Emergency vehicle alert system

Details Emergency vehicle alert system Emergency vehicle alert system

1992-03-17

1994-04-26

Williams, Hezron E.

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in another vehicle

340901, 340903, 340436, G08G 700

Patent

active

053070607

ABSTRACT:
An emergency vehicle alert system provides a transceiver for use in emergency vehicles and a receiver for use in non-emergency vehicles. The transceiver is operative in either a receive mode or a transceive mode at the user's choice. In the transceive mode, the transceiver alternates between emergency vehicle alert signal transmission and a receiving function in which the presence of other emergency vehicles may be detected. In the receive mode, the transceiver responds directly to received emergency vehicle alert signals from other vehicles in the same manner as the standard receiving unit. The transceiver produces a signal having encoded information which identifies the emergency vehicle type. The receiver receives and processes the emergency vehicle alert signal to identify the presence of an emergency vehicle and the type of vehicle doing the transmitting.

REFERENCES:
patent: 2146724 (1949-02-01), Dunmore
patent: 3173137 (1965-03-01), Byrne
patent: 3233217 (1966-02-01), Bost, Jr.
patent: 3673560 (1972-06-01), Barsh
patent: 3760349 (1973-09-01), Keister
patent: 4241328 (1980-12-01), Lobe
patent: 4438429 (1984-03-01), Park
IEEE Standard Dictionary of Electrical & Electronics Terms, 3rd Ed., N.Y., 1984, p. 955.

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