Improving wet pavement traction by grooving highway surfaces has increased steadily since its introduction more than 15 years ago. California is a major proponent of the practice, using predominantly longitudinal rather than transverse grooving. Reductions in wet skid accidents of 85% in 14 different locations near Los Angeles are reported; earlier, a 75% reduction overall based on 77 locations in 13 states was noted. Though the reduction of wet skid accidents is desirable, the grooving of pavements produces mixed blessings. The grooves interact with the tread of tires to produce small lateral motions which are transmitted to the vehicle. The effects of these grooves on vehicles are related to their tires; specifically, to the tread configuration. The response for a given vehicle could range from "barely noticeable" to "very objectionable" depending on the tires. While the coincidence of tread groove spacing and road groove spacing is of paramount importance, tire construction, fabrics, and materials are less significant and inflation pressure and speed have little effect.

Media Info

  • Pagination: p. 50-52
  • Serial:
    • Automotive Engineering
    • Volume: 85
    • Issue Number: 10
    • Publisher: Society of Automotive Engineers (SAE)
    • ISSN: 0098-2571

Subject/Index Terms

Filing Info

  • Accession Number: 00173962
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jun 14 1978 12:00AM