Method and system for automatically activating a warning device on a train

  • US 6,609,049 B1
  • Filed: 07/01/2002
  • Issued: 08/19/2003
  • Est. Priority Date: 07/01/2002
  • Status: Active Grant
First Claim
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1. A computerized method for activating a warning device on a train at a location comprising the steps of:

  • maintaining a database of locations at which a warning device must be activated and corresponding regulations concerning activation of the warning device;

    obtaining a position of a train and a speed of the train from a positioning system;

    selecting a next upcoming location from among the locations in the database based on the speed and the position;

    determining a point at which to activate the warning device in compliance with a regulation corresponding to the next upcoming location; and

    activating the warning device at the point.

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