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UN R117: Proposal for Supplement 11 to the 02 series of amendments
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Reference Number: WP.29/2020/6
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Proposal for an amendment to complement the content of working document GRVA/2018/5. The proposal includes amendments to: - The Standard Reference Test Tyre (SRTT) denominations
- Remove the discrimination between the two Class C3 tyres
- Clarify that there are no C3 tyres in the scope of this UN Regulation “not marked with speed symbol”
- Align Annex 6 with the most recent amendments made to standard ISO 28580
- Define “standard deviation” as appropriate in the text
- Clarify that, in the cases of C2 and C3 tyres, the “Reference (test) pressure” and the value “Pr” correspond to the indication of the inflation pressure which is always marked on the sidewall
- Use “repeatable” instead of references to “reproducibility”
- Update test report forms
- Include the date on which the new proposed supplement of UN Regulation No. 117 will apply
- Improve the description of the evaluation of the rolling sound emission test
Correct the figure in Annex 2, Appendix 2, and- Update cross references pursuant to paragraph renumbering.
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Meeting Sessions: 180th WP.29 session (9-12
Mar 2020)
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Document date: 19 Dec 19
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Document status: Adopted text published
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Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance
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Adoption Vote
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This proposal (WP.29/2020/6), as amended by para. 85, was adopted by the World Forum. Thirty-eight Contracting Parties out of the 53 applying UN R117 were present for the vote by AC.1. Thirty-eight voted in favor with zero against and zero abstaining.
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