Proposal to allow the use of test tracks constructed according to the new ISO 10844:2011.

Proposal to align the definition of the temperature correction coefficient “K” in UN Regulation No. 117: 02 series of amendments with ISO 28580. The issue is linked to tire categories: ISO refers only to load index while UN R117: 02 series refers to class C1, C2 and C3 tires.

European Tyre and Rim Technical Organisation (ETRTO) proposal to amend the snow test method for C3 tyres in order to prescribe the wider of the possible speed ranges.

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.

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.

Proposal from the Netherlands to update requirements on the noise test track to the from ISO 10844:1994 to ISO 10844:2011, including provisions for the repaving of non-compliant tracks. The proposal offers two approaches: reference to IS0 10844:2011 or reproduction of the ISO text.

Recommendations of the original informal group on quiet road transport vehicles to the Working Party on Noise (document GRB/2012/6).

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 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.

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.