Chart of third-octave filter bands for use in discussions of audible signals for quiet vehicles.

OICA presentation on its review of feasible specifications currently under discussion among vehicle makers to describe the performance characteristics of an audible signal for quiet vehicles.

EC proposal (COM 856 final) aimed at reducing environmental noise by introducing a new test method for measuring noise emissions, by lowering the noise limit values, by including additional sound emission provisions in the type-approval procedure. Includes minimum noise for electric vehicles.

Review of current deliberations on key performance characteristics of an audible signal for quiet vehicles.

Proposal to introduce improved wet grip and snow tire provisions adopted at the March 2012 Forum session as amended by paragraph 65 of the session report. (Click the meeting link to access the session report.)

Correction to Revision 2 of UN R51, concerning an error in the reference to the Consolidated Resolution on the Construction of Vehicles (R.E.3).

Adopted by the Forum and integrated into the regulation via Revision 1.

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.

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)).

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.

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.

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

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

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.

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.

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.