Proposals regarding DSSAD provisions.

Evaluation of alternative statistical procedures for the evaluation of in-service conformity emissions tests under the real-driving emissions (RDE) regulation.

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Proposal to expand the scope of the activity to include C2 and C3 tyres.

Proposal to expand and improve the current definition of a radial structure while ensuring the radial tyres key features (mechanical decoupling between the tread and the bead).

Proposal to amend the definition of “radial tyre” in UN Regulations No. 54, 75, 106, 108 and 109 based on the proposal for UN Regulation No. 30 in document GRBP/2021/9.

Proposal to amend the transitional provisions of GRE/2021/13 (R148) , GRE/2021/14 (R149) and GRE /2021/15 (R150)

Proposal to correct errors and clarify provisions based on requirements introduced in the Amendment 6 to UN GTR No. 15.

Proposal to correct errors and clarify provisions based on requirements introduced in the Amendment 6 to UN GTR No. 15.

Proposes updates and amendments to proposal to introduce new requirements relating to Auxiliary Emission Strategies, cold engine starts and the use of Portable Emissions Measurement Systems (PEMS) to measure particle numbers

Clarifications regarding “coasting” and twin roller dynamometers in 4WD operation.

Proposal to address use of the phrase “if PN measurement is required” throughout the regulation given that PN measurement in both Level 1A and Level 1B is now required.

Proposal to modify provisions of the 01 series pursuant to consideration of the proposal to address the use of the phrase “if PN measurement is required” in the original text of the regulation.

Proposal to introduce particle number requirements and limits for Level 1B. The proposal also aligns the particulate measurement procedures with changes introduced in GTR No 15 Amendment 6 and other adaptations to technical progress.

Proposal to ensure that Level 2 is the latest version of this Regulation and is therefore subject to mutual recognition under the 1958 Agreement, given that there is a concurrent proposal to for an 02 series of amendments which introduces particle number requirements and limits for Level 1B. This proposal for a 03 series of amendments also aligns the particulate measurement procedures with changes introduced in GTR No 15 Amendment 6 as well as other adaptations to technical progress.

Revised ECE/TRANS/WP.29/GRSP/2021/28

Proposal to align UN R127 with provisions set out in the revised General Safety Regulation (EU) 2019/2144 that will apply in the European Union in accordance with the proposed transitional provisions. The proposal also covers a specific provision on optional monitoring of headform contact with A-pillars, windscreen header and cowl and proposes inconsequential adaptations and clarifications to the existing requirements