Statistical analysis of tire treadwear data

Details

• Creators:
  Yarmus, J. ; Walter, Robert ; Mengert, Peter
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.)
• Subject/TRT Terms:
  Regression Analysis Statistical Analysis Tire Treads
• Publication/ Report Number:
  DOT-TSC-NHTSA-85-2 ; DOT-HS-806-743
• Resource Type:
  Research Paper
• OCLC Number:
  12349808
• Edition:
  FINAL REPORT; August 1982 - April 1984
• Corporate Publisher:
  United States. National Highway Traffic Safety Administration
• NTL Classification:
  NTL-SAFETY AND SECURITY-SAFETY AND SECURITY ; NTL-SAFETY AND SECURITY-Human Factors
• Abstract:
  This report describes the results of a statistical analysis of the treadwear
  
  variability of radial tires subjected to the Uniform Tire Quality Grading (UTQG)
  
  standard. Because unexplained variability in the treadwear portion of the standard
  
  could lead to the misgrading of tires and provide false information to the
  
  consumer, the National Highway Traffic Safety Administration (NHTSA) had
  
  temporarily suspended the treadwear test. This report documents NHTSA's efforts
  
  to determine and eliminate sources of this variability.
  
  Data analyzed in this report were obtained from UTQG compliance tests performed
  
  at the San Angelo, TX test track, and from various tire manufacturers. Both aggregate
  
  and disaggregate regression analyses, as well as an analysis of variance, were
  
  performed. From these analyses, it is concluded that NHTSA should standardize the
  
  tire grade assignment procedure to ensure the true precision of the UTQG test. It is
  
  proposed that such standardization be accomplished either by assigning numerical grades
  
  with a given error range, or by assigning letter grades reflecting a range of grades.
  
  
• Format:
  PDF
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha256:9d61e3ec98604fea696d443b92328daeaedc2a4afba40abdc2c661468d4021d9
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/5843/dot_5843_DS1.pdf
• File Type:
  [PDF - 3.28 MB ]