Report of the Working Party on Noise from its February 2013 session.

Corrections to the proposal from the Russian Federation to elaborate on the concept of tyre deceleration (dω/dt) in the test technology.

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.

Comments on the proposed guidelines to avoid driver confusion in interaction with vehicle warnings, especially in safety-related automatic driver assist systems.

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

The proposal concerns specifications on category G of road tractors, extracting from and revising document GRB/2012/12 pursuant to discussions from the last Working Party on Noise session.

The proposal concerns specifications on the formulation of requirements on noise, revising the earlier document GRB/2012/12 pursuant to discussions from the last Working Party on Noise session.

Updated tables for proposed vehicle internal noise limits, revising document GRB/2012/12 pursuant to discussions from the last Working Party on Noise session.

The proposal concerns modification of the method of measuring vehicle internal noise and revises document GRB/2012/12 pursuant to discussions from the last Working Party on Noise session.

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.

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.

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.

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.

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.

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.

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

Presentation on objectives of the International Whole Vehicle Type Approval initiative and review of UN Regulations under the purview of GRB that could figure into the IWVTA system.

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

Presentation in support of Russian proposals on specifications for category G road tractors, formulation of requirements on noise, modification of the method for measuring vehicle internal noise, and recommended permissible levels of vehicle internal noise.

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

Proposal by the Chair and Vice-Chair of GRB to allow the use of the test track complying with ISO 10844:2011 in a new series of amendments to the UN R117. This is based upon document GRB-56-20 from the previous GRB session.

Proposal from the Russian Federation to elaborate on the concept of tyre deceleration (dω/dt) in the test technology. The proposal is based on informal document GRB-56-02 from the previous GRB session.

Proposed revisions to the Annex 3 test procedures and interpretation of resulting data. This is based upon informal document GRB-56-06.

Proposal to update noise test-track requirements from ISO 19844:1994 to ISO 10844:2011 and incorporates transitional provisions to allow repaving of existing, non-compliant test tracks with the ISO 10844:2011 standards. This supersedes document GRB/2012/9.