Transition from manual to automatic rutting measurements : effect on pavement serviceability index values.

Details

• Creators:
  Bandini, Paola ; Pham, Hung V.
• Corporate Creators:
  New Mexico State University. Civil, Agricultural, and Geological Engineering Dept
• Corporate Contributors:
  New Mexico. Dept. of Transportation. Research Bureau ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Measurement Ruts (Pavements) Rutting Of Roads--Evaluation
• Publication/ Report Number:
  NM 08SAF-02
• Resource Type:
  Tech Report
• Geographical Coverage:
  New Mexico
• Corporate Publisher:
  New Mexico. Dept. of Transportation. Research Bureau
• Abstract:
  The Pavement Serviceability Index (pSn is used by New Mexico Department of Transportation
  
  (NMDOT) to express the serviceability level of a pavement section at the network level. The PSI
  
  is calculated with distress ratings (including rutting) and roughness data. Currently, rut depth
  
  data collected with two NMDOT-owned 3-point profilometers are not used as an input in the
  
  calculation of PSI values. The main goal of this project was to develop and recommend a
  
  procedure to substitute automated rut depth for rutting ratings from manual surveys. For planning
  
  and reporting purposes, it is important for NMDOT to maintain the consistency of the methods
  
  and data used to calculate PSI values and to docwnent any change implemented so that
  
  comparisons of current and past conditions and performance evaluations of the network can be
  
  made. The transition from using manual survey ratings to automated rut depth measurements
  
  should introduce the smallest possible difference in the calculated PSI values and the overall
  
  condition rating of the highway network. Three procedures or approaches are presented and
  
  discussed. Regression analyses were applied to the rut depth and PSI data. Recommended
  
  Approach A proposed preserving the current PSI formulation and factors and converting the
  
  automated rut depth data into equivalent rutting ratings. Alternative Approach B proposed minor
  
  modifications to the PSI formulation. A third approach (Approach C) was considered and
  
  evaluated, but was not recommended. Results of the statistical tests performed on the data and
  
  results are also presented. The ratings from manual surveys and automated rut depth data were
  
  compared with detailed measurements of transverse profiles to evaluate the data from these two
  
  methods. This report includes an implementation plan for the recommended and alternative
  
  approaches.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:22dead9d0ba64012140b6b9266ba91e42265a6de0eee2b1b4c69ce8255c6656b
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18276/dot_18276_DS1.pdf
• File Type:
  [PDF - 52.11 MB ]