This report is a Joint Winter Runway Friction Measurement Project (JWRFMP) report updating the research and data collection up through the year 2002 (the seventh year of the project) as related to the capability of a runway surface to provide tire braking action during winter operations. The project was led by Transport Canada and the National Aeronautics and Space Administration, with support from National Research Council Canada, the U.S. Federal Aviation Administration, the Norwegian Air Traffic and Airport Management, France's Direction gnrale de l'aviation civile, and organizations and equipment manufacturers from Austria, Canada, France, Germany, Norway, Scotland, Sweden, Switzerland, and the United States. The data was used to develop the International Runway Friction Index (IRFI) and the correlation constants were calculated for devices tested in the 1997-1998 test season (TP 13836E). The constants were calculated by combining the two years of data. However, in 2000, it was established that not only does a calibration not apply across similar types of devices, it changes from year to year for a particular device. Thus, the correlation constants are given on a year-by-year basis up to and including 2002. During the year 2000, the ASTM E 2100 standard "The International Runway Friction Index", IRFI, was issued. The use of the IRFI reduced the standard error from as high as 0.2 (without IRFI), down to an average under 0.05.


  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 68 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00988830
  • Record Type: Publication
  • Report/Paper Numbers: TP 14193E, Final Report
  • Contract Numbers: T8200-022539/001/MTB
  • Files: TRIS
  • Created Date: Apr 18 2005 12:00AM