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Method and apparatus for providing enhanced vehicle detection

  • US 6,519,512 B1
  • Filed: 11/28/2001
  • Issued: 02/11/2003
  • Est. Priority Date: 11/28/2001
  • Status: Expired due to Fees
First Claim
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1. In a locomotive having a train whistle adapted for sounding a warning signal on occasion of the locomotive approaching a heightened alert area, a method comprising:

  • monitoring operation of the train whistle;

    automatically, upon detecting operation of the train whistle, transmitting a supplemental warning signal to one or more prospective receiving devices.

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