55 MPH--HOW ARE WE DOING?

The study by the American Association of State Highway and Transportation Officials which collected and analyzed traffic data with respect to the impact of the national speed limit, included data on speeds, vehicle miles of travel and fatalities from the 48 contigous states and the District of Columbia. The data generally covered the first six months of 1974. Typical urban rural freeway speed distribution curves are discussed. Vehicle miles of travel and fatalities decreased in urban and rural areas in the first half of 1974. The report notes that decreased travel and changes in location or types of travel was not responsible for the main share of reduction in fatalities. Studies showed that the 55 mph speed limit would have saved about 5 billion or more gallons of fuel in 1974. Recommendations developed by the study committee relate to the authority for imposition of speed limits, educational programs, evaluation of effects of recommendations, the publication of desirable speed characteristics and the maintenance of current design speeds and design standards. Nationwide results for 1974, California results for 1975 and federal compliance requirements for the 55 mph speed limit are outlined.

  • Supplemental Notes:
    • Proceedings of the 45th Annual Meeting held in Seattle, Washington, August 17-21, 1975.
  • Corporate Authors:

    Institute of Traffic Engineers

    2029 K Street, NW
    Washington, DC    20006
  • Authors:
    • Estep, A C
    • Smith, R N
  • Publication Date: 1975-8

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00128814
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 29 1976 12:00AM