An emergency vehicle alert system includes a first GPS receiving unit that
is provided on the emergency vehicle and that determines emergency
vehicle location information of the emergency vehicle. The system also
includes a radio-wave transmitter unit that is provided on the emergency
vehicle and that transmits the emergency vehicle location information by
way of an emergency vehicle location signal. The system further includes
a second GPS receiving unit that is provided on the motor vehicle and
that determines vehicle location information of the motor vehicle. The
system also includes a radio-wave receiver unit that is provided on the
motor vehicle and that receives the emergency location signal output by
the radio-wave transmitter unit of the emergency vehicle. The system
further includes a map display that displays, on a map, a current
location of the motor vehicle and a current location of the emergency
vehicle. The emergency vehicle is shown as an icon on the map, which has
a different visual characteristic depending on the position of the
emergency vehicle with respect to the motor vehicle.