- Author
-
Leasure, W. A., Jr.
|
Quindry, T. L.
|
Mathews, D. E.
|
Heinen, J. M.
- Title
- Interior/Exterior Noise Levels of Over-the-Road Trucks: Report of Tests. Final Report.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Department of Transportation, Washington, DC
- Report
-
NBS TN 737
September 1972
- Distribution
- Available from National Technical Information Service
- Keywords
-
trucks; vehicle noise; noise pollution; engine noise; acoustic measurement; noise reduction; human factors engineering
- Identifiers
- DOT/4DZ/DB; DOT/5B; noise levels; interior noise; exterior noise
- Abstract
- This report presents the results of interior and exterior noise measurements which were made on a representative sample of fifteen over-the-road trucks under various operational modes. In-cab measurements were made six inches from the right and left ears of the driver with windows open and closed. Simultaneous exterior measurements were made utilizing a six-microphone array. Graphic histories of A-weight sound level versus time are presented for all test conditions and microphone locations. The National Bureau of Standards made the field measurements and tabulated the data; however, interpretation of the results is the responsibility of the Department of Transportation and the American Trucking Associations -- the joint sponsors of the study.