Communications: electrical – Override of traffic control indicator by command transmitter
Patent
1997-07-30
1999-11-02
Hofsass, Jeffery A.
Communications: electrical
Override of traffic control indicator by command transmitter
340902, 340907, 340917, G08G 107
Patent
active
059778830
ABSTRACT:
A new Traffic Light Control Apparatus for Emergency Vehicles for enabling control of a plurality of traffic signal lights disposed at a controlled intersection by an operator of an emergency vehicle and for disabling a conventional traffic signal light controller used for controlling the operation of the traffic signal lights. The inventive device includes a relay for disconnecting the conventional traffic signal light controller in response to a disconnect signal, a signal encoder disposed in the emergency vehicle for generating a plurality of signals, a transmitter for transmitting the signals, a data receiver disposed at the controlled intersection for receiving and decoding the signals and generating a plurality of input signals and for generating the disconnect signal, a state machine for accepting the input signals, for generating a plurality of state signals and for generating a plurality of output signals dependent upon the input signals and state signals, and a plurality of relays for energizing the traffic lights responsive to the output signals. An audible alarm located at the controlled intersection is activatable by the operator of the emergency vehicle.
REFERENCES:
patent: 3881169 (1975-04-01), Malach
patent: 4135144 (1979-01-01), Elmasian
patent: 4223295 (1980-09-01), Bonner et al.
patent: 4228419 (1980-10-01), Anderson
patent: 4704610 (1987-11-01), Smith et al.
patent: 4775865 (1988-10-01), Smith et al.
patent: 4914434 (1990-04-01), Morgan et al.
Leonard Roger D.
Leonard William H.
Hofsass Jeffery A.
Trieu Van T.
LandOfFree
Traffic light control apparatus for emergency vehicles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Traffic light control apparatus for emergency vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Traffic light control apparatus for emergency vehicles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2141164