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Collision avoidance using GPS device and train proximity detector

  • US 6,345,233 B1
  • Filed: 06/16/2000
  • Issued: 02/05/2002
  • Est. Priority Date: 08/18/1997
  • Status: Expired due to Fees
First Claim
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1. A train collision avoidance system, comprising:

  • a data base storing train grade crossing data identifying coordinates where a railroad track intersects with a road and for each train grade crossing data stored, storing in association therewith road heading data indicating the heading of roads intersecting respective railroad tracks at the grade crossings;

    a processor programmed to receive GPS vehicle location data that identifies a location of a vehicle, and programmed to use said GPS vehicle location data and said train grade crossing data to determine if the vehicle is within a predefined distance from a grade crossing;

    said processor being programmed to correlate the heading data of a road with a heading of the road vehicle; and

    said processor is programmed to provide a sensory indication when the vehicle is within the predefined distance from the grade crossing and when the road vehicle is on a road that intersects with the grade crossing.

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