IWG MU: Proposal for a reference document; a general approach how to handle measurement uncertainty
Document GRBP/2022/9
25 November 2021

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Status: Superseded
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Previous Documents, Discussions, and Outcomes
2. | UN Regulation No. 51 (Noise of M and N categories of vehicles)

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.

4. (c) | UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)
2. | UN Regulation No. 51 (Noise of M and N categories of vehicles).

10. The expert from IWG MU introduced a general approach how to handle measurement uncertainties (ECE/TRANS/WP.29/GRBP/2022/9, as amended by GRBP-75-07, and GRBP-75-08). GRBP endorsed this document and requested the secretariat to publish it as a document of reference on the GRBP website. The expert from IWG MU pointed out that an amendment to this document would be presented at the next session. GRBP that WP.29 should be informed about the developed general approach to measurement uncertainties, because it could apply to UN Regulations beyond the scope of GRBP.

3. | UN Regulation No. 138 (Quiet road transport vehicles).
4. (d) | UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)
7. | Proposals for amendments to the Consolidated Resolution on the Construction of Vehicles

30. GRBP recalled that the reference document with a general approach and scientific background for handling measurement uncertainties in UN Regulations (ECE/TRANS/WP.29/GRBP/2022/9) was addressed under agenda item 2 (paragraph 10 above).

Related and Previous Documents
GRBP-75-07
GRBP/2022/9/Rev.1
GRBP/2022/9/Rev.1
Relates to UN R51 | UN R117 |