Proposal to introduce an alternative procedure for type approval of trailers (vehicles of categories O3 and O4) regarding their Tyre Pressure Monitoring System (TPMS), Tyre Pressure Refilling System (TPRS) and Central Tyre Inflation System (CTIS).

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Text, all tables and figures in this proposal have been prepared by the experts of the Task Force on Reverse Warning Sound (TF RWS) with the aim to draft a new UN Regulation concerning the approval of audible reverse warning devices and of motor vehicles with regard to their audible reverse warning signals.

Proposal to remove an inconsistency in the marking provisions and extend production of the “regroovable” symbol or word “REGROOVABLE” beyond moudling (i.e., enable use of other technologies) for tyres that can be regrooved and to consolidate the calculation of reference dimensions with that provided in GTR 16 to allow measuring tyres with size designations listed in Annex 5 on rims whose width code differs from the measuring rim width code listed in the tables of Annex 5.

Proposal to align the definitions of “diagonal” or “bias-ply” and “bias belted” tyre structures to the definitions given in UNvR30 and R75, to improve the text with regard to description of the composition of the size designation for metric tyres, and to resolve an apparent contradiction regarding the prefixes IF and VF.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Presentation by ISO TC43/SC1/WG42

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Task Force on Tyre Pressure Monitoring System and Tyre Installation (TF TPMSTI) with the aim to implement the requirements for a Tyre Pressure Refill System (TPRS) and a Central Tyre Inflation System (CTIS)

Proposal for amendments to ECE/TRANS/WP.29/GRBP/2022/5

Propose a new scheme of approval for Retreaded snow tyres for use in severe snow conditions

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal to avoid placing requirements in the Definitions section and to facilitate the text by making use of the definition of “service description” that was introduced by Supplement 24.

Proposal to clarify some prescriptions and correct some text inconsistencies

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

TF TA will address the tyres abrasion performance by determining a standardized measurement method which will allow for the quantification of the microplastic emissions in the environment. At the same time, the TF TA will investigate the correlation between abrasion rate and durability and consider the inclusion of both abrasion rate and durability

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1