OBTAINING SKID NUMBER AT ANY SPEED FROM TEST AT SINGLE SPEED

This paper reports the results of a set of tests from New York, Pennsylvania, Texas, and Florida that were used to correlate skid number (SN) measurements made with ASTM ribbed and blank tires with SN data recorded at any speed (in other words, the calculation of SN at any speed from the determination of the SN/zero speed intercept and percent normalized gradient). Correlations were made with actual data at three or four speeds. Similarly, SN/zero speed intercept and percent normalized gradient were determined from transient tests of a ribbed-tire run at a single speed, and these results were correlated with the actual speed data. It was found that a transient skid test made with a ribbed tire at 40 or 50 mph, or a locked-wheel test with both the ribbed and blank tire at 40 mph, produced excellent results. SN could be calculated over a range of 20 to 60 mph with a correlation better than 0.96 and as high as 0.99.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1988/1196/1196-030.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=OBTAINING+SKID+NUMBER+AT+ANY+SPEED+FROM+TEST+AT+SINGLE+SPEED&author=J.+Wambold&publication_year=1988
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309047714
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1196, Pavement Evaluation and Rehabilitation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Wambold, James C
• Publication Date: 1988

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 300-305
• Monograph Title: Pavement evaluation and rehabilitation
• Serial:
  • Transportation Research Record
  • Issue Number: 1196
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Correlation analysis; Measurement; Skidding; Speed
• Uncontrolled Terms: Skid number
• Old TRIS Terms: Test results
• Subject Areas: Data and Information Technology; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00490170
• Record Type: Publication
• ISBN: 0309047714
• Files: TRIS, TRB
• Created Date: Dec 31 1989 12:00AM