SPACE-INTERVAL DRIVER'S VIGILANCE DEVICE

The Swiss-developed safety control apparatus operates on a distance interval, and therefore gives the same factor of safety irrespective of the locomotive speed, whereas the more common system based on a time interval does not achieve this feature. The effect of the new apparatus is basically the same as the previous systems, i.e., following the incapacity for duty of the driver, a warning is sounded in the cab and if no action is taken by the driver the traction motors are switched off and the brakes applied. A diagram showing the mechanical and electrical circuits of the safety device is given. Also shown is part of a diagram of the run-down on the safety apparatus expressed in locomotive miles travelled.

• Corporate Authors:

  Temple Press Limited

  161-166 Fleet Street
  Longon EC4,   England 
• Publication Date: 1955-9-16

Media Info

• Features: Figures;
• Pagination: p. 333-334
• Serial:
  • RAILWAY GAZETTE
  • Volume: 103

Subject/Index Terms

• TRT Terms: Automatic train protection; Cab signals; Control systems; Safety; Technology
• Geographic Terms: Switzerland
• Subject Areas: Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00039651
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM