Higher wheel loads, tonnages and speeds, all of which increase the wear of switch points and frogs, and reduced budgets, which cause production maintenance forces to avoid them, have produced more pronounced deterioration of turnouts than of the general track structure. Railroads are undertaking rehabilitation programs and other measures to overcome what has become the weak link in track structures. Manufacturers are responding to trends to weld frogs and turnouts in welded rail territory. Manganese frogs for mainline use, longer switch-point rails and new guard rails are being introduced. Changes in design by Canadian Pacific and French National Railways are described. The Illinois Central Gulf's experience with dual-operator switch tampers is discussed. Finally, turnouts engineered to increase ride comfort, reduce maintenance and adapt easily to welded rail technology have been produced for the Taiwan Railway Administration and are seen as applicable in the U.S.

  • Availability:
  • Corporate Authors:

    Simmons-Boardman Publishing Corporation

    508 Birch Street
    Bristol, CT  United States  06010
  • Publication Date: 1977-6

Media Info

  • Features: Photos;
  • Pagination: p. 16-27
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00157504
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 4 1977 12:00AM