CTC ON UNION IS COMPUTER CONTROLLED

A computer controlled centralized traffic control system has been in service for over seven years on the Union Railroad. "Advantages of computer control over conventional relay control have proved out in our system," reports William H. Martin, superintendent signals and telephones. "Speed of operation, flexibility, expandability, less maintenance and ease in making changes have been found to be true in our system. Over 30% of the controlled facilities have been re-arranged or added to since the system was placed in operation." All train movements (over 400 daily) are controlled from a route-control machine at Duquesne, Pa. The control machine is linked to a Honeywell DDP 124 computer, which in turn is linked to a Union Switch & Signal model 549 code system (operating at 400 bits/sec) reaching out to eight field locations.

• Corporate Authors:

  Simmons-Boardman Publishing Corporation

  P.O. Box 350
  Bristol, CT  United States  06010
• Publication Date: 1973-4

Media Info

• Pagination: p. 12-14
• Serial:
  • Railway System Controls
  • Volume: 4
  • Issue Number: 4
  • Publisher: Business Press International Limited

Subject/Index Terms

• TRT Terms: Centralized traffic control; Highway traffic control systems
• Old TRIS Terms: Computerized traffic systems
• Subject Areas: Operations and Traffic Management; Railroads;

Filing Info

• Accession Number: 00047970
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 4 1976 12:00AM