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

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Date Reference Description Status
04 Jan 2021 GRBP-73-02
Proposal to amend the Worn Tyres informal working group Terms of Reference
Working Party Informal 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.
05 Jan 2021 WT-16-03/Rev.2
SRTT 16" tread depth wear evolution measurements
Informal Group Informal 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
05 Jan 2021 WT-17-02
Draft minutes of the 11 December WGWT working group session with test centers
Informal Group Report 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
05 Jan 2021 WT-17-03
Surface roughness studies on buffed tires: Lateral Scanning vs Circumferential Scanning
Informal Group Informal 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
14 Jan 2021 WT-17-01
Draft agenda for the 17th Worn Tyres working group session
Informal Group Agenda 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
19 Jan 2021 WT-16-03/Rev.3
SRTT 16" tread depth wear evolution measurements
Informal Group Informal 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
23 Mar 2021 WT-17-05/Rev.1
Effect of Tyre Mean Texture Depth on µ peak and Average Deceleration
Informal Group Informal 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
20 Jan 2021 WT-17-04
Status of the Worn Tyres working group work plan
Informal Group Informal 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
20 Jan 2021 WT-17-06
Attendance list from the 17th Worn Tyres working group session
Informal Group Report 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
20 Jan 2021 WT-17-07
Draft Worn Tyres working group status report to GRBP
Informal Group Informal 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
01 Mar 2021 WT-17-08/Rev.1
Final minutes of the 17th Worn Tyres working group session
Informal Group Report 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
21 Jan 2021 GRBP-73-08
Proposal to amend the Worn Tyres working group terms of reference
Working Party Informal 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.
21 Jan 2021 GRBP-73-11
ETRTO Tyre Performance Study
Working Party Informal 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.
21 Jan 2021 GRBP-73-16
Revised terms of reference for the Sound Measurement Uncertainties informal group
Working Party Informal 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
21 Jan 2021 GRBP-73-18
Status report of the Worn Tyres working group
Working Party Informal 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
21 Jan 2021 GRBP-73-19
UN R117: Proposal to introduce an Ice Tyre definition for C1 class tyres
Working Party Informal 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
27 Jan 2021 GRBP-73-22
Tyre industry preliminary assessment of wet grip on worn C2 and C3 tyres
Working Party Informal 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
27 Jan 2021 GRBP-73-24
Priorities of the Working Party on Noise and Tyres (GRBP)
Working Party Informal 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
28 Jan 2021 GRBP-73-27
Working group on Worn Tyres: Proposal for revised terms of reference
Working Party Informal 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
29 Jan 2021 GRBP-73-28
Draft list of main decisions during the 73rd (January 2021) GRBP session
Working Party Informal 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
17 Feb 2021 WT-18-01
Draft agenda for the 18th Worn Tyres working group session
Informal Group Agenda 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
19 Feb 2021 TFMU-09-01
Draft agenda for the 9th TFMU task force session
Informal Subgroup Agenda 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
19 Feb 2021 TFMU-08-04
Noise measurement uncertainties: Draft heavy commercial vehicle calculation sheet
Informal Subgroup Informal 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
20 Feb 2021 TFMU-08-06
Attendance list from the 8th TFMU informal group session
Informal Subgroup Report 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
19 Feb 2021 TFMU-09-02
Temperature effects on tyre/road noise– presentations from the STEER project
Informal Subgroup Informal 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
22 Feb 2021 WT-18-04
Worn tyres: Draft buffing procedure evaluation sheet
Informal Group Informal 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
21 Feb 2021 WT-18-02
Worn tyres: C2 and C3 considerations
Informal Group Informal 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
23 Feb 2021 TFMU-08-05
Draft report of the 8th TFMU informal group session
Informal Subgroup Report 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
24 Feb 2021 TFMU-09-05
Attendance list from the 9th Noise Measurement Uncertainties informal group session
Informal Subgroup Report 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
02 Mar 2021 WT-18-06/Rev.1
Minutes of the 18th Worn Tyres working group session
Informal Group Report 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
02 Mar 2021 WT-18-05
Attendance list from the 18th Worn Tyres working group session
Informal Group Report 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
02 Mar 2021 WT-18-03
Worn Tyres working group work plan status
Informal Group Informal 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
05 Mar 2021 WP.29-183-06
UN R117: Proposal to amend document WP.29/2021/8
World Forum Informal 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 replace "markings" by "approval mark" in paragraph 4.4.1. to clearly specify the intended application of the provision (i.e., to the approval mark, not to all markings).
