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Railway signalling system

  • US 5,437,422 A
  • Filed: 02/09/1993
  • Issued: 08/01/1995
  • Est. Priority Date: 02/11/1992
  • Status: Expired due to Term
First Claim
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1. A railway signalling system comprising:

  • control means for controlling the movements of railway vehicles on a railway track, including storage means for storing data defining physical characteristics of the railway track and the locations of the vehicles, first processing means for processing the data stored in the storage means to determine permissible movements of the vehicles, and first communication means for transmitting to the vehicles movement data defining the vehicles'"'"' permissible movements; and

    protection means carried by at least one of the vehicles for causing the vehicle to move under the control of the control means, comprising second communication means for receiving the said movement data relating to the vehicle, second storage means for storing geographical data defining physical characteristics of the railway track, second processing means for processing the movement data in dependence on the geographical data to determine a maximum safe operating speed for the vehicle, and operation means for controlling the vehicle to travel at no more than the determined maximum safe operating speed.

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