UN R51: Proposal for Supplement 4 to the 03 series of amendments
Document WP.29/2018/63
5 April 2018

Proposal to add indoor testing, including ISO 362-3, as an alternative to the type approval tests in Annex 3. In addition, UN R51 allows the use mechanical or electronic devices to control the gear shifting and measures to avoid accelerations greater than 2.0 m/s2. However, the measures are not defined and the manufacturer or technical service is not obliged to document the methodology in the test report. This proposal introduces a table with examples for devices and measures for reference and would require documentation of methodology used.

Status: Adopted
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Previous Documents, Discussions, and Outcomes
4. (a) | UN Regulation No. 51 (Noise of M and N categories of vehicles): Development

6. The Chair of the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) proposed to introduce transitional provisions for Supplements 4 and 5 to the 03 series of amendments to UN Regulation No. 51 (ECE/TRANS/WP.29/GRB/2019/9 and ECE/TRANS/WP.29/GRB/2019/11). GRB adopted these proposals and recalled that Supplement 5 would still be considered by WP.29 at its session in March 2019 (ECE/TRANS/WP.29/2019/4). To speed up the amendment process, GRB requested the secretariat to issue a revised version of ECE/TRANS/WP.29/2019/4 with the adopted transitional provisions.

7. GRB also noted that, during the adoption of Supplement 4 to the 03 series of amendments, a sentence in Annex 3, paragraph 3.1.2.1.4.2. had been deleted by mistake (ECE/TRANS/WP.29/GRB/2019/9). To restore the sentence, GRB requested the secretariat to issue a corrigendum to the Supplement which would be deemed applicable ab initio. GRB also adopted a minor editorial correction to Annex 3, paragraph 3.1.2.1. (ECE/TRANS/WP.29/GRB/2019/8).

4. (a) | UN R51: Development

5. The expert from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) proposed amendments aimed at updating and revising Supplement 4 to the 03 series of amendments to UN Regulation No. 51 (ECE/TRANS/WP.29/GRB/2018/10). GRB adopted the proposals and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote at their March 2019 sessions as a draft Supplement 5 to the 03 series of amendments to UN Regulation No. 51, subject to the following modifications:

Page 2, lines 2 and 3, for Figure 3c read Figure 4c.

Page 3, table, row 3, last column, for lveh read l.

4. (b) | UN R51: Additional sound emission provisions
4.9.2. | Proposal for Supplement 4 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

8. The expert from ISO presented revised proposals that introduced into Regulation No. 51 an option of indoor testing, according to standard ISO 362-3 (ECE/TRANS/WP.29/GRB/2018/3). This proposal received comments from the experts of China, France (GRB-67-11), Germany, Netherlands, Russian Federation (GRB-67-01), Sweden and OICA. Following an in-depth discussion, GRB adopted the proposals, as amended (Annex II of the session report), and requested the secretariat to submit them to the World Forum for Harmonization of Vehicle Regulations (WP.29) and to the Administrative Committee (AC.1) for consideration and vote at their June 2018 sessions as a draft Supplement 4 to the 03 series of amendments to Regulation No. 51.

11. The expert from OICA proposed amendments to Regulation No. 51 with the aim to ensure transparency during the type approval process in situations where the manufacturer could either use mechanical or electronic devices to control the gear shift, or take measures to avoid accelerations greater than 2.0 m/s² (ECE/TRANS/WP.29/GRB/2018/2 and GRB-67-17). The proposal received questions and/or comments from the experts of China, France, Germany, Japan and ISO. GRB adopted the proposals, as contained in Annex III to the session report, and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote at their June 2018 sessions as a draft Supplement 4 to the 03 series of amendments to Regulation No. 51.

4. (b) | Regulation No. 51 (Noise of M and N categories of vehicles): Additional sound emission provisions
Related and Previous Documents
GRB/2018/2
GRB/2018/3
GRB-67-01/Rev.1
GRB-67-17
GRB/2018/10
ASEP II-10-14/Rev.2
GRB/2019/9
Relates to UN R51 |