TRUCK SPEEDS ON GRADES IN CALIFORNIA

The speeds of more than 14,000 trucks and of more than 2,600 recreational vehicles, pickup trucks, vans, and other vehicles were measured on grades along rural freeways and expressways in California. The truck speed measurements included sustained speeds on grades, speeds while decelerating on grades, and speeds while accelerating on a -0.14 percent grade. The speeds of trucks on grades along rural freeways and expressways were much faster than the truck speeds which for many years were recommended by the American Association of State Highway and Transportation Officials for highway design purposes. The speeds of trucks on grades along rural freeways and expressways were also much faster than the truck speeds presented in the Highway Capacity Manual. The average sustained speeds along grades of five-axle trucks (both trucks and truck combinations) are included in this report.

  • Corporate Authors:

    California Department of Transportation

    1120 N Street
    Sacramento, CA  United States  95814

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Ching, P Y
    • Rooney, F D
  • Publication Date: 1979-6

Media Info

  • Pagination: 66 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00302194
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-CA-TO-79-1 Final Rpt.
  • Contract Numbers: Item B-1-65
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Dec 19 1979 12:00AM