10. The expert from China reported on their research on measurement methods for passenger vehicles and trucks in multiple driving mode conditions and to characterize the current situation and possible developments (GRBP-76-29). GRBP invited TF VS to consider this study as well.

9. The expert from OICA presented a comparison between two recent studies on the limits of sound levels of M- and N-category vehicles (GRBP-76-14). GRBP invited TF VS to discuss this topic at its forthcoming meeting in September 2022.

3. GRBP noted the activities of the Informal Working Group on Measurement Uncertainties (IWG MU) (GRBP-76-08) and considered their proposal that aimed to reduce variability (ECE/TRANS/WP.29/GRBP/2022/16 and GRBP-76-09). GRBP adopted the proposal, as amended by GRBP-76-09, and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and the Administrative Committee of the 1958 Agreement (AC.1) as draft Supplement 8 to the 03 series of amendments to UN Regulation No. 51.

4. The expert of IWG MU presented a revised document of reference on measurement uncertainties (ECE/TRANS/WP.29/GRBP/2022/9/Rev.1). GRBP adopted the revised document, as amended by GRBP-76-11, and requested the secretariat to publish it on the GRBP website for reference documents.

5. GRBP took note that, at the June 2022 session of WP.29, IWG MU had delivered a presentation on the general approach of how to handle measurement uncertainties in UN Regulations.

8. The expert of the Task Force on Vehicle Sound (TF VS) reported on their activities (GRBP-76-15-Rev.1).

7. The expert from OICA raised a number of practical questions on collecting and analysing test data for the Real Driving Additional Sound Emission Provisions (RD ASEP) (GRBP-76-10). GRBP invited contracting parties applying UN Regulation No. 51 to prepare proposals on this issue and agreed to revert to it at the next session.

3. GRBP noted the activities of the Informal Working Group on Measurement Uncertainties (IWG MU) (GRBP-76-08) and considered their proposal that aimed to reduce variability (ECE/TRANS/WP.29/GRBP/2022/16 and GRBP-76-09). GRBP adopted the proposal, as amended by GRBP-76-09, and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and the Administrative Committee of the 1958 Agreement (AC.1) as draft Supplement 8 to the 03 series of amendments to UN Regulation No. 51.

4. The expert of IWG MU presented a revised document of reference on measurement uncertainties (ECE/TRANS/WP.29/GRBP/2022/9/Rev.1). GRBP adopted the revised document, as amended by GRBP-76-11, and requested the secretariat to publish it on the GRBP website for reference documents.

5. GRBP took note that, at the June 2022 session of WP.29, IWG MU had delivered a presentation on the general approach of how to handle measurement uncertainties in UN Regulations.

133. For agenda item 4.9.2. (ECE/TRANS/WP.29/2022/84), the Chair of GRBP presented a corrigendum (WP.29-187-07) and mentioned few editorial corrections. The World Forum agreed on the proposed changes and recommended the submission of ECE/TRANS/WP.29/2022/84 to AC.1 for voting, subject to the following amendments:

Paragraph 2.24., table of symbols, lines L_{TR,Jref,(vTR,ref)}, L_TR,DB,Jref, L_TR,DB,Jref, L_{TR,DB,crs,Jref}, and L_{TR,DB,wot,Jref}, last column, for “left/ride side” read “left/right side”.

Add a new paragraph 11.13. to read:

“11.13.

Supplement 7 (in particular, but not limited to Appendices 2 and 3 to Annex 3 and Annex 9) does not apply to existing type approvals, originally granted prior to the date of entry into force of Supplement 7.”

Annex 3, Appendix 3, paragraph 3.2., for “left and ride side” read “left and right” side.

