Patent ID: 9254781
Filing Date: 2016-02-09
CPC Classification: B60Q,G08B,G08G

Claim Text:
1. An emergency vehicle warning device comprising: a transmitter in an emergency vehicle comprising a GPS navigation unit to manage and track warning units along a route of the emergency vehicle and to transmit warning signals by means of low Earth orbiting satellites to specific warning units at specific intersections along the route; a receiver at each of the warning units electrically connected to an antenna, the receiver being electrically connected to a control circuitry to receive warning signals, which are transmitted by the emergency vehicle using low Earth orbit satellites, and decode and process received signals; and a warning element affixed to the exterior of a water-proof housing of each warning unit and electrically connected to an output of the control circuitry; wherein the warning element of each warning unit, when receiving the transmitted warning signals specified by the emergency vehicle, activate differing light colors or sound frequencies or both, to indicate to approaching vehicle drives the distance categories of the approaching emergency vehicle.