Norfolk and Western operates a Plasser EM-80 track geometry vehicle which is to cover mainline track three times annually and secondary lines and branches twice a year. The comprehensive real-time track geometry data is valuable for track maintenance planning and for producing systemwide information on track conditions. The two-axle self-propelled car has six special sensing axles which are actuated pneumatically for measuring track profile, gauge, alignment and surface. The on-board PDP-8 minicomputer not only analyzes test data for basic track characteristics but also produces limiting speeds for curves and index figures on track quality. Tolerances for each track geometry parameter are stored in the computer to produce exemptions printouts.

  • Availability:
  • Corporate Authors:

    Simmons-Boardman Publishing Corporation

    508 Birch Street
    Bristol, CT  United States  06010
  • Authors:
    • Middleton, W D
  • Publication Date: 1981-5

Media Info

  • Features: Photos;
  • Pagination: p. 49
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00334945
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 9 1981 12:00AM