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Proposal for a Revision 2 to the general approach how to handle noise measurement uncertainty
Document GRBP-77-08
31 January 2023
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Previous Documents, Discussions, and Outcomes
3. | UN Regulation No. 51 (Noise of M and N categories of vehicles)

6. The Chair of IWG MU reported on their activities (GRBP-77-10-Rev.1) and presented amendments to the document of reference on measurement uncertainties (GRBP-77-07 and GRBP-77-08). GRBP adopted the amendments and requested the secretariat to publish the revised document of reference on the GRBP website.

7. The expert from IWG MU introduced a proposal that aimed to amend UN Regulation No. 51 with tables showing the measurement uncertainties when performing type approval, conformity of production (COP) or field testing (e.g. market surveillance) (GRBP-77-09). Some GRBP experts suggested that these tables be included not in the UN Regulation, but in another document, for example, the above document of reference. Following an exchange of views, GRBP decided to revert to this issue at the next session.

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)
Related and Previous Documents
GRBP-77-07
GRBP/2022/9/Rev.1
GRBP-77-09
Relates to UN R51 | UN R117 |