NORMALIZED PERCENT SKID GRADIENT ALGORITHM FOR COMPUTING THE SPEED DEPENDENCE OF SKID NUMBER, COMPUTER PROGRAM DOCUMENTATION

The normalized percent skid gradient program addresses the problem of assessing the change of skid number with respect to speed. The program uses skid number, measured at a single speed, in conjunction with a pavement texture measurement as the basis for determining skid numbers at various other speeds. Thus the program provides field personnel, who are responsible for collecting and maintaining inventories of skid number data, a means of reducing skid resistance testing from measurements at two or more speeds to testing at a single speed and collection of a pavement texture measurement. The specific function of the program is to provide skid number estimates at up to three additional speeds based on skid information at one speed together with a texture measurement. At present this is set up for bituminous pavements surveyed during the course of this study. In order to generalize the program's capability to other bases of pavement friction data and texture measurements, a number of supporting capabilities for data reduction, regression and correlation analyses, including evaluation of texture descriptors from profile data are available to the user. /FHWA/

  • Supplemental Notes:
    • The final report consists of four volumes: Summary Report (FHWA-RD-78-36), Technical Report (FHWA-RD-78-37), Appendices (FHWA-RD-78-38), and Computer Program Documentation (FHWA-RD-78-39). All reports are available from NTIS.
  • Corporate Authors:

    Ensco, Incorporated

    5400 Port Royal Road
    Springfield, VA  USA  22151
  • Authors:
    • Sutermeister, R E
  • Publication Date: 1977-11

Media Info

  • Pagination: p. 145

Subject/Index Terms

Filing Info

  • Accession Number: 00190060
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-78- 39 Final Rpt., FCP 35D4-052
  • Contract Numbers: DOT-FH-11-9117
  • Files: TRIS, USDOT
  • Created Date: May 26 1979 12:00AM