GAR | GRBP-73-17

Document Number GRBP-73-17

1	2	3	4	6
Document title	UN R51: Proposal to amend the 03 series of amendments
Date	21 Jan 2021			Measurement Uncertainties informal group proposal to clarify the text and to amend: Annex 3, Paragraph 1.4. to delete determination of the vehicle speed by independent speed measuring devices Annex 3, Paragraph 1.5. to clarify that no determination of the wind speed is needed for indoor testing Annex 3, Paragraph 2.1.3. to clarify and differentiate between indoor and outdoor testing Annex 3, Paragraph 2.1.3.1.2. to clarify the temperature range for indoor facilities. Annex 3, Paragraph 2.1.3.2.2. to clarify the temperature range for outdoor facilities.

Status	Informal GR review
Rulemaking area(s)	UN R51 Vehicle Noise
Meeting(s)	GRBP \| Session 73 \| 26-29 Jan 2021 Agenda item 3. UN Regulation No. 51 (Noise of M and N categories of vehicles)
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Excerpts from session reports related to this document
GRBP \| Session 73 \| 26-29 Jan 2021			8. The experts from IWG MU also presented a draft reference document with a general approach to estimate measurement uncertainties (GRBP-73-15) and draft amendments to the 03 series of amendments to UN Regulation No. 51 (GRBP-73-17).