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Traffic monitoring system

  • US 5,935,190 A
  • Filed: 11/05/1997
  • Issued: 08/10/1999
  • Est. Priority Date: 06/01/1994
  • Status: Expired due to Term
First Claim
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1. A traffic monitoring system for monitoring speeds of moving vehicles, the traffic monitoring system comprising:

  • a housing;

    a Doppler radar transceiver, within the housing, for producing Doppler signals responsive to one or more moving vehicles in a radar beam;

    a digital computer connected to the Doppler radar transceiver, the digital computer including (a) a converter for transforming the Doppler signals from one or more moving vehicles in the radar beam into multiple-bit digital form signals, and (b) a processor that determines;

    (i) whether the Doppler signals were produced in response to more than one vehicle in the radar beam;

    (ii) the speed of a single vehicle corresponding to the Doppler signals and (iii) whether the single vehicle has violated a speed limit.

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