POTENTIAL MEANS OF COST REDUCTION IN GRADE CROSSING MOTORIST-WARNING CONTROL EQUIPMENT. VOLUME II. COMPARISON OF SOLID STATE AND RELAY DEVICES AND TECHNIQUES

Consideration is given to the properties of solid-state circuits, miniature relays and large gravity-operated relays when applied to control systems for grade crossings equipped with train-activated motorist warnings. Factors discussed include original cost and service-life cost, vulnerability to environment, reliability and fail-safety, power requirements, maintainability, complexity of tasks to be performed and economic scale.

  • Record URL:
  • Supplemental Notes:
    • See also Volume 1, PB-277946, RRIS 08 175477, Bulletin 7802.
  • Corporate Authors:

    Lowell University

    Lowell University Research Foundation
    Lowell, MA  United States  01854

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142

    Federal Railroad Administration

    Office of Research and Development, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Holmstrom, F Ross
  • Publication Date: 1977-12

Media Info

  • Pagination: 50 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00175478
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT-TSC-FRA-76-21-IIFinal Rpt., FRA/ORD-77/45.II
  • Contract Numbers: DOT-TSC-589
  • Files: NTIS, TRIS, USDOT
  • Created Date: May 31 1978 12:00AM