THE SJ SYSTEM FOR CAR TRACING AND OPERATING CONTROL

The Swedish State Railways have since August 1966 in operation a computerized system which is: (1) a full scale trial system intended to facilitate car tracing and also; and (2) an information system for the actual decisions and for future development. The basic input to the system are the train consists reported over the SJ teletype network and fed by way of paper tape to a computer of the type IBM 360/30. The information updates a card-file stored on disc memories. From this card-file information about the geographical position and actual task of every freight car in Sweden can be obtained. Every day information about 300-400 is distributed. This type of information can be given in a more sophisticated way for any number of cars with certain qualities in common (category, destination arrival time etc.). It can also be transformed to a daily report about the utilization of standard cars within the different traffic areas as a basis for distribution of empties. According to European rules for international traffic freight cars should be given periodical maintenance, in general every fourth year. Since December 1969 the ordering of freight cars to workshops for maintenance in Sweden is done automatically. This routine has also made it possible to distinguish certain car categories which can be given longer periods between overhauls. All information collected in the system is stored in such a way that it can be computed statistically later. Thus a data bank has been created that can produce information on demand regarding: (a) traffic flows; (b) turn round times; (c) mileage and production of different car types; (d) car utilization within the traffic areas; and (e) train utilization. This routine is also used to produce the basic information for the per diem calculations.

• Corporate Authors:

  International Railway Congress Association

  17-21 rue de Louvrain
  1000 Brussels,   Belgium 
• Authors:
  • Rosqvist, G
• Publication Date: 1973-9

Media Info

• Pagination: 3 p.
• Serial:
  • RAIL INTERNATIONAL
  • Issue Number: 1

Subject/Index Terms

• TRT Terms: Car tracing (Railroads); Car utilization (Railroads); Contract rates; Management information systems
• Identifier Terms: Statens Jarnvagar
• Old TRIS Terms: Car tracing; Per diem rates
• Subject Areas: Data and Information Technology; Railroads;

Filing Info

• Accession Number: 00050682
• Record Type: Publication
• Source Agency: Rail International
• Files: TRIS
• Created Date: Feb 15 1974 12:00AM