the preemption data.