Response to the proposal to update references to the permissible test tracks (document GRB/2013/2), arguing that the change from ISO 10844:1994 to ISO 10844:2011 is unnecessary since it does not change the test method to measure the tyre rolling noise.

Amendments to the proposal to amend the snow test method for C3 tyres in order to prescribe the wider of the possible speed ranges. Corrects wording to replace “blocking differential” with “differential lock” and mandatory use of differential lock in certain cases.

Amendments to the proposal to amend the snow test method for C3 tyres in order to prescribe the wider of the possible speed ranges. Corrects wording to replace “blocking differential” with “differential lock” and mandatory use of differential lock in certain cases.

Presentation aimed at resolving differences in vehicle categorizations used around the world.

IMMA contribution towards the World Forum project to codify and harmonize technical terms and abbreviations used across its regulations.

Proposal of two options for inserting provisions on tire dimensions into the amendment proposed in document GRB/2013/4 to revise the Annex 3 test procedures and interpretation of resulting data.

Text prepared by the International Organization of Motor Vehicle Manufacturers (OICA) in order to introduce the concept of “revision of approvals” in the regulations under GRB responsibility.

Russian response to IMMA’s reservations concerning the definition and use of the terms “sound” and “noise” in Regulation No. 41 and other UN Regulations relating to noise.

Proposal to open discussions on a new test procedure and possibly noise-labeling requirements for electric-mode vehicles to ensure that approaching vehicle audible systems designed to enhance the safety of pedestrians, including the blind, do not negate the benefits of noise reduction.

Notice of the European Union’s intention to accede to UN Regulation No. 41 and the possible accession to Regulations 9, 63, and 92. The EC requests GRB input before deciding whether to pursue a separate legislative process to establish new provisions for these related noise rules.

The transitional provisions in GRB/2012/08 are not in line with the latest UN Guidelines on Transitional Provisions. This proposal updates the transitional provisions and adds two amendments specifically applicable for UN Regulation No. 51.

List of acronyms and abbreviations contained in Regulation No. 51 prepared by the International Organization of Motor Vehicle Manufacturers (OICA).

This document presents the OICA position on vehicle classification, limits and dates in UN Regulation No. 51.03 (draft consolidated version presented in document GRB/2012/8).

Text prepared by the International Organization of Motor Vehicle Manufacturers (OICA) in order to incorporate the latest stage of relevant ISO standards in UN Regulation No. 51, Revision 2.

Presentation on the development of tire rolling resistance standards by the GRRF and GRB.

Presentation in support of Japan’s noise limit values proposal (document GRB/2012/7).

Proposal for additional sound emission provisions (ASEP) to align UN R59 with parallel amendments to the main vehicle noise regulation, UN R51.

Editorial corrections to the proposal prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.

EV/HEV Sound measurement results