The technical feasibility of detecting the approach of motor vehicles by seismic means was determined by the recording and analysis of road vibration, and verified by the construction of a seismic switch which was reliably triggered at a distance of 50 metres (164 ft) along the pavement by vehicles travelling at 50 km/h (30 mph).

  • Supplemental Notes:
    • See also report dated Jul 75, COM-75-11127.
  • Corporate Authors:

    National Bureau of Standards

    14th Between E Street and Constitution Avenue, NW
    Washington, DC  United States  20234

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Kenney, J M
  • Publication Date: 1976-5

Media Info

  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00167380
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-RD-76-161 Final Rpt., FCP 31I1-112
  • Contract Numbers: P.O. 4-1-0192
  • Files: NTIS, TRIS, USDOT
  • Created Date: Dec 27 1977 12:00AM