TRAIN PERFORMANCE CALCULATOR (TPC)

Punch cards are prepared containing track characteristics (elevations, curves, speed restrictions and stops) and train specifications (length, weight, tractive effort, resistances, etc.) These cards form the input to the computer program which performs a step by step solution of the equations governing the train's progress along the track, showing distance, time, speed, fuel consumption, etc. The train is assumed to be driven at full power unless either travelling at the speed limit or braking to reduce speed. In other words, the TPC gives the minimum running time. Up to 30 trains may be run simultaneously over the track on each run. A variety of output reports, including a graphical output, can be obtained. The program, and its predecessor, have been in use on a number of railroads since 1960. The coefficients of the car resistance, tractive effort and fuel consumption curves are specified as input, and different sets of coefficients can apply to different speed ranges.

  • Supplemental Notes:
    • Direct requests to Manager, Operational Research, Canadian National. Publications: Charles Sankey: "Train Performance Calculator for the IBM 7070, CNR report, Sept. 1963.
  • Corporate Authors:

    Canadian National Railways

    935 la Gauchetiere Street, West
    Montreal, Quebec H3C 3N4,   Canada 
  • Publication Date: 1969-6

Subject/Index Terms

Filing Info

  • Accession Number: 00131920
  • Record Type: Publication
  • Source Agency: Canadian National Railways
  • Files: TRIS
  • Created Date: Jun 5 1976 12:00AM