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Cellular based traffic sensor system

  • US 5,559,864 A
  • Filed: 06/05/1995
  • Issued: 09/24/1996
  • Est. Priority Date: 03/05/1993
  • Status: Expired due to Term
First Claim
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1. A method for providing vehicular traffic information, comprising the steps of:

  • monitoring signals on control and voice channels of a cellular telephone system by means of a plurality of receivers tuneable to a desired control or voice channel;

    analyzing the signals monitored on the control and voice channels of the cellular telephone system for recognition of an emergency, the steps of analyzing the signals including;

    detecting a preselected signal within the signals monitored on the control channels;

    monitoring a voice channel for a preselected signal for key words indicating an emergency;

    classifying the emergency in response to the detected key words; and

    generating vehicular traffic reports in response to analysis of the signals monitored on the control and voice channels.

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