Report of the Working Party on Noise from its February 2012 session.

Report of the 56th session of the Working Party on Noise, held during 3-5 September 2011.

Table offering the Japanese position on new limit values for 03 series of amendments to Regulation No.51. The limit values are based on the TNO assessment study and German proposal with sub-categories proposed by Japan based upon a database of noise levels of Japanese vehicles.

This revised proposal of UN R9 from the IMMA contains the assimilation of the original regulations and their amendments and updates to take into consideration the revision of the test methods in UN R41.

This revised proposal of UN R63 from the IMMA contains the assimilation of the original regulations and their amendments and updates to take into consideration the revision of the test methods in UN R41.

Proposal for changes to the definitions of vehicle type (adding tire dimensions), ‘pre-acceleration’, and reference points (para. 2.11) and to the Annex 10 test procedures for medium to heavy vehicles.

Presentation by the China Automotive Technology and Research Center.

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

Russia proposes changes to the Consolidated Resolution on the Construction of Vehicles (R.E.3) concerning specifications of category G for road tractors, formulation of requirements on noise; measurement of vehicle internal noise, and recommended permissible levels of vehicle internal noise.

Presentation by the Norwegian Public Roads Administration on noise abatement activities of the Conference of European Directors of Roads.

Russia submitted this proposal to address concerns over uniformity in the concepts of
“vehicle type concerning noise”, terms “noise” and “sound” and a structure for presenting the provisions.

This proposal would revise the transitional provisions of the proposed 03 series of amendments to Regulation No. 51 (see GRB/2012/2). OICA believes the preceding text may create problems in the granting or accepting of type approvals under the previous series.

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.

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.

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.

Objectives for the proposed working group to develop a global regulation for “quiet road transport vehicles”. In principle, the GTR would prescribe acoustic measures(audible vehicle alert systems or AVAS) for moving vehicles in electric mode to signal their presence.

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

Japanese Ministry of the Environment presentation concerning the status of work on new motorcycle noise and tire rolling noise regulations.

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.

Overview of European Commission program to rework the regulatory environmental and safety framework for L-category vehicles.

European Commission presentation on plans for adopting new noise emissions test procedures, limit values, and minimum noise requirements for quiet vehicles.

CLEPA presentation on two alternatives for the application of “additional sound emission provisions” (ASEP) to replacement silencing systems.

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.

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.

Proposal to improve accuracy in the calculation of tire rolling resistance by the deceleration method.

This proposal aligns Figure 2 (Reference Point) in the Appendix to Annex 3 of UN R51 with the latest amendment of ISO 5130:2012 and with the draft 04 series of amendments to Regulation No.41 (ECE/TRANS/WP.29/GRB/2011/3).

This proposal aligns Annex 3, paragraph 2.3.2. with the latest amendment to ISO 5130:2012. The purpose of the amendment is to require the use of test surfaces with “no appreciable level of porosity”.

Updated proposal from Japan concerning new noise limit values for light vehicles, including low-powered and “mini” cars and trucks, under UN R51.

Proposed revisions to the Annex 3 test procedures and interpretation of resulting data.

Proposal for additional limit values based upon vehicle configuration.

Comments from the IMMA in response to the Russian proposal to re-define the use of terms “sound” and “noise” in the motorcycle noise regulation.

Proposal to revise UN R51 test procedures based on methodologies developed for Chinese regulation GB1495.

Proposal from IMMA to update the transition provisions of UN R9 in line with new recommendations by UNECE WP29.

Proposal from IMMA to update the transition provisions of UN R63 in line with new recommendations by UNECE WP29.

Document GRB/2012/08 from OICA proposes a text for the 03 series of amendments to
UN R51 intended to consolidate the GRB discussions as of the 55th session. The Netherlands proposes further improvements in order to incorporate the latest relevant ISO standards and to simplify the communication.

Table prepared by OICA highlighting various elements in the consideration of noise in UN Regulation Nos. 9, 28, 41, 51, 59, 63, 92, and 117.

Presentation considering tyre rolling sound emissions where pavement, tyre and vehicle all play major roles and where traffic flow management and driver behavior are taken into consideration.

German position paper arguing for greater objectivity and clarity over the use of the proposed “M+S”, “M.S”, “M&S”, and “Alpine” symbol with regard to “snow tyres” and “snow tyres for use in severe snow conditions”.

ETRTO remarks concering the 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.

CLEPA presentation on additional sound emission provisions for replacement silencing systems.

GRB review of the text adopted by the Working Party on Brakes and Running Gear (GRRF) to add specific performance requirements for C2 snow tires to UN R117.

GRB revision of the proposal for a corrigendum to draft Supplement 3 to the 02
series of amendments to Regulation No. 117 as a proposal for the 03 series of amendments based on documents GRB/2012/15 and GRB/2012/18.

Japanese explanation for placing Stage 3 limit values in brackets (signifying tentative proposals subject to further consideration) because of the contradiction between measures to reduce automotive noise and technical measures to meet the aims of fuel consumption/CO2 regulations.

Chinese views concerning the test methodology for new limit values under UN Regulation No. 51 on vehicle noise.

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

Version of the proposed 03 series of amendments to UN R51 that consolidates the latest changes agreed within GRB (GRB/2005/2/Rev.2, all “method B” amendments, including WP.29/2011/64, and the Additional Sound Emission Provisions (ASEP)).

Version of the proposed 03 series of amendments to UN R51 based on GRB/2012/2 (consolidated version of the O3 series as agreed by GRB to date) but incorporating further improvements as proposed in GRB-54-05 and GRB-54-06 from the previous GRB session.

Draft agenda for the September 2012 session of the Working Party on Noise.