Working Party on Noise | Session 69 | 23-25 Jan 2019
Geneva
Agenda Item 7. (c)
UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)

19. The expert from the Russian Federation introduced a proposal that aligns the approval numbers and markings of UN Regulation No. 117 with the provisions of Schedule 4 of the revised 1958 Agreement (ECE/TRANS/WP.29/GRB/2019/4). GRB adopted the proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2019 sessions as a draft Supplement 10 to the 02 series of amendments UN Regulation No. 117.

20. GRB recalled that the former Working Party on Brakes and Running Gear (GRRF) decided to keep on its agenda ECE/TRANS/WP.29/GRRF/2016/43 and ECE/TRANS/WP.29/GRRF/2017/7 with agreed editorial corrections to UN Regulation No. 117, awaiting more substantial amendment proposals before submission to WP.29. GRB agreed that these editorial corrections should be submitted to WP.29 and AC.1 for consideration and vote at their June 2019 sessions in one package with the amendment proposals as referred to in para. 19 above.

21. The expert of France proposed a wet adhesion requirement for C1 tyres in a worn state (ECE/TRANS/WP.29/GRB/2019/6 and GRB-69-08). The proposal received comments from ETRTO (GRB-69-10). GRB also noted a recent study on used tyres (GRB-69-09). GRB was of the view that this topic should be pursued in the framework of a new IWG and adopted its Terms of Reference (GRB-69-23), as reproduced in Annex V to the session report. Various experts expressed their willingness to contribute to the activities of the newly established IWG. The experts from France and the European Commission volunteered to act as Chair and Co-Chair, respectively, while ETRTO agreed to provide secretariat support.

22. On behalf of the group of interested experts on snow tyre provisions, the expert from Germany reported on the group’s progress (GRB-69-19) and mentioned that they would submit an official document for consideration at the next session of GRB.

23. The expert from ETRTO recalled their proposal for draft amendments tabled at the previous session (ECE/TRANS/WP.29/GRVA/2018/5 and GRB-68-12) and requested GRB to postpone the discussion to the next session.

24. GRB took note of a proposal submitted by the expert from the Netherlands which introduces two extra stages 3 and 4 with limits for the rolling sound emission, wet grip performance and rolling resistance coefficient (ECE/TRANS/WP.29/GRB/2019/3). The Chair was of the view that, given the ongoing discussion on the issue within the European Union, it would be premature to modify the noise limits at this moment and proposed to revert to this document at a later stage.

Documentation
GRB-68-12 UN R117: Comments on the Supplement proposal GRVA/2018/5 (ETRTO)
GRB-69-08 UN R117: Amendment proposal to introduce of worn tyre provisions (France)
GRB-69-09 2017 Ernst & Young study on used tyres
GRB-69-10 UN R117: Comments on the proposal for worn-tyre provisions (GRB/2019/6) (ETRTO)
GRB-69-19 Status report on snow tyre provisions
GRB-69-23 UN R117: Draft terms of reference for an informal working group on wet grip performance of tyres in worn state (France)
GRB/2019/3 UN R117: Proposal for a Supplement (Netherlands)
GRB/2019/3 UN R117: Proposal for a Supplement (Netherlands)
GRB/2019/4 UN R117: Proposal for a Supplement to the 02 series of amendments (Russia)
GRB/2019/6 UN R117: Proposal for a Supplement (France)
GRRF/2016/42 Proposal for Supplement 10 to the 02 series of amendments to Regulation No. 117 (ETRTO)
GRRF/2017/7 Proposal for Corrigendum to Regulation No. 117 (ETRTO)
GRVA/2018/5 UN R117: Proposal for a Supplement (ETRTO)