133. For agenda item 4.9.2. (ECE/TRANS/WP.29/2022/84), the Chair of GRBP presented a corrigendum (WP.29-187-07) and mentioned few editorial corrections. The World Forum agreed on the proposed changes and recommended the submission of ECE/TRANS/WP.29/2022/84 to AC.1 for voting, subject to the following amendments:

Paragraph 2.24., table of symbols, lines L_{TR,Jref,(vTR,ref)}, L_TR,DB,Jref, L_TR,DB,Jref, L_{TR,DB,crs,Jref}, and L_{TR,DB,wot,Jref}, last column, for “left/ride side” read “left/right side”.

Add a new paragraph 11.13. to read:

“11.13.

Supplement 7 (in particular, but not limited to Appendices 2 and 3 to Annex 3 and Annex 9) does not apply to existing type approvals, originally granted prior to the date of entry into force of Supplement 7.”

Annex 3, Appendix 3, paragraph 3.2., for “left and ride side” read “left and right” side.

3. GRBP noted the activities of the Informal Working Group on Measurement Uncertainties (IWG MU) (GRBP-76-08) and considered their proposal that aimed to reduce variability (ECE/TRANS/WP.29/GRBP/2022/16 and GRBP-76-09). GRBP adopted the proposal, as amended by GRBP-76-09, and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and the Administrative Committee of the 1958 Agreement (AC.1) as draft Supplement 8 to the 03 series of amendments to UN Regulation No. 51.

6. The expert from ISO proposed to bring the latest ISO 10844:2021 standard test surface into UN Regulation No. 51 (ECE/TRANS/WP.29/GRBP/2022/13). GRBP adopted this proposal and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and AC.1 as part of draft Supplement 8 to the 03 series of amendments to UN Regulation No. 51.

133. For agenda item 4.9.2. (ECE/TRANS/WP.29/2022/84), the Chair of GRBP presented a corrigendum (WP.29-187-07) and mentioned few editorial corrections. The World Forum agreed on the proposed changes and recommended the submission of ECE/TRANS/WP.29/2022/84 to AC.1 for voting, subject to the following amendments:

Paragraph 2.24., table of symbols, lines L_{TR,Jref,(vTR,ref)}, L_TR,DB,Jref, L_TR,DB,Jref, L_{TR,DB,crs,Jref}, and L_{TR,DB,wot,Jref}, last column, for “left/ride side” read “left/right side”.

Add a new paragraph 11.13. to read:

“11.13.

Supplement 7 (in particular, but not limited to Appendices 2 and 3 to Annex 3 and Annex 9) does not apply to existing type approvals, originally granted prior to the date of entry into force of Supplement 7.”

Annex 3, Appendix 3, paragraph 3.2., for “left and ride side” read “left and right” side.

5. GRBP also addressed another proposal by IWG ASEP that introduced Real Driving Additional Sound Emission Provisions (RD ASEP) as a preliminary test procedure for the purpose of collecting experience on the new test and evaluation concept. (ECE/TRANS/WP.29/GRBP/2022/4). GRBP adopted this proposal, as amended by GRBP-75-37, and requested the secretariat to submit it for consideration and vote at the June 2022 sessions of WP.29 and AC.1 as a new Supplement to the 03 series of amendments to UN Regulation No. 51.

8. The expert of IWG MU proposed to align the entry into force of draft Supplements (GRBP-75-04-Rev.1). GRBP agreed to request WP.29 and AC.1 to postpone to their June 2022 sessions consideration of draft Supplement 7 to the 03 series of amendments to UN Regulation No. 51 (ECE/TRANS/WP.29/2022/4), in order to combine it into a consolidated proposal with the amendments mentioned in paragraphs 4, 5 and 7 above.

4. The expert from IWG ASEP GRBP introduced a proposal that aimed to clarify the current wording of UN Regulation No. 51 (ECE/TRANS/WP.29/GRBP/2022/3). GRBP adopted the proposal, as amended by GRBP-75-36 and subject to deletion “or later” for the ISO standard references in Annexes 3 and 8, and requested the secretariat to submit it for consideration and vote at the June 2022 sessions of WP.29 and AC.1 as a new Supplement to the 03 series of amendments to UN Regulation No. 51.

