The text was prepared by the expert from the International Motorcycle Manufacturers Association (IMMA) to amend Supplement 6 to 04 series of amendments, aiming to minimize proliferation of approval numbers

3. The expert from IMMA presented a revised proposal which aims to minimize a proliferation of approval numbers (ECE/TRANS/WP.29/GRBP/2019/25/Rev.1 and GRBP-71-18-Rev.2). Following an in-depth discussion, GRBP adopted the proposal, as laid down in Annex II. GRBP requested the secretariat to submit it to WP.29 and the Administrative Committee (AC.1) for consideration and vote at their June 2020 sessions as a draft Supplement 8 to the 04 series of amendments to UN Regulation No. 41, together with ECE/TRANS/WP.29/GRBP/2019/24 adopted at the previous session.

Proposal to minimize proliferation of approval numbers from models with differences in vehicle exhaust and silencing systems.

4. The expert from IMMA proposed amendments with the aim to minimize proliferation of approval numbers from models with differences in vehicle exhaust and silencing systems (ECE/TRANS/WP.29/GRBP/2019/25). The experts from Germany, Japan, Russian Federation and Spain commented on the proposal. The Chair invited IMMA to prepare a revised document for the next session.

3. The expert from IMMA presented a revised proposal which aims to minimize a proliferation of approval numbers (ECE/TRANS/WP.29/GRBP/2019/25/Rev.1 and GRBP-71-18-Rev.2). Following an in-depth discussion, GRBP adopted the proposal, as laid down in Annex II. GRBP requested the secretariat to submit it to WP.29 and the Administrative Committee (AC.1) for consideration and vote at their June 2020 sessions as a draft Supplement 8 to the 04 series of amendments to UN Regulation No. 41, together with ECE/TRANS/WP.29/GRBP/2019/24 adopted at the previous session.

Proposal is to correct an omission regarding the compensating resevoir fill time thereby aligning UN R41 with the other noise UN Regulations Nos. 9, 51 and 63.

5. The expert from IMMA proposed correcting an omission (ECE/TRANS/WP.29/GRBP/2019/24). GRBP adopted the document, but agreed to postpone its submission to WP.29 and AC.1, awaiting other amendment proposals.

3. The expert from IMMA presented a revised proposal which aims to minimize a proliferation of approval numbers (ECE/TRANS/WP.29/GRBP/2019/25/Rev.1 and GRBP-71-18-Rev.2). Following an in-depth discussion, GRBP adopted the proposal, as laid down in Annex II. GRBP requested the secretariat to submit it to WP.29 and the Administrative Committee (AC.1) for consideration and vote at their June 2020 sessions as a draft Supplement 8 to the 04 series of amendments to UN Regulation No. 41, together with ECE/TRANS/WP.29/GRBP/2019/24 adopted at the previous session.

The text prepared by the expert from the International Motorcycle Manufacturers Association (IMMA) to amend UN Regulation No. 41-04 (up to Supplement 7), in order to clarify the implications of footnote one on the requirements specified in Annex 4.

4. The expert from IMMA proposed to clarify the specifications of the test site in Annex 4, following the end of the transitional period in paragraph 12.9. (GRBP-71-09). The experts from Germany, ISO and OICA raised questions on the purpose of the proposal. GRBP invited IMMA to discuss the issue with these experts and to prepare a revised proposal for the next session.

Proposal for amendment by IMMA to address the issue of stationary noise measurements on a single sided dual exhaust system.

5. The expert from IMMA proposed to modify the microphone position for measuring stationary noise in the case of several exhaust outlets (GRBP-71-10). GRBP adopted the proposal, as contained in Annex III, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2020 sessions as part of a draft Supplement 8 to the 04 series of amendments to UN Regulation No. 41.

The text was prepared by the expert from the International Motorcycle Manufacturers Association (IMMA) to amend the ASEP requirements

7. The expert from IMMA pointed out the differences in applying the concept of real driving between UN Regulation Nos. 41 and 51 (GRBP-71-19-Rev.1) and introduced draft revised ASEP provisions in UN Regulation No. 41 (GRBP-71-17). The Chair invited IMMA to continue working on this proposal in the framework of IWG ASEP with the aim to submit a formal document to the next session of GRBP.

Presentation by the expert of IMMA supporting the proposed amendment to ASEP (GRBP-71-17)

7. The expert from IMMA pointed out the differences in applying the concept of real driving between UN Regulation Nos. 41 and 51 (GRBP-71-19-Rev.1) and introduced draft revised ASEP provisions in UN Regulation No. 41 (GRBP-71-17). The Chair invited IMMA to continue working on this proposal in the framework of IWG ASEP with the aim to submit a formal document to the next session of GRBP.