Communications: electrical – External condition vehicle-mounted indicator or alarm
Patent
1994-11-29
1997-06-03
Swarthout, Brent A.
Communications: electrical
External condition vehicle-mounted indicator or alarm
340905, 340906, G08G 100
Patent
active
056359209
ABSTRACT:
A system and method for pre-warning a driver of a vehicle when the vehicle is approaching a traffic light or warning sign. Transmitters of highly directional energy are installed at the traffic lights and/or signs while receivers for this radiant energy are installed on each vehicle. False warnings are avoided by transmitting at least two simultaneous coded signals from the traffic light/sign. A first signal, called a direction signal, indicates the presence of a light/sign while a second signal, called a status signal, indicates the status of the traffic light/sign, e.g. red, yellow, green, "Railroad Crossing", etc. The two signals may be transmitted using two different kinds of radiant energy, e.g. infrared and laser beams.
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Cope John E.
Pogue J. B.
Cope John E.
Greigg Edwin E.
Greigg Ronald E.
Pogue J. B.
Swarthout Brent A.
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