GAR | GRBP-74-12

Document Number GRBP-74-12

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Document title	IWG MU (Measurement Uncertainties): Terms of Reference
Date	31 Aug 2021			This revised document intended to present to amend 117 the timetable for the work related to Regulation No. 117 has been shifted with approximately 12 months for this part. The aim of the IWG is to propose harmonized measures for evaluating systematic errors and random errors to improve the test procedures to reduce measurement uncertainties
Source(s)	Add source(s) of document, if applicable
Status
Rulemaking area(s)	UN R51 Vehicle Noise UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance
Meeting(s)	GRBP \| Session 74 \| 15-17 Sep 2021 Agenda item 3. UN Regulation No. 51 (Noise of M and N categories of vehicles) Agenda item 7. (e) UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip) TFMU \| Session 13 \| 13 Jul 2021
Related documents
Related documents	GRBP-73-16		Revised terms of reference for the Sound Measurement Uncertainties informal group
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Excerpts from session reports related to this document
GRBP \| Session 74 \| 15-17 Sep 2021			4. The expert from Norway, in his capacity of Chair of the Informal Working Group on Measurement Uncertainties (IWG MU), reported on the progress of IWG MU (GRBP-74-20) and proposed to update its Terms of Reference (GRBP-74-12). GRBP adopted the revised Terms of Reference, as laid down in Annex II.