Run-off-road accidents make up a substantial portion of the overall highway accident picture. Accident reports indicate that a large number of these run-off-road accidents are due to inattention or drowsiness. This study develops designs for shoulder rumble strips. Three different kinds of rumble strips are evaluated for their effectiveness in reducting the number of run-off-road accidents. An instrumented test car was driven over various configurations of rumble strips to collect data on sound, vibration, and car handling. This data was analyzed and the best design for general use was selected for the test installations. Trial installations were made at four locations. These locations were selected on the basis of run-off-road accident experience, ample shoulder width, and unchanging design. Accident data for each test installation together with adjacent control sections was analyzed on the basis of a one-year before period versus a one-year after period. The results were not conclusive in showing that rumble strips reduce the number of run-off-road accidents.

  • Supplemental Notes:
    • Conduated in cooperation with DOT, Federal Highway Administration.
  • Corporate Authors:

    California Department of Transportation

    Office of Traffic, 1120 N Street
    Sacramento, CA  United States  95814
  • Authors:
    • Tye, E J
  • Publication Date: 1976-2

Media Info

  • Pagination: 50 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00153887
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-CA-76-01 Final Rpt.
  • Contract Numbers: B-01-11 (7)
  • Created Date: Sep 20 1977 12:00AM