Patent ID: 6700506
Filing Date: 2004-03-02
Classification: G08G

Abstract:
A vehicle notification system comprising:at least one vehicles, a vehicle transmission apparatus on each of the at least one vehicle such that the vehicle transmission apparatus determines the vehicle location by GPS and broadcasts a radio frequency signal including vehicle identification information and vehicle location as determined by GPS; wherein said transmission apparatus for each of the at least one vehicle comprises a central processing unit (CPU), a transmission module, a GPS device, and at least one antenna, where the GPS device calculates the vehicle location using a plurality of global positioning satellite signals, the CPU generates a signal comprising vehicle identification information and vehicle location and the transmission module emits a radio frequency signal comprising the CPU generated signal; and a plurality of receiving units, each of said plurality of receiving units being capable of providing a notification that a specified vehicle is approaching a given location along a route for the specified vehicle, said each of the plurality of receiving units comprising a receiver module, and a CPU, wherein said receiving unit receives a RF signal, identifies the RP signal that corresponds to that being transmitted by the transmission apparatus for the specified vehicle, calculates the distance between the receiving unit and the specified vehicle with GPS determined locations included with the received RF signal from the specified vehicle and provides one of a distance indication or an alert signal as the notification of arrival of the specified vehicle, the distance indication being representative of the calculated distance and the alert signal is provided when the calculated distance is less than a threshold distance.