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 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).

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.

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

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.

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.

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.

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.

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.

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.

Proposal from the Netherlands to update the requirements of the noise test track from
ISO 10844:1994 to ISO 10844:2011, including provisions for the repaving of non-compliant tracks. The proposal offers two alternatives: reference to ISO 10844:2011 or reproducing the whole text of the standard.

OICA submission proposing to align the current stationary vehicle noise emission measurement provisions of UN R51 with those in the latest draft international standard ISO/DIS 362.