CLEPA presentation of the results of its noise-emission tests on seven vehicles comparing original equipment and replacement (aftermarket) silencing systems (mufflers) under the “Additional Sound Emissions Provisions” test procedure.

Revised presentation by the China Automotive Technology and Research Center (CATARC) on proposed new noise limit values.

Updated JASIC presentation in support of Japanese positions for the 03 series of the UN regulation on vehicle noise (UN R51). The presentation addresses a three-stage, six-year transition to more stringent noise limitations and proposes additional vehicle subcategories.

Draft recommendations of the Informal Working Group on Quiet Road Transport Vehicles (QRTV) concerning the viability of “quiet vehicle” audible acoustic alerting systems, their acoustic parameters and the prospects for a harmonized global technical regulation.

Revised version of the scope, objectives, and procedures for the proposed working group on global noise standards for hybrid, electric, and similar “quiet vehicles”.

Proposal of transitional provisions for the 03 series of UN R51 on vehicle noise. Importantly, the proposal seeks to address the handling of transitions and extensions between the 02 and 03 series, perhaps offering a template for transitional provisions in general.

Netherlands presentation to explain the background and rationale behind the working documents GRB/2012/02 and GRB/2012/03, respectively addressing the current status of decisions in GRB and proposals for further improvement (based on GRB and ISO work) to UN R51 on vehicle noise.

ETRTO proposals to align the definitions in UN R30, R54 and R117 (documents GRRF/2011/13 and 14) raised comments from France (document GRRF-71-31). This document offers a basic “snow tyre” definition/markings plus a more precise definition/markings for tyres used in severe snow conditions.

Proposal to revise document GRRF/2012/5 concerning C1, C2, and C3 rim measurement, including the proposal of an Appendix 4.

Submission prepared by the United States outlining the background, scope, objectives, and organization of the proposed effort to develop harmonized pedestrian alert sound requirements for electric and hybrid-electric vehicles via a new UN global technical regulation.

Position of Japan concerning the further development of the International Whole Vehicle Type Approval system, including work on UN Regulations 34, 46, and 125 and possible support for GTR 6 (UN R43), WLTP GTR and UN R51.

Presentation on European Union plans for enhancing and updating EU vehicle noise regulations to take effect from 2015 and 2018.

Text prepared by the United States of America requesting the development of a new GTR on quiet road transport vehicles.

Proposal adopted by the Working Party on Brakes and Running Gear (GRRF) at its seventy-second session recommending changes in the definition of the measuring rim for C1, C2 and C3 tyres.

Proposal adopted and submitted by the Working Party on Brakes and Running Gear (GRRF) at its seventy-second session in order to add specific performance requirements for C2 snow Tyres.

Based on informal documents GRB-54-03 and GRB-55-01, Japan proposes noise limit values with some modification of the threshold of sub-categories as a possible basis for reaching a common position.

This proposal of amendments to UN Regulation No. 9 consolidates earlier versions of UN Regulation No. 9 and aligns the test methods with those introduced into UN Regulation No. 41.

Proposal from the Russian Federation to provide harmonized definitions for the terms “noise” and “sound” and also for a revised structure for introducing the provisions.

Proposal based on Informal document GRB-54-03 submitted by the expert from Germany and on Informal document GRB-55-01 submitted by the expert from Japan, including limit values with some modification of threshold of subcategories, which could be the basis of a common position.

Proposed amendments to consolidate previous versions of UN Regulation No. 63 and to align the test methods with those introduced into UN Regulation No. 41.

Proposal to allow test tracks to be constructed per the 02 series of amendments to UN R117 or according to the new ISO standard 10844:2011.

Proposal from the European Tyre and Rim Technical Organisation (ETRTO) to align the text of Annex 6 of UN R117 to the ISO Standard 28580.

Proposal from the European Tyre and Rim Technical Organisation (ETRTO) to amend the snow test method for C3 Tyres.

Consolidated version of the proposed 03 series of amendments to UN R51, including OICA remarks on updating references to Annex 9 and concerning the Annex 2 qualification of the vehicle to be tested in each instance.

Draft recommendations from the informal group on Quiet Road Transport Vehicles pursuant to their deliberations on the risks such vehicles poses to vulnerable road users.