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The trend of noise regulation in Japan
Document GRB-62-13/Rev.1
24 August 2015

Presentation of Japan’s plans for phasing in UN R41, UN R51 (Phase 2, but not Phase 3 limits), and UN R117 requirements.

Submitted by MLIT and JASIC
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Previous Documents, Discussions, and Outcomes
4. (a) | Regulation No. 51: Development
7. | Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)
8. | Collective amendments
9. | Exchange of information on national and international requirements on noise levels

16. The expert from China briefed GRB on the activities of the China vehicle noise standards working group (GRB-62-10). The experts from Japan informed GRB about the trends of noise regulation in Japan and gave an overview of the future policy for motor vehicle noise reduction (GRB-62-13-Rev.1 and GRB-62-12, respectively). The expert of ISO reported on the activities of his organization on interior noise, with the aim to review ISO 5128 (GRB-62-07). GRB took note of these presentations and felt that some of the issues raised could be included in the programme of work of GRB (see para. 27 below).

Related and Previous Documents
GRB-62-12
Relates to UN R41 | UN R51 | UN R117 |