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Method and apparatus for uniform time warning of railroad trains

  • US 20020096605A1
  • Filed: 12/20/2001
  • Published: 07/25/2002
  • Est. Priority Date: 01/23/2001
  • Status: Active Grant
First Claim
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1. A system for controlling a train'"'"'s approach on a right-of-way to a grade crossing such that a uniform time warning is ensured comprising:

  • a communication based train control scheme including a computer, situated on the train;

    means situated at a wayside location for detecting the presence of the train at a first control point on the right-of-way and for determining the train'"'"'s speed thereat;

    means for activating the gate at the grade crossing responsive to the train being at a second control point on the right-of-way wherein the second control point is based on the determined speed such that a uniform time warning is provided.

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