Traffic light control apparatus for emergency vehicles
First Claim
1. A traffic 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 comprising:
- a relay means for disconnecting the conventional traffic signal light controller, the relay means being responsive to a disconnect signal;
a directional compass operable to generate a plurality of directional signals representative of the emergency vehicle'"'"'s direction of travel in response to the vehicles direction of travel, the directional compass being disposed on the emergency vehicle;
a transmitter means for transmitting the directional signals, the transmitter means being operatively connected to the directional compass and disposed on the emergency vehicle;
a data receiver means for receiving and decoding the directional signals, the data receiver means being disposed at the controlled intersection;
a state machine means for accepting the decoded directional signals, for generating a plurality of state signals, for generating a plurality of output signals dependent upon the decoded directional signals and the state signals, and for generating the disconnect signal; and
a plurality of relay means for energizing the traffic lights responsive to the output signals.
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Accused Products
Abstract
A 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 device includes a relay for disconnecting the conventional traffic signal light controller in response to a disconnect signal, a directional compass disposed in the emergency vehicle for generating a plurality of directional signals, a transmitter for transmitting the directional signals, a data receiver disposed at the controlled intersection for receiving and decoding the directional signals and generating a plurality of input signals, a state machine for accepting the input signals, for generating a plurality of state signals, for generating a plurality of output signals dependent upon the input signals and state signals, and for generating the disconnect signal, 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.
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Citations
4 Claims
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1. A traffic 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 comprising:
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a relay means for disconnecting the conventional traffic signal light controller, the relay means being responsive to a disconnect signal; a directional compass operable to generate a plurality of directional signals representative of the emergency vehicle'"'"'s direction of travel in response to the vehicles direction of travel, the directional compass being disposed on the emergency vehicle; a transmitter means for transmitting the directional signals, the transmitter means being operatively connected to the directional compass and disposed on the emergency vehicle; a data receiver means for receiving and decoding the directional signals, the data receiver means being disposed at the controlled intersection; a state machine means for accepting the decoded directional signals, for generating a plurality of state signals, for generating a plurality of output signals dependent upon the decoded directional signals and the state signals, and for generating the disconnect signal; and a plurality of relay means for energizing the traffic lights responsive to the output signals. - View Dependent Claims (2, 3, 4)
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Specification