Refinement of Measurement Techniques of Road Profile and International Roughness Index (IRI) to Support the KDOT Pavement Management System (PMS) Annual Road-Condition Survey Research [Summary]

Details

• Creators:
  Dyer, Stephen ; Boyd, Ryan ; Dyer, Justin
• Corporate Creators:
  Kansas State University. Dept. of Civil Engineering
• Corporate Contributors:
  Kansas. Dept. of Transportation. Bureau of Materials & Research
• Subject/TRT Terms:
  • Instruments for measuring roughness
  • Roughness
  • Pavement management systems
  • Road materials
  • Condition surveys
  • Recommendations
  • Simulation
  • Software
  • Inertial profilers
  • Repeatability
  More +
• Publication/ Report Number:
  KSU-99-7
• Resource Type:
  Brief
• Geographical Coverage:
  United States ; Kansas
• Edition:
  Summary Report
• Corporate Publisher:
  Kansas. Dept. of Transportation
• Description:
  The standards for instrumentation used to measure and reduce road profiles are not sufficiently defined to produce a highly repeatable measure of road roughness such as the International Roughness Index (IRI). According to KDOT, estimates from oversampled data from its spring 1997 road condition survey show the variability of the measure to be on the order of 15% (one standard deviation), whereas the calibration data would indicate an expected variability of less than 2%. The source of the variation is not known. It could be equipment malfunctions, natural variability of the road surface, or some other factor(s).
• Format:
  PDF
• Funding:
  C1157
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/38896/dot_38896_DS1.pdf
• File Type:
  [PDF - 62.45 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:cebe413b2f351e8ee77c2ee8a04beee50c9b6f8e822140465ad2f7276c777600