EXPERIMENTAL STUDIES ON TRUCK AND BUS NOISE REDUCTION IN JAPAN

Four heavy duty vehicle manufacturers in Japan have conducted a three-year joint project under a contract with Ministry of International Trade and Industry to study noise reduction of heavy duty trucks and buses. The target noise leve of 86 dB(A) during the ISO R362 pass-by test has been achieved on four experimental vehicles. In the course of the joint project, the legislative noise limit in Japan was made more stringent. In addition, the Environment Agency is to issue early in 1978 the further tightening of the particular limit to 86 dB(A) effective 1979. This paper covers the process from the basic study to completion of the four experimental vehicles.

Media Info

  • Pagination: p. 855-862

Subject/Index Terms

Filing Info

  • Accession Number: 00193809
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: May 26 1979 12:00AM