8. The expert of IWG MU proposed to align the entry into force of draft Supplements (GRBP-75-04-Rev.1). GRBP agreed to request WP.29 and AC.1 to postpone to their June 2022 sessions consideration of draft Supplement 7 to the 03 series of amendments to UN Regulation No. 51 (ECE/TRANS/WP.29/2022/4), in order to combine it into a consolidated proposal with the amendments mentioned in paragraphs 4, 5 and 7 above.

9. The expert from China proposed to extend the transitional period in paragraph 11.8. of the 03 series of amendments to UN Regulation No. 51, due to the difficulties in meeting the noise limits by microvans and micro-trucks available at the national market (GRBP-75-40 and GRBP-75-41). GRBP agreed to extend the transitional period until the end of 2023 and requested the secretariat to include this modification in draft Supplement 7 to the 03 series of amendments to UN Regulation No. 51 (paragraph 8 above). For any further extension, GRBP invited the expert from China to submit an official document to the next session.

9. The expert from China proposed to extend the transitional period in paragraph 11.8. of the 03 series of amendments to UN Regulation No. 51, due to the difficulties in meeting the noise limits by microvans and micro-trucks available at the national market (GRBP-75-40 and GRBP-75-41). GRBP agreed to extend the transitional period until the end of 2023 and requested the secretariat to include this modification in draft Supplement 7 to the 03 series of amendments to UN Regulation No. 51 (paragraph 8 above). For any further extension, GRBP invited the expert from China to submit an official document to the next session.

3. GRBP was informed about the activities of the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) (GRBP-75-38), of the Informal Working Group on Measurement Uncertainties (IWG MU) (GRBP-75-05) and of the Task Force on Vehicles’ Sound (TF VS) (GRBP-75-32).

3. GRBP was informed about the activities of the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) (GRBP-75-38), of the Informal Working Group on Measurement Uncertainties (IWG MU) (GRBP-75-05) and of the Task Force on Vehicles’ Sound (TF VS) (GRBP-75-32).

14. The expert from ISO reported on technical measurement development for standard ISO 16254 (GRBP-75-03). He also presented an updated standard ISO 10844:2021 (GRBP-75-02-Rev.1/Add.1) and proposed to include it into UN Regulations Nos. 51, 117 and 138 (GRBP-75-02-Rev.1). GRBP invited the expert from ISO to submit an official document to the next session.

11. The expert from IWG MU proposed to update their Terms of Reference (GRBP-75-06-Rev.1). GRBP adopted the revised Terms of Reference, as laid down in Annex II of the session report.

8. The expert of IWG MU proposed to align the entry into force of draft Supplements (GRBP-75-04-Rev.1). GRBP agreed to request WP.29 and AC.1 to postpone to their June 2022 sessions consideration of draft Supplement 7 to the 03 series of amendments to UN Regulation No. 51 (ECE/TRANS/WP.29/2022/4), in order to combine it into a consolidated proposal with the amendments mentioned in paragraphs 4, 5 and 7 above.

9. The expert from China proposed to extend the transitional period in paragraph 11.8. of the 03 series of amendments to UN Regulation No. 51, due to the difficulties in meeting the noise limits by microvans and micro-trucks available at the national market (GRBP-75-40 and GRBP-75-41). GRBP agreed to extend the transitional period until the end of 2023 and requested the secretariat to include this modification in draft Supplement 7 to the 03 series of amendments to UN Regulation No. 51 (paragraph 8 above). For any further extension, GRBP invited the expert from China to submit an official document to the next session.

3. GRBP was informed about the activities of the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) (GRBP-75-38), of the Informal Working Group on Measurement Uncertainties (IWG MU) (GRBP-75-05) and of the Task Force on Vehicles’ Sound (TF VS) (GRBP-75-32).