A COMPARATIVE STUDY OF MEASUREMENT STANDARDS FOR REGULATING MAXIMUM MOTORCYCLE NOISE EMISSION

This report presents a comparison between three methods for measurement of motorcycle noise emission, namely ECE Regulation 41, ECE Regulation 51 and a method specified by the United States Environmental Protection Agency. All the three methods specify a standard for measurement of noise both from vehicles in motion and stationary vehicles. The methods are compared by applying them to measurements on twelve motorcycles of different sizes. Two to three times more measurements than required by the standards were made. In addition, the complete tests for two motorcycles were repeated on six different occasions. This enabled an analysis of the errors inherent in each method; especially the random errors. Data on run-to-run variation in noise level, repeatability, correlation between the methods, motorcycle rankings by the methods and noise levels for the motorcycles are presented. There is a potential for improvements in some of the methods, and suggestions concerning this are given. (TRRL)

• Corporate Authors:

  Swedish National Road and Transport Research Institute (VTI)

  Linköping,   Sweden  SE-581 95
• Authors:
  • Sandberg, U
  • Staahl, P
  • Barrett, T
  • Mild, R
• Publication Date: 1982

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 62 p.
• Serial:
  • Dynapac Bulletin
  • Publisher: Dynapac Maskin AB

Subject/Index Terms

• TRT Terms: Accuracy; Correlation analysis; Measurement; Motorcycles; Sound level; Specifications; Standards; Test procedures
• Uncontrolled Terms: Repeatability
• ITRD Terms: 6527: Correlation (math, stat); 6136: Measurement; 1221: Motorcycle; 5927: Reproducibility; 6747: Sound level; 177: Specifications
• Subject Areas: Data and Information Technology; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00371438
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• Report/Paper Numbers: No. 243A Monograph
• Files: ITRD, TRIS
• Created Date: Apr 29 1983 12:00AM