Corrections to the proposal from the Russian Federation to elaborate on the concept of tyre deceleration (dω/dt) in the test technology.

Text as adopted by the Working Party on Brakes and Running Gear (GRRF) at its 73rd session to align the definition of the temperature correction coefficient “K” in UN R117:02 series of amendments with ISO 28580.

Text prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) in order to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.

Proposal from the Russian Federation to elaborate on the concept of tyre deceleration (dω/dt) in the test technology. The proposal is based on informal document GRB-56-02 from the previous GRB session.

Proposal by the Chair and Vice-Chair of GRB to allow the use of the test track complying with ISO 10844:2011 in a new series of amendments to the UN R117. This is based upon document GRB-56-20 from the previous GRB session.

Proposal to update noise test-track requirements from ISO 19844:1994 to ISO 10844:2011 and incorporates transitional provisions to allow repaving of existing, non-compliant test tracks with the ISO 10844:2011 standards. This supersedes document GRB/2012/9.

(Duplicate version of the previous WP.29-158-09 removing some tracking marks.)
GRRF-edited version of the GRB amendments to document WP.29/2012/54 – Proposal for Supplement 2 to the 02 series of amendments to Regulation No. 117 (Tyres – Rolling resistance, rolling noise and wet grip).

Document WP.29/2012/54 is the GRRF proposal for Supplement 2 to the 02 series of amendments to Regulation No. 117 in order to add specific performance requirements for C2 snow tires. The GRB has subsequently revised the proposal with regard to its noise provisions.

Updated GRB revisions to the proposal for Supplement 2 to the 02 series of amendments to Regulation No. 117 adopted by the Working Party on Brakes and Running Gear (GRRF) at its seventy-second session in order to add specific performance requirements for C2 snow tires.

Proposal submitted by ETRTO and prepared with the Netherlands, UK, and Poland to amend UNECE Regulation 117 in order to allow the use of test tracks complying to ISO 10844:2011, including transitional provisions.

Presentation on the tire industry position concerning the implementation of new minimum requirements for wet grip on C2 and C3 tyres

Presentation arguing for the establishment of minimum wet grip requirements for snow tires.

GRB Proposal to amend UN Regulation 117 in order to allow the use of IS0 10844:2011 compliant test tracks, including transitional provisions and based on documents GRB/2012/15 and GRB/2012/18.

Proposal to include wet grip adhesion provisions for C2 and C3 tyre categories.

GRB revisions to the proposal adopted by the Working Party on Brakes and Running Gear (GRRF) at its seventy-second session in order to add specific performance requirements for C2 snow tires.

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.

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.

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.

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”.

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.

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

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.

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.

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

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.

Proposal from the European Tyre and Rim Technical Organisation (ETRTO) to amend the snow test method for C3 Tyres.

Proposal from the European Tyre and Rim Technical Organisation (ETRTO) to align the text of Annex 6 of UN R117 to the ISO Standard 28580.

Proposal to allow test tracks to be constructed per the 02 series of amendments to UN R117 or according to the new ISO standard 10844:2011.

Proposal adopted and submitted by the Working Party on Brakes and Running Gear (GRRF) at its seventy-second session in order to add specific performance requirements for C2 snow Tyres.

Proposal adopted by the Working Party on Brakes and Running Gear (GRRF) at its seventy-second session recommending changes in the definition of the measuring rim for C1, C2 and C3 tyres.

Proposal to revise document GRRF/2012/5 concerning C1, C2, and C3 rim measurement, including the proposal of an Appendix 4.

ETRTO proposals to align the definitions in UN R30, R54 and R117 (documents GRRF/2011/13 and 14) raised comments from France (document GRRF-71-31). This document offers a basic “snow tyre” definition/markings plus a more precise definition/markings for tyres used in severe snow conditions.

Japanese Ministry of the Environment presentation concerning the status of work on new motorcycle noise and tire rolling noise regulations.