ANALYSIS OF ROAD PROFILES BY USE OF DIGITAL FILTERING

This paper discusses the use of digital filtering to analyze measured road profiles. Applications of road roughness analysis are given. The discussion of the signal processing operators emphasizes considerations, including pitfalls, that are particularly important. The purpose of filtering is to isolate, for further analysis, the roughness of a given type, e.g., that with 10 to 30-ft (3 to 9-m) wavelengths. Such analysis might include the calculation of measures of overall or average roughness and the most severe roughness in a road section. Both artificial and real test cases are given to compare and demonstrate the capabilities of selected filters. A particular type of filter is recommended on the basis of the test cases. Digital filter design by specification of the squared-magnitude function is emphasized. Selected results from a pilot study in which comparisons are made between hot-mixed asphalt concrete and surface-treated pavements are given to demonstrate the application of the suggested filter and roughness measures.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1976/584/584-004.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=ANALYSIS+OF+ROAD+PROFILES+BY+USE+OF+DIGITAL+FILTERING&author=H.+Williamson&publication_year=1976
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309024986
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Surface Properties- Vehicle Interaction. 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:
  • Williamson, Hugh J
• Discussers:
  • Quinn, B E
  • Brickman, Arthur D
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 37-54
• Monograph Title: Pavement Surface Properties and Vehicle Interaction
• Serial:
  • Transportation Research Record
  • Issue Number: 584
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt concrete; Digital computers; Hot mix asphalt; Paving; Roads; Roughness; Surface treating; Wavelength
• Uncontrolled Terms: Digital techniques; Road profile
• Old TRIS Terms: Hard surfacing
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00141415
• Record Type: Publication
• ISBN: 0309024986
• Report/Paper Numbers: Conf Paper
• Files: TRIS, TRB
• Created Date: Nov 3 1976 12:00AM