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Traffic alert warning system and method for alerting vehicle operators of road conditions

  • US 5,815,802 A
  • Filed: 07/16/1996
  • Issued: 09/29/1998
  • Est. Priority Date: 07/16/1996
  • Status: Expired due to Fees
First Claim
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1. A traffic alert warning system operable in communication channels operating at different frequencies, comprising:

  • a storage unit for storing a road condition message;

    means for monitoring a first of the communication channels and producing first channel signals indicative thereof;

    means responsive to the first channel signals for generating an activity level signal representative of the communication activity of the first communication channel;

    means for generating a first reference activity signal indicative of the activity level of the first channel over a predetermined time period;

    means for deriving an availability signal indicative of the availability of the first communication channel for transmitting the road condition message; and

    means responsive to the availability signal for enabling transmission of the road condition message in the storage unit.

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