THE NEW AND THE OLD STANDARDS IN THE ENVIRONMENTAL NOISE MEASUREMENT IN JAPAN

The standards for the environmental noise in Japan had been measured and estimated based on the median values of sound pressure levels, L50, for many years. However, they were revised in September 1998 and enforced in April 1999. Since then, the measurement and the estimation based on the equivalent sound pressure level, LAeq, have been used. In this report, the status quo about the achievement of standards for environmental noise has been analysed by the new and the old estimations, namely L50 and LAeq. At the same time, the standards for areas adjacent to the roads (the space adjoining the main traffic road), which have been newly defined this time, are also analysed using the existing research data of over 2000 samples which have been collected in Nagoya City. The population of Nagoya City is about 2 millions. As the result, we have come to the conclusion that the achievement ratios of the standards for environmental noise based on LAeq is about 53%. We have also found out that about 24% of residents is disturbed by the noise caused by the traffic in case of areas adjacent to the roads. Namely, the traffic noise level is over the standards in these areas. On the other hand, the problems concerning the measurement based on LAeq are also presented to a certain level in this study. (A) For the covering abstract see ITRD E113232.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/980655414
• Corporate Authors:

  CONGRESS SECRETARIAT

  VOORWEG 105-A
  ZOETERMEER,   Netherlands  NG 2715
• Authors:
  • MISHINA, Y
  • OGURA, T
  • HAYASHI, A
  • OMIYA, M
  • KUNO, K
• Conference:
  • INTER-NOISE 2001 - ABSTRACTS FROM INTERNATIONAL CONGRESS AND EXHIBITION ON NOISE CONTROL ENGINEERING
  • Location: THE HAGUE , Netherlands
  • Date: 2001-8-27 to 2001-8-30
• Publication Date: 2001

Language

• English

Media Info

• Features: References;
• Pagination: p. 2739-42

Subject/Index Terms

• TRT Terms: Arterial highways; Attitudes; Conferences; Control; Measurement; Noise; Perception; Urban areas
• Geographic Terms: Japan
• ITRD Terms: 2267: Attitude (psychol); 8525: Conference; 3874: Control; 8053: Japan; 2748: Main road; 6136: Measurement; 2492: Noise; 2229: Perception; 313: Urban area
• Subject Areas: Data and Information Technology; Environment; Highways; Safety and Human Factors; Society;

Filing Info

• Accession Number: 00927079
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 9-806554-1-4
• Files: ITRD
• Created Date: Jul 8 2002 12:00AM