Certification of Inertial Profilers

State Highway Agencies track the roughness of their pavement network using the International Roughness Index (IRI). In addition, many state highway agencies use the IRI to judge the smoothness of new construction for construction acceptance. Data collected by an inertial profiler is used to compute the IRI. An inertial profiler must be certified to ensure that it obtains repeatable and accurate IRI values. Some highway agencies evaluate the repeatability and accuracy of profilers by using criteria established by the agency, while others use the procedures described in AASHTO standard R 56. This paper will present common procedures that are used to evaluate the repeatability and accuracy of inertial profilers, including the method specified in AASHTO R 56. Common errors that can cause a device to not meet the AASHTO R 56 criterion are also described. The height sensor types used in inertial profilers are single-spot lasers and line lasers, with single-spot lasers not being able to collect accurate data on longitudinally textured surfaces. The paper addresses how the data collected by a single spot-laser and a line laser compares with each other on various surface types.


  • English

Media Info

  • Media Type: Web
  • Pagination: pp 268-278
  • Monograph Title: Airfield and Highway Pavements 2017: Design, Construction, Evaluation, and Management of Pavements

Subject/Index Terms

Filing Info

  • Accession Number: 01685205
  • Record Type: Publication
  • ISBN: 9780784480922
  • Files: TRIS, ASCE
  • Created Date: Oct 4 2018 4:33PM