A correlation has been established between skid resistance measurements with the newly adopted test tire (ASTM E501) and the previous standard test tire (ASTM E249). The correlation is based on a large scale field test program, supported by laboratory tests on a high speed facility. Both tires respond in a similar way to changing test conditions, but tire E501 is expected to measure about 4 percent higher than tire E249 under standard test conditions at 40 mph. Prediction equations and the associated estimated variances are given for an all-inclusive correlation, as well as separate equations for three speeds (20, 40, and 60 mph) and separate equations for each of the four pavements used in this program. Limited tests on dry pavements also show generally higher readings with tire E501. /FHWA/

  • Corporate Authors:

    Federal Highway Administration

    Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Hegmon, R R
    • Weiner, S
    • Runt, L J
  • Publication Date: 1975-4

Media Info

  • Pagination: 172 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00132991
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-75- 88 Final Rpt., FCP 31H3-274
  • Files: TRIS, USDOT
  • Created Date: Jun 5 1976 12:00AM