Working Party on Noise and Tyres

Session 71 | Geneva | 28-31 Jan 2020

GRBP to note the report from the TF MU on its aim to harmonize measures for evaluating systematic errors and random errors to improve the test procedures.

The text proposed by the Chairman of TFMU for the guidelines on the objectives and rules of procedure of the task force.

ETRTO proposal for the replacement of the current Standard Reference Test Tyre as it is being phased out as production will stop mid of 2020. Snow performance test in R117 currently requires SRTT14 as a reference tyre. SRTT14 needs to be replaced and test procedure amended.

ETRTO report on the study on the Dimensional Requirements for tyres with radial or run flat structure after having performed the load speed endurance test. ETRTO proposes to amend the UN Regulations No 30, 54 [and 75] by removing the requirements for tyres with radial and run flat structure.

ETRTO proposal for amending tyre marking method by the removal of the use of wording “moulded” in the marking clause as this is only one of the various technical solutions currently available.

The text prepared by the expert from the International Motorcycle Manufacturers Association (IMMA) to amend UN Regulation No. 41-04 (up to Supplement 7), in order to clarify the implications of footnote one on the requirements specified in Annex 4.

Proposal for amendment by IMMA to address the issue of stationary noise measurements on a single sided dual exhaust system.

Text submitted by the expert of EC to update on the study and investigate the sound level limits of M- and N-category vehicles in Europe.

Proposal from expert from France for amendment to Supplement 1. Tyre pressure monitoring system (TPMS) could refer to UN R64 (till 02 series of amendment) and/or R141.
R64 series 02 concerns temporary use spare unit, run-flat tyres and/or a run-flat system and/or a tyre pressure monitoring system for M1 or N1 category vehicles. R141 is dedicated M1-category vehicles approved for their TPMS

Information from Chair on 2020 schedule of meetings of interest to GRBP experts

Presentation by the Secretariat giving the general information and WP.29 highlights

In line with Regulation (EU) 2019/2144, proposal to expand the scope of UN R142 to establish requirements for tyre-pressure monitoring systems for category M₂, M₃, N₂, N₃, O₃ and O₄ vehicles.

Proposal to introduce tyre-pressure monitoring system tyre installation requirements for all vehicle categories in Regulation (EU) 2019/2144 following the requirements in UNECE Regulation No. 142.

The text was prepared by the expert from the International Motorcycle Manufacturers Association (IMMA) to amend the ASEP requirements

The text was prepared by the expert from the International Motorcycle Manufacturers Association (IMMA) to amend Supplement 6 to 04 series of amendments, aiming to minimize proliferation of approval numbers

Presentation by the expert of IMMA supporting the proposed amendment to ASEP (GRBP-71-17)

The status report submitted by the group of interested experts (GOIE) from Finland, Germany, Japan, Norway, Russian Federation, BIPAVER, ETRTO and OICA

Update by the Chair of Task Force Measurement Uncertainty (TF MU) on the strategic approach to handle measurement uncertainties in UN Regulations

Text by IWG ASEP for revision of ASEP as a future concept of real driving

Text submitted by chair of IWG ASEP for the status report

Supporting information regarding the proposal for the type approval of special-use tyres designed for severe snow conditions.

Status report

Proposal to clarify that it is not necessary to require an ISO 10844 asphalt track surface in cases where the vehicle is at a standstill provided that the surface is dense and without substantial absorption characteristics.

The text submitted by the experts from the European Tyre and Rim Technical Organisation (ETRTO) to amend the Japanese proposal for a Supplement to the 02 series of amendments (ECE/TRANS/WP.29/GRBP/2020/6)

Changes to the proposal to align definitions across tyre regulations and align the regulations with technological progress, correct an editorial error, and clarify that the ply rating is not applicable to T-type temporary use tyres.

The text submitted by the Chairman of TF MU for the draft terms of reference

4. The expert from IMMA proposed amendments with the aim to minimize proliferation of approval numbers from models with differences in vehicle exhaust and silencing systems (ECE/TRANS/WP.29/GRBP/2019/25). The experts from Germany, Japan, Russian Federation and Spain commented on the proposal. The Chair invited IMMA to prepare a revised document for the next session.

Proposal to align definitions across tyre regulations and align the regulations with technological progress (see document GRRF-82-21), correct an editorial error, and clarify that the ply rating is not applicable to T-type temporary use tyres.

In document GRRF/2016/40, an ellipsis “…”, indicating that the remainder of the sentence was to be retained, was omitted in the proposed amendment to paragraph 3.2.1. As a result, the remaining text was unintentionally removed following adoption of the proposal. A similar error resulted from the adoption of document WP.29/2017/9 regarding paragraph 4.9.2. This proposal also reintroduces the unintentionally deleted text.

Proposal to align the provisions for retreaded tyres marked using the three-peak-mountain snow-flake (3PMSF) symbol with the amendment proposals to UN R117 (GRBP/2019/19) and to complement GRBP/2019/17.

Proposal to adapt the rolling-sound measurement procedures to accommodate special C2 tyres presenting a section width wider than 200 mm, aspect ratio lower than 55, rim diameter code lower than 15 and without any dual fitting indication (i.e. the front size 175/75R15 LT and the rear size 235/50R14 LT or the front size 175/75R15 LT and the rear size 265/50R14 LT).