Full report of the ad hoc group on the development of the method for determining tire rolling resistance using the variant dω/dt method.

Report of the ad‐hoc working group organized in accordance with the recommendation of the 58th GRB session to consider testing and evaluation of the variant method using the dω/dt form proposed by Russia.

Proposal to elaborate on the concept of tyre deceleration (dω/dt) in the test procedures. The Russian Federation has developed a “Deceleration Calculator” for use in the UN R117 procedures. Following work by an ad hoc group (including NAMI, UTAC, and ETRTO) formed to review and validate this tool, Russia has prepared this new proposal, modifying the version (document GRB/2013/10) submitted at the last GRB session. The changes primarily concern the explanation of the tool rather than the basic mathematical equations.

Submission of the wet grip limit values for Class C3 tires as agreed to within the Working Party on Brakes and Running Gear (GRRF). These values were originally proposed in document WP.29/2013/66.

Latest informal draft of the proposed global regulation to establish minimum sound requirements for quiet vehicles as a measure to improve pedestrian safety as being developed by the GTR-QRTV informal group and its drafting task force.

Proposal originally by OICA (document GRB/2014/2) to update requirements for the noise test track from ISO 19844:1994 (i.e. Annex 8 of this Regulation) to ISO 10844:2011 and to allow for repaving of existing, non-compliant test tracks to meet the ISO 10844:2011 standards as adopted by the Working Party on Noise (GRB) at its 59th session. This change concerns the measurement of vehicle passing noise.

Adopted position (2014/C 82 E/01 on 20 February 2014) by the Council of the European Union (Council Position (EU) No. 3/2014) with a view to the adoption of a regulation of the European Parliament and of the Council on the sound level of motor vehicles and of replacement silencing systems, and amending Directive 2007/46/EC and repealing Directive 70/157/EEC.

Working draft of proposed amendments to UN R51 in order to align its provisions with the latest EU noise requirements pursuant to the second informal working group session of 25 March 2014.

Working draft (pursuant to the third informal working group session of 6 May 2014) of proposed amendments to UN R51, based on the consolidated version of the regulation through the 02 series of amendments, in order to align its provisions with the latest EU noise requirements.

Working draft (pursuant to the third session of the Informal Working Group on UN Regulations Nos. 51 and 59) of the 02 series of amendments to UN R59 intended to align its provisions with the latest EU sound level requirements.

Prepared as an informal document for the 60th Working Party on Noise (GRB) session for discussion by the R51/59 informal working group at its 4th session.