The wide gage investigation involved test measurements in the summer and winter months. The reasons for performing measurements by season was because experienced railroad engineers felt the phenomena of gage widening was accelerated during winter months. As reported in Volume I, permanent widening of gage occurs in the summer. Significantly, no appreciable permanent track deformation was found in periodic gage measurements at the test site between May (the installation of the test sections) and November of 1974. After a sufficient period of snow and subzero weather had passed, to assure that the ballast section had deep frost, the track dynamics instrumentation as described in Volume I was again set up for measurements. This report presents the results of this winter series of experiments.

  • Supplemental Notes:
    • An International Government-Industry Research Program on Track-Train Dynamics. Requests for this publication should be directed to J.G. Britton, Director of Operations, AAR.
  • Corporate Authors:

    Association of American Railroads

    50 F Street, NW
    Washington, DC  United States  20001-1564
  • Publication Date: 1975

Media Info

  • Features: Figures; Tables;
  • Pagination: 44 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00127712
  • Record Type: Publication
  • Report/Paper Numbers: AAR-R179
  • Files: TRIS
  • Created Date: Dec 3 1976 12:00AM