Proposal for editorial improvements and updates to ISO and ASTM standards references and to align with Supplement 2 to the 04 series of amendments, including a new temperature correction formula for the rolling sound emissions of tyres of classes C1 and C2 and to remove the content of the now obsolete Annex 4 as well as all its references.

Proposal from the Measurement Uncertainties informal group for a Document for Reference providing a general approach on how to handle measurement uncertainties in UN Regulations (initially addressing UN Regulations Nos. 51 and 117).

Proposal from Task Force on Tyre Abrasion (TFTA) to introduce test methods to measure tyre abrasion.

Proposal to improve the reproducibility of the snow grip test method by replacing the current reference tyres C3 SRTTs 19.5 and 22.5 with the new reference tyres C3 SRTTs 19.5 and 22.5 siped.

Proposal to allow the use of LT-marked tyres under certain conditions and weight limits with a rolling resistance greater than the current limits.

Proposal to complete the amendment proposal adopted at the 78th GRBP session (informal document GRBP-78-05 replacing ECE/TRANS/WP.29/GRBP/2023/19).

Proposal to improve the reproducibility of the snow grip test method by replacing the current reference tyres C3 SRTTs 19.5 and 22.5 with the new reference tyres C3 SRTTs 19.5 and 22.5 siped.

Main body and Annex 1 proposals.

Proposal to introduce a new temperature correction formula for the rolling sound emissions of tyres of classes C1 and C2, to remove the content of the now obsolete Annex 4 as well as all its references, to update references to standards, and to make editorial improvements for clarity and consistency across tyre regulations.

Proposal to reduce noise measurement variability, completing the amendment proposal adopted at the seventy-eighth session of the Working Party on Noise and Tyres (informal document GRBP-78-05 replacing ECE/TRANS/WP.29/GRBP/2023/19).

Proposal to update the whole vehicle approval with regard to the series of amendments to UN R12, 46, 48, 110, 117, 127, and 135.

Proposal to amend rolling resistance provisions with regard to heavy-duty-use light trucks.

Small group (France, Netherlands, ETRTO, BIPAVER) proposal to restructure retreaded tyre requirements and regulations.

Proposal from the informal group on Measurement Uncertainties, superseding the proposal in document GRBP/2023/19.

Proposal from the Noise Measurement Uncertainties informal group to update provisions related to temperature sensitivity.

Submitted by the Chair of informal group on Measurement Uncertainties.

Proposal for a reference document concerning a general approach for how to handle measurement uncertainties under UN Regulations within the purview of GRBP.

Proposal from the Measurement Uncertainties informal group to introduce measures to reduce variability in noise measurements.

Proposal to introduce measures to reduce variability in noise measurement.

Third water-depth measurement workshop.

Workshop on water depth measurement.

Participation in the water-depth measurement workshop session.

Request to allocate time on the agenda of the 78th session for consideration of performance requirements for tyres used on heavy-duty pickup trucks designed for professional tasks on rough terrains.

Proposal from the Noise Measurement Uncertainties informal group for amendments to Annex 3.

Proposal for improvements to the draft Revision 2 to GRBP/2022/9.

Agenda for review of the informal group status report to GRBP. The session separately includes a workshop on water depth measurement.