Presentation of outcomes from a GRBP group of interested experts formed to consider contents of documents GRBP-73-21, GRBP/2021/16, and GRBP-75-14.

Proposal from the Worn Tyres working group to amend its previous formal proposal.

Proposal from the informal group on sound Measurement Uncertainties to amend their previous formal proposal.

Proposal for the Measurement Uncertainties informal group to amend their previous formal submission (GRBP/2022/9/Rev.1).

Previous name of this TF was TF-SL for Sound Limits

Proposal introduces a new definition for taxi tyres and establishes different threshold from other tyres.

Proposals for editorial corrections to the provisions for type approval of special use tyres that fulfil the requirements for snow performance

Proposal for editorial corrections

Proposal introduces provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for those tyres complying with these requirements.

Proposal introduces provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for those tyres complying with these requirements

Exchange of information on national and international requirements on noise levels

Exchange of information on national and international requirements on noise levels

Initiated by the Federal Ministry for Digital and Transport (BMDV), the Federal Motor Transport Authority (KBA) tested various passenger cars (M1) and motorcycles (L3e) with regard to their noise emissions in 2021

CATC Data Study and Measurement Methods Research

The UI feature is being developed. The IWG on DETA is consulting the subsidiary bodies of
WP.29 concerning the proposed “summary documents” aimed at storing information associated with a Unique Identifier.

Re-introduces the definition of traction tyre as this can be still used between the entry into force date of the 04 series of amendments and 7 July 2024 .

Editorial corrections and amends the transitional provisions

Proposes the amendment to the transitional provisions aligning with other proposals

Updates the reference to latest version of ISO 10844:2021

1. Proposal to amend the 04 and 05 series of UN R41 and the 02 series of UN R63 to allow use of the latest state of the art ISO 10844 test track.
2. ISO has updated the ISO 10844 standard to reduce track-to-track variability caused by differing interpretations and implementations of the technical requirements. The tyre/road contribution to the overall sound performance of a motorcycle is lower compared to cars.
3. The improvements from the ISO 10844:2014 to the 2021 version would not result in a need for updating the surface for L-category test tracks: Updating the ISO 10844 reference would have negligible impact on the measurement procedure and measurement results.
4. If however the ISO reference in the L-category noise regulations would be updated without maintaining the current ISO 10844:2014 as an option, IMMA sees a potential risk of tracks needing recertification, creating administrative burden with no practical benefit.
5. If later on, the tracks would need re-surfacing anyway (e.g. due to wear), then these can be built and certified according to ISO10844:2021. Because of the above, IMMA would like to allow certification with the tracks complying to either ISO10844:2014 or ISO10844:2021.
6. This proposal takes the opportunity to introduce proposals for additional corrections in R41/04 and R41/05 as specified below:
   • Supplement 9 to the 04 series of amendments to UN Regulation 41 introduced a new paragraph 12.4, needing to renumber the (former) paragraphs 12.4 to 12.9 (WP.29/2021/4). Due to this renumbering, the reference to paragraph 12.7 in Annex 6 footnote a, and Annex 7 paragraph 2.6 is no longer correct and should be replaced by a reference to paragraph 12.8.
   • With the introduction of the 05 series of amendments the Transitional Provisions were rewritten and footnote a of Annex 6 became obsolete.

Proposal for a reference document.

Proposal from the Studded Tyres task force to introduce provisions for C1 tyre ice-grip performance.

Proposal to revise the limits for rolling resistance and wet grip, address tyres for vintage vehicles, and revise the definition for special-use C1 tyres.

Proposal to bring the latest ISO 10844 standard test surface into the Regulation.

Proposal to bring the latest ISO 10844 standard test surface into the Regulation.

Proposal to bring the latest ISO 10844 standard test surface into the Regulation.

Proposal from the Measurement Uncertainties informal group to introduce measures to reduce variability across assessments.

Proposal to introduce a new definition of traction elements to characterize traction tyres.

Proposal to introduce provisions to allow type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for tyres complying with these requirements.

Proposal to introduce provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for those tyres complying with these requirements.

Proposal to correct editorial mistakes in document GRBP/2021/17 that were not corrected by informal document GRBP74-31-Rev.1.