Abstract: A low-cost system for simultaneously displaying the locations of all nearby emergency vehicles onto the same moving map as the current location of another vehicle is described. Each emergency vehicle receives location data from a OPS receiver and broadcasts the location data using a Bluetooth or other transmitter directly to associated receivers in other vehicles. Other vehicles receive location data corresponding to their own locations using their own OPS receivers and each displays their own location onto their own moving map display in the usual manner. Additionally, the other vehicles also have Bluetooth or other receivers which directly receive the local broadcasts containing emergency vehicle locations and display the locations of all emergency vehicles simultaneously with their own location. The operator of the vehicle benefits by knowing the relative locations of the emergency vehicles when they cannot be seen.

Abstract: A system for simultaneously displaying the locations of all nearby emergency vehicles onto the same moving map as the current location of another vehicle is described. Each emergency vehicle receives location data from a GPS receiver and broadcasts the location data using a Bluetooth or other transmitter. Other vehicles receive location data corresponding to their own locations using their own GPS receivers and each displays their own location onto their own moving map display in the usual manner. Additionally, the other vehicles also have Bluetooth or other receivers which receive the local broadcasts containing emergency vehicle locations and display the locations of all emergency vehicles simultaneously with their own location. The operator of the vehicle benefits by knowing the relative locations of the emergency vehicles when they cannot be seen. Some emergency vehicle operators may optionally choose to not broadcast their location data under certain circumstances.