Non-contact skid resistance measurement : final report, December 2009.

Details

• Creators:
  Meegoda, Jay N.
• Corporate Creators:
  New Jersey Institute of Technology. Department of Civil Engineering
• Corporate Contributors:
  New Jersey. Dept. of Transportation. Division of Research and Technology ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Pavement Management Systems Pavements--Skid Resistance--New Jersey--Data Processing Pavements--Skid Resistance--Testing Skid Resistance Tests
• Publication/ Report Number:
  FHWA-NJ-2009-020
• Resource Type:
  Tech Report
• Geographical Coverage:
  New Jersey
• Edition:
  Final report; Jan. 2008-Dec. 2009.
• Corporate Publisher:
  New Jersey. Dept. of Transportation
• Abstract:
  In this research, a correlation between the SN40R collected by locked wheel skid tester and the
  
  texture data or Mean Profile Depth (MPD) collected by a vehicle mounted laser operating at highway
  
  speeds was developed. The proposed correlation between SN40R and MPD is positive for MPD values
  
  less than 0.75 mm to reach a peak SN40R value, then it becomes a negative correlation of decreasing
  
  SN40R values with increase in MPD values until the MPD values reached 1.15 mm, which was the
  
  maximum value measured in this research. However, the slope of the negative correlation becomes
  
  smaller with increasing MPD. It was also observed that there is significant data scatter for the MPD
  
  value of 0.8mm. The test result showed a similar trend for old asphalt pavements, but with lower SN40R
  
  values due to polishing of pavement micro-texture by traffic. Based on the comparison between old and
  
  new asphalt pavements, reduction coefficients, which is a functions of road treatment time and traffic
  
  volume was developed to account for the traffic polishing effect on micro-texture of pavement.
  
  This report also describes two field tests performed to validate the above correlation and
  
  development of an interface for the PMS to upload the predicted skid data from texture data obtained
  
  from high speed laser. During the field tests, MPD values and SN40R were collected by a vehicle
  
  mounted laser and a locked wheel skid trailer, respectively. Then the comparison between predicted
  
  SN40R by using the developed correlation between SN40R and MPD and measured SN40R are
  
  conducted. For the prediction of SN40R, reduction coefficient, which is a function of traffic volume and
  
  pavement age (treated or refurnished age), were used to take into account the polishing effect traffic on
  
  micro-texture of the pavements. The results show that the measured and predicted SN40R values
  
  match each other very well with the maximum variance between them less than 5. Based on the
  
  validated correlation between MPD and SN40R, an interface for the PMS was developed to extract and
  
  process MPD data collected by vehicle mounted laser and report predicted skid number to NJDOT
  
  pavement management system.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:bc5b9be701543360d86e16b9bde3c9d61bc67243b4ffa613d405b8beeab6e96f
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17679/dot_17679_DS1.pdf
• File Type:
  [PDF - 1.99 MB ]