Verification of Rut Depth Collected with the INO Laser Rut Measurement System (LRMS)

Pavement rutting can be an indicator that a section of roadway is in need of repair or replacement. It can also become a hazard to drivers, causing loss of control or hydroplaning when water accumulates. To better monitor pavement conditions throughout the state, the Ohio Department of Transportation (ODOT) purchased two road profilers with an INO Laser Rut Measurement System (LRMS). The vehicle mounted systems provide ODOT pavement condition raters with a faster and safer method for evaluating pavement conditions. This study was intended to evaluate the accuracy, precision, and repeatability of the LRMS and determine the correlation between manually collected data and data collected using the LRMS. The system’s performance was evaluated by collecting rut measurements over two sections of pavement using the LRMS, the straight edge method, and a mechanical profiling system developed by the Ohio Research Institute for Transportation and the Environment (ORITE) and comparing results. The study showed that the LRMS produces accurate and repeatable results that are similar to those produced with a straight edge or profilometer. Minor adjustments to the Pavement Condition Rating (PCR) system are needed, however, to ensure that scores properly represent the condition of the pavement. A range of 5-25% is recommended for the “occasional” extent classification when the LRMS is used.

• Record URL:
  http://www.dot.state.oh.us/Divisions/Planning/SPR/Research/reportsandplans/Reports/2011/Pavements/134515_FR.pdf
• 
• Summary URL:
  http://worldcat.org/oclc/781714370/viewonline
• Corporate Authors:

  Ohio University, Athens

  Ohio Research Institute for Transportation and the Environment
  141 Stocker Engineering and Technology Center
  Athens, OH  United States  45701-2979

  Ohio Department of Transportation

  Innovation, Research, and implementation Section, 1980 West Broad Street
  Columbus, OH  United States  43223

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Hoffman, Bradley R
  • Sargand, Shad M
• Publication Date: 2011-10-28

Language

• English

Media Info

• Media Type: Web
• Edition: Student Study
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 84p

Subject/Index Terms

• TRT Terms: Accuracy; Condition surveys; Lasers; Measurement; Ruts (Pavements); Rutting
• Uncontrolled Terms: Laser road profilers; Pavement condition rating; Repeatability; Rut depth
• Subject Areas: Highways; Maintenance and Preservation; Pavements; I23: Properties of Road Surfaces; I60: Maintenance;

Filing Info

• Accession Number: 01368691
• Record Type: Publication
• Report/Paper Numbers: FHWA/OH-2011/18
• Contract Numbers: SJN: 134515, Agreement No. 23585
• Files: TRIS, USDOT, STATEDOT
• Created Date: Apr 26 2012 4:11PM