FEASIBLE NOISE LIMITS FOR CONSTRUCTION AND MAINTENANCE EQUIPMENT AND STUDY OF NOISE REDUCTION METHODS

This study concerns modifications and evaluation of noise attenuating devices and methods for quieting diesel powered vehicles and construction equipment. The findings were used to develop guidelines for operation and correction of noisy vehicles and equipment and specifications for construction contracts. The major effort was directed towards modification of an existing 1964 diesel powered dump truck to build a 'Quieted Truck'. Changes to the exhaust system, cooling system and building a tunnel around the engine and drive train were successful in significantly reducing noise. The amount of reduction varied depending on factors such as speed and mode of operation. As one example, an estimated reduction from 82 to 73 dBA was measured at 50 feet during an acceleration test at 50 mph. A literature survey and synthesis on diesel powered trucks and construction equipment are a part of this report.

• Corporate Authors:

  California Department of Transportation

  Transportation Laboratory
  5900 Folsom Boulevard
  Sacramento, CA  United States  95819

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Hatano, M M
  • Shirley, E C
• Publication Date: 1977-1

Media Info

• Pagination: 154 p.

Subject/Index Terms

• TRT Terms: Construction equipment; Diesel engines; Diesel trucks; Engines; Guidelines; Maintenance equipment; Noise; Noise control; Performance based specifications; Sound level; Specifications; Trucks
• Uncontrolled Terms: Noise reduction
• Old TRIS Terms: Engine noise; Truck engines
• Subject Areas: Environment; Highways; Motor Carriers; Vehicles and Equipment;

Filing Info

• Accession Number: 00175558
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA/CA-77-18 Final Rpt., 657083
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jun 14 1978 12:00AM