Working Party on Noise | Session 65 | 15-17 Feb 2017
Geneva
Agenda Item 4. (a)
Regulation No. 51 (Noise of M and N categories of vehicles): Development

7. The expert from France proposed to correct some inconsistences in the 03 series of amendments to Regulation No. 51 (GRB-65-10). The experts from China and OICA pointed out that more corrections would be necessary. GRB invited all interested experts to cooperate on this issue with a view to preparing a consolidated official document for the next session.

8. The expert from Germany proposed to clarify the wording of paragraph 6.2.2. “Sound level limits” (GRB-65-01). GRB adopted this proposal, as contained in Annex II of the session report, and requested the secretariat to submit it to the World Forum for Harmonization of Vehicle Regulations (WP.29) and the Administrative Committee (AC.1) for consideration and vote at their June 2017 sessions as a draft Supplement 2 to the 03 series of amendments to Regulation No. 51.

9. The expert from ISO proposed to introduce indoor testing in Annex 3 of Regulation No. 51 as an option (GRB-65-04). This proposal received comments from the experts of France, Germany, Poland, Russian Federation, EC and OICA. The Chair invited these experts, as well as other interested parties, to review the ISO proposal and to submit a revised document to the next session.

10. The expert from France identified a number of ambiguous provisions in the current text of the 03 series of amendments to Regulation No. 51 that would allow different interpretations (GRB-65-12). He suggested that an implementation or interpretation guide be prepared to address these issues. The expert of OICA welcomed this initiative and pointed out that OICA had started compiling its own list of ambiguities. Following an exchange of views, GRB invited the experts from France, ISO and OICA to prepare a consolidated list of such issues for GRB review and envisaged that further work could be pursued in the framework of a small drafting group.

11. The expert from China reported issues that had been identified when applying the 03 series of amendments to Regulation No. 51 to M3 vehicles with different powertrain options. In particular, he was of the view that the Regulation should be amended with new provisions that would take into account the specific features of electric and hybrid vehicles.

Documentation
GRB-65-01 Proposal for correction to ECE/TRANS/WP.29/2015/62 (Germany)
GRB-65-02 China research on M3 subcategories under UN Regulation No. 51-03 series (China and CATARC)
GRB-65-04 Proposal to introduce provisions for indoor testing under UN Regulation No. 51 (ISO)
GRB-65-10 Proposal for correction to the 03 series of amendments to Regulation No. 51 (France)
GRB-65-10 Proposal for correction to the 03 series of amendments to Regulation No. 51 (France)
GRB-65-12 Proposals for interpretation of Regulation No. 51-03 (France)
WP.29/2016/4 Proposal for Supplement 1 to the 03 series of amendments to Regulation No. 51