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Proposal for Supplement 3 to the 03 series of amendments to Regulation No. 51
Document GRB/2017/5
16 June 2017

Proposal to

  1. amend the scope to be design-neutral and reflect the driving situations covered by the Regulation;
  2. highlight that ASEP apply to vehicles and their electric sound enhancement systems such as the Audible Vehicle Alert System (AVAS) and silencers equipped with an active cancelling system
  3. update the “backfire” assessment procedure; and
  4. clarify the gear ratio anchor point in Annex 7 as defined via Annex 3

Status: Superseded
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Previous Documents, Discussions, and Outcomes
3.5.3. | Working Party on Noise (GRB) (Sixty-seventh session, 24-26 January 2018)

53. In particular, the GRB chair mentioned that GRB had adopted amendment proposals to Regulation No. 51 which would introduce an option of indoor testing, according to standard ISO 362-3, upon understanding that the Type Approval Authority could always mandate an outdoor test for verification. He further pointed out that GRB had addressed the pending issue of transitional provisions for the earlier amendment proposals to Regulation No. 51 which had been submitted to the March 2018 session of WP.29 as ECE/TRANS/WP.29/2018/7. GRB had agreed that these proposals should be introduced as a Supplement with an 18-month transitional period and requested the secretariat to issue an addendum to ECE/TRANS/WP.29/2018/7.

4.6.2. | Proposal for Supplement 3 to the 03 series of amendments to UN Regulation No. 51 (Noise of M and N categories of vehicles)
4. (a) | Regulation No. 51 (Noise of M and N categories of vehicles): Development
4. (b) | Regulation No. 51 (Noise of M and N categories of vehicles): Additional sound emission provisions

13. On behalf of IWG ASEP, the expert from France presented its status report to GRB (GRB-66-14). In particular, IWG ASEP had agreed to propose some improvements in the current Annex 7 as soon as possible, as laid down in ECE/TRANS/WP.29/GRB/2017/5, and then to develop a more general and strategic approach of revising Annex 7. The expert from the Russian Federation commented on ECE/TRANS/WP.29/GRB/2017/5 (GRB-66-06). GRB agreed to merge these proposals with the other proposed amendments to the 03 series of amendments to Regulation No. 51 (see para. 9 above).

Related and Previous Documents
GRB-66-06
ASEP II-05-04
WP.29/2018/7
Relates to UN R51 |