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).

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

The documentation for this meeting has a gap between documents 10 and 12, suggesting the intention to post a document presented during the session but not made available in electronic format.

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.

Submission by the GRB secretariat to correct an editorial error where the noise test track specifications should refer to the requirements of ISO 10844:2011 rather than “Annex 4” as stipulated in the original draft.

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.

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.

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

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.

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”.

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.

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.

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

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.

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.