Accuracy of Road Surface Profilers in TRUE Project: Experiment to Compare Test Methods for Surface Roughness Under Actual Road Environment

A number of surface roughness measuring devices has been introduced in Japan since the Road Bureau of Ministry of Land, Infrastructure, Transport and Tourism has issued a strategy for inspection of the whole road stock and has provided an implementation guide for evaluating roughness by means of the International Roughness Index (IRI) in 2013. Against this background, the specified nonprofit organization Pavement Diagnosis Researchers Group (PDRG) in Japan conducted the experiment to compare test methods for surface roughness under actual road environment (TRUE Project). Thirty-four devices including high- and low- speed profilers and response type systems participated in the first experiment of the project held at Hokkaido, Japan in 2014. This paper analyzes the accuracy of the high- and low speed profilers in terms of repeatability and reproducibility as well as portability for both IRI and profile measurements. The influence of operating speed on the measurements is also considered for the high-speed profilers. The final purpose of this study is to provide the essential information for associating different profilers so that profiler users and developers can assess the accuracy of each profiler to produce standard measures of roughness to interchange inspection results. For this purpose, the authors demonstrate a tolerance of the repeatability, reproducibility, and portability and the influence of operating speed for the high-speed profilers in respect to the IRI and profile measurements obtained in the experiment. The information described in this paper is of benefit to profiler developers as well as users for development and improvement of their profilers.

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• Supplemental Notes:
  • This paper was sponsored by TRB committee AFD90 Standing Committee on Pavement Surface Properties and Vehicle Interaction.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Tomiyama, Kazuya
  • Nakamura, Hiroyasu
  • Mashito, Hiroyuki
  • Jomoto, Masakazu
  • Watanabe, Kazuhiro
• Conference:
  • Transportation Research Board 96th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2017-1-8 to 2017-1-12
• Date: 2017

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 15p
• Monograph Title: TRB 96th Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Measuring instruments; Operating speed; Pavements; Roughness
• Identifier Terms: International Roughness Index
• Uncontrolled Terms: High speed profilers; Portability; Repeatability; Reproducibility; Road surface profilers
• Geographic Terms: Hokkaido (Japan); Japan
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01624305
• Record Type: Publication
• Report/Paper Numbers: 17-03150
• Files: PRP, TRIS, TRB, ATRI
• Created Date: Jan 29 2017 5:34PM