Warning system for emergency vehicles

Details Warning system for emergency vehicles Warning system for emergency vehicles

1997-03-19

1999-03-30

Swarthout, Brent A.

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in another vehicle

340906, G08G 100

Patent

active

058894756

ABSTRACT:
A system for warning of an approaching emergency vehicle comprising of a transmitter, a receiver, an audio and visual indicator. The transmitter transmitting a broad ban of AM and FM frequencies that are broadcasted of a short range to audible warn vehicles and pedestrian through existing radios of an approaching emergency vehicle. The transmitter also sending a signal to the receiver having circuitry to activate and deactivate audible and visual warning indicators of an approaching emergency vehicle. The audible and visual indicators are normally affixed to typical traffic signal located at street intersections.

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patent: 5428544 (1995-06-01), Shyu
patent: 5539398 (1996-07-01), Hall et al.
patent: 5635921 (1997-06-01), Maxwell et al.

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