NOISE STUDY: XM 561 AND XM561E1 1 1/4-TON CARGO TRUCKS

THE NOISE OF THE XM561 AND XM561E1 1-1/4-TON CARGO TRUCKS WAS EVALUATED WITH THE VEHICLES MOVING AND STATIONARY. THE NORMAL OPERATIONAL NOISE LEVELS IN THE CABS OF BOTH VEHICLES EXCEEDED THE LEVELS RECOMMENDED IN THE HEL STANDARD S-1-63B BECAUSE OF EXCESSIVE TRANSMISSION NOISE. IN THE XM561E1, THERE WERE ALSO OTHER NOISES AT EXCESSIVE LEVELS, BUT THEIR SOURCES COULD NOT BE ISOLATED. UNLESS ENGINE NOISE IS REDUCED, PERSONNEL WILL NOT BE ABLE TO USE 'DIRECT-VOICE' OR 'INTERCOM-TYPE' COMMUNICATIONS IN THESE VEHICLES. /AUTHOR/

• Supplemental Notes:
  • Rept No HEL-TN-4-65
• Corporate Authors:

  U.S. Army

  Human Engineering Labs
  ,    
• Authors:
  • Moreland, J B
• Publication Date: 1965-10

Media Info

• Pagination: 42 p.

Subject/Index Terms

• TRT Terms: Engines; Noise; Speech; Traffic noise; Transmissions; Trucks; Voice communication
• Old TRIS Terms: Engine noise; Truck engines; Truck noise
• Subject Areas: Environment; Highways; Motor Carriers; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00224013
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Tech Note
• Files: TRIS
• Created Date: Jul 8 1973 12:00AM