The status of three foreign rail technologies is analyzed in this the first of four semiannual reports. The three technologies are tilting car body mechanisms, pantographs, and passenger train brake systems. Tilting car bodies are used to increase train speed in curves while remaining within the safety requirements of overturning moment and the established levels of passenger comfort. Systems being developed in Europe and Canada are discussed. As train speeds increase in electrified corridors, power collection becomes a problem due to uneven track and catenary undulations. Slow response time due to pantograph mass is being overcome by staged pantographs where the final element is small and thus can respond to rapid changes in distance between the car roof and catenary. Two-stage pantographs and pantographs for tilting car bodies are discussed. Increasing train speeds on existing corridors requires improved braking systems so as not to exceed present signaling installations and corridor stopping distances. New concepts of brake systems in development are discussed.

  • Corporate Authors:

    Unified Industries, Incorporated

    205 South Whiting
    Alexandria, VA  United States  22304

    Federal Railroad Administration

    Office of Research and Development, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Dow, A L
  • Publication Date: 1977-10-25

Media Info

  • Pagination: 32 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00175266
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FRA/ORD-77/74
  • Contract Numbers: DOT-FR-74249
  • Files: NTIS, TRIS, USDOT
  • Created Date: May 18 1978 12:00AM