This agenda item relates to UN R41 Motorcycle Noise.

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.

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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.

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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.

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