Session 73 | Geneva | 26-29 Jan 2021
5. (d) UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)

GRBP will consider two proposals tabled by the experts from ETRTO.

GRBP-73-19 | UN R117: Proposal to introduce an Ice Tyre definition for C1 class tyres

GRBP may resume discussion on the proposal submitted by the Group Of Interested Experts on snow tyre provisions (GOIE).

GRBP will be briefed on the activities of the IWG on Wet Grip Performance of Tyres in a Worn State (IWG WGWT) and will consider a proposal for its revised Terms of Reference, together with a complementary amendment submitted by the expert from EC.

GRBP-73-02 | Proposal to amend the Worn Tyres informal working group Terms of Reference Proposal to expand the scope of the activity to include C2 and C3 tyres.
GRBP-73-08 | Proposal to amend the Worn Tyres working group terms of reference Proposal to include requirements for wet grip of tyres of classes C2 and C3 in worn state to the scope of the working group activities.
GRBP-73-18 | Status report of the Worn Tyres working group
GRBP-73-22 | Tyre industry preliminary assessment of wet grip on worn C2 and C3 tyres
GRBP-73-27/Rev.1 | Working group on Worn Tyres: Proposal for revised terms of reference
GRBP/2020/16 | UN R117: Proposal for amendment
GRBP/2020/17 | UN R117: Proposal for amendment
GRBP/2019/14 | UN R117: Proposal for a Supplement to the 02 series of amendments Proposal from the group of interested experts to allow for the type approval of special-use tyres designed for severe snow conditions.
GRBP/2020/11 | UN R117: Proposal for revised Terms of Reference of the IWG WGWT (Wet Grip Performance for Tyres in a Worn State)
GRBP-72-02 | Worn tyres: Proposal for working group terms of reference
GRBP-73-02 | Proposal to amend the Worn Tyres informal working group Terms of Reference Proposal to expand the scope of the activity to include C2 and C3 tyres.
GRBP-73-08 | Proposal to amend the Worn Tyres working group terms of reference Proposal to include requirements for wet grip of tyres of classes C2 and C3 in worn state to the scope of the working group activities.
GRBP-73-11 | ETRTO Tyre Performance Study Overview of UTAC CERAM testing designed to consider the impact of additional tightening of tyre performance limits on the balance between legal requirements (rolling resistance, wet grip and rolling sound emission) and other performance aspects not subject to legal requirements.
GRBP-73-18 | Status report of the Worn Tyres working group
GRBP-73-19 | UN R117: Proposal to introduce an Ice Tyre definition for C1 class tyres
GRBP-73-22 | Tyre industry preliminary assessment of wet grip on worn C2 and C3 tyres
GRBP-73-27/Rev.1 | Working group on Worn Tyres: Proposal for revised terms of reference
GRBP/28/Rev.1
Draft list of main decisions during the 73rd (January 2021) GRBP session
01 Feb 2021 Working Party Report Pneumatic Tires Pneumatic Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Vehicles and their Trailers Motorcycle Noise Motorcycle Noise Uniform Provisions Concerning the Approval of Motor Cycles with regard to Noise Vehicle Noise Emissions Vehicle Noise Uniform Provisions Concerning the Approval of Motor Vehicles having at least Four Wheels with regard to their Noise Emissions Motorcycle and Moped Tires Motorcycle Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Cycles and Mopeds Retreaded Tires for Commercial Vehicles CV Retreaded Tires Uniform Provisions Concerning the Approval for the Production of Retreaded Pneumatic Tyres for Commercial Vehicles and their Trailers Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Passenger Car and Trailer Wheels Passenger Car/Trailer Wheels Uniform Provisions Concerning the Approval of Wheels for Passenger Cars and their Trailers Tire Pressure Monitoring Systems Tire Pressure Monitoring Systems Uniform provisions concerning the approval of vehicles with regard to their tyre pressure monitoring systems Audible Reversing Warning Systems Reversing Warning UN Regulation for the Approval of Studded Tyres Studded Tyres GRBP-2021-0028/Rev.1
GRBP-73-02
Proposal to amend the Worn Tyres informal working group Terms of Reference (EC)
04 Jan 2021 Working Party Informal Documents Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to expand the scope of the activity to include C2 and C3 tyres. GRBP-73-0002
GRBP-73-08
Proposal to amend the Worn Tyres working group terms of reference (ETRTO)
21 Jan 2021 Working Party Informal Documents Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to include requirements for wet grip of tyres of classes C2 and C3 in worn state to the scope of the working group activities. GRBP-73-0008
GRBP-73-11
ETRTO Tyre Performance Study (ETRTO)
21 Jan 2021 Working Party Informal Documents Vehicle Noise Emissions Vehicle Noise Uniform Provisions Concerning the Approval of Motor Vehicles having at least Four Wheels with regard to their Noise Emissions Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Overview of UTAC CERAM testing designed to consider the impact of additional tightening of tyre performance limits on the balance between legal requirements (rolling resistance, wet grip and rolling sound emission) and other performance aspects not subject to legal requirements. GRBP-73-0011
GRBP-73-16
Revised terms of reference for the Sound Measurement Uncertainties informal group
21 Jan 2021 Working Party Informal Documents Vehicle Noise Emissions Vehicle Noise Uniform Provisions Concerning the Approval of Motor Vehicles having at least Four Wheels with regard to their Noise Emissions Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance GRBP-73-0016
GRBP-73-18
Status report of the Worn Tyres working group
21 Jan 2021 Working Party Informal Documents Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance GRBP-73-0018
GRBP-73-19
UN R117: Proposal to introduce an Ice Tyre definition for C1 class tyres (ETRTO)
21 Jan 2021 Working Party Informal Documents Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance GRBP-73-0019
GRBP-73-22
Tyre industry preliminary assessment of wet grip on worn C2 and C3 tyres (ETRTO)
29 Jan 2021 Working Party Informal Documents Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance GRBP-73-0022
GRBP-73-24
Priorities of the Working Party on Noise and Tyres (GRBP)
29 Jan 2021 Working Party Informal Documents Motorcycle Noise Motorcycle Noise Uniform Provisions Concerning the Approval of Motor Cycles with regard to Noise Vehicle Noise Emissions Vehicle Noise Uniform Provisions Concerning the Approval of Motor Vehicles having at least Four Wheels with regard to their Noise Emissions Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Audible Reversing Warning Systems Reversing Warning GRBP-73-0024
GRBP-73-27/Rev.1
Working group on Worn Tyres: Proposal for revised terms of reference (EC, ETRTO, and France)
29 Jan 2021 Working Party Informal Documents Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance GRBP-73-0027/Rev.1