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Traffic light control apparatus for emergency vehicles

  • US 6,072,406 A
  • Filed: 06/28/1999
  • Issued: 06/06/2000
  • Est. Priority Date: 07/30/1997
  • Status: Expired due to Fees
First Claim
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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:

  • 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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