THE INTERNATIONAL ROAD ROUGHNESS EXPERIMENT. ESTABLISHING CORRELATION AND A CALIBRATION STANDARD FOR MEASUREMENTS

The International Road Roughness Experiment (IRRE) covered two categories of instruments, profilometers and response type road roughness measuring systems (RTRRMs). The analyses demonstrated a good correlation between the RTRRMs and between the RTRMMs and profilometer records, and showed that they could all be calibrated to a single roughness scale without compromising their accuracy. Thus, all the instruments tested will give outputs which are sufficiently accurate and reproducible for comparative evaluation, but will need to be correlated to some given standard to ensure transferability and consistency over time. A large array of standard Indices were evaluated, some based purely on the geometric characteristics of the road profile, some based on simulation of the road profile - vehicle interaction, and some based on spectral analysis of the roughness recorder output. These analyses, which also include measurement travelling speed are described in the text, and elaborated in the Appendices.

• Corporate Authors:

  World Bank

  1818 H Street, NW
  Washington, DC  United States  20433
• Authors:
  • SAYERS, M W
  • Gillespie, T D
  • Queiroz, A V
• Publication Date: 1986

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 453 p.

Subject/Index Terms

• TRT Terms: Accuracy; Calibration; Correlation analysis; Measuring instruments; Profilometers; Roughness; Standards
• 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: 00495304
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-039 586
• Files: HSL, TRIS, USDOT
• Created Date: Jul 31 1990 12:00AM