MOTORCYCLE NOISE TEST PROCEDURE EVALUATION: SAE XJ331A AND XJ47

SAE Recommended Practice XJee1a, Sound Levels for Motorcycles, was developed to represent vehicle operation and is well suited for determining noise levels of new motorcycles offered for sale. Similar procedures have been used for this purpose since 1969. SAE Recommended Practice XJ47, Maximum Sound Level Potential for Motorcycles, was developed as a manufacuring tool to determine a vehicle's maximum sound level potential and is an excellent tool for manufacturers. Because of its severe operating requirements, SAE XJ47 is not suited or recommended to be used as an enforcement standard.

• Supplemental Notes:
  • Presented at the SAE, National Combined Farm, Construction, and Industrial Machinery and Power plant Meetings, 9-12 September 1974, Milwaukee, Wisconsin.
• Corporate Authors:

  Society of Automotive Engineers

  485 Lexington Avenue
  New York, NY  United States  10017
• Authors:
  • Little, R A
• Publication Date: 1974

Media Info

• Features: Figures; Tables;
• Pagination: 9 p.

Subject/Index Terms

• TRT Terms: Acoustic measuring instruments; Acoustics; Engines; Motorcycles; Noise; Sound level meters; Standards
• Old TRIS Terms: Acoustic measurement; Engine noise
• Subject Areas: Economics; Environment; Highways; Safety and Human Factors; Society; Vehicles and Equipment;

Filing Info

• Accession Number: 00080393
• Record Type: Publication
• Source Agency: Highway Safety Research Institute
• Report/Paper Numbers: SAE 740686
• Files: TRIS
• Created Date: Feb 27 1975 12:00AM