30 Mar 2021 TFSL-01-01/Rev.2
Agenda for the first Sound Limits task force session
Informal Group Agenda 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
01 Apr 2021 TFSL-01-03/Rev.2
Guidelines for task force on Sound Limits
Informal Group Informal 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
22 Mar 2021 WT-19-01/Rev.1
Agenda for the 19th Worn Tyres working group session
Informal Group Agenda 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
22 Mar 2021 WT-19-02
Worn tyres: Concept for C2 and C3 tyres
Informal Group Informal 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
25 Mar 2021 WT-19-03
Worn tyres: Minutes of ETRTO-CATARC discussion on 9 March 2021
Informal Group Informal 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
23 Mar 2021 WT-19-04
Worn tyres: Wet grip test issue
Informal Group Informal 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 Presentation on wet grip test issue concerning to use of SRTT<sub>worn</sub> for RRT.
23 Mar 2021 WT-19-05
Attendance list from the 19th Worn Tyres working group session
Informal Group Report 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
25 Mar 2021 WT-19-06
Draft minutes of the 19th Worn Tyres working group session
Informal Group Report 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
25 Mar 2021 WT-19-07
Status of the Worn Tyres working group work plan
Informal Group Informal 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
30 Mar 2021 TFSL-01-02
Attendance list from the first future Sound Limits task force session
Informal Group Report 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
01 Apr 2021 TFSL-01-07
Draft report of the first Sound Limits task force session
Informal Group Report 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
07 Apr 2021 VRU-Proxi-17-17
Application dates of the safety measures under the General Vehicle Safety Regulation (EU) 2019/2144
Informal Group Informal Light-Duty Vehicle Braking Light Vehicle Braking Uniform Provisions Concerning the Approval of Passenger Cars with regard to Braking 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 Advanced Emergency Braking Systems Advanced Emergency Braking Uniform provisions concerning the approval of motor vehicles with regard to advanced emergency braking systems Tire Pressure Monitoring Systems Tire Pressure Monitoring Systems Uniform provisions concerning the approval of vehicles with regard to their tyre pressure monitoring systems Blind-spot information systems (BSIS) Blind spot detection Uniform provisions concerning the approval of motor vehicles with regard to the Blind Spot Information System for the Detection of Bicycles Automatic Emergency Braking for M1/N1 vehicles Light Vehicle AEBS Uniform provisions concerning the approval of motor vehicles with regard to the Advanced Emergency Braking System (AEBS) for M<sub>1</sub> and N<sub>1</sub> vehicles Cyber Security and Cyber Security Management Cybersecurity Uniform provisions concerning the approval of vehicles with regards to cyber security and cyber security management system Software Update Processes and Management Systems SW Updates Uniform provisions concerning the approval of vehicles with regards to software update and software update management system Reversing Motion Detection Reversing Motion Event Data Recorders EDR Uniform provisions concerning the approval of motor vehicles with regard to the Event Data Recorder UN Regulation on Commercial Vehicle Direct Vision CV Direct Vision Data Storage Systems for Automated Driving DSSAD
15 Apr 2021 TFMU-10-01
Agenda for the 10th Noise Measurement Uncertainties task force session
Informal Subgroup 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
16 Apr 2021 WT-20-01
Agenda for the 20th Worn Tyres informal group session
Informal Group Agenda 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
21 Apr 2021 WT-20-02
Consolidated comments on C2/C3 worn tyres wet grip test proposal
Informal Group Informal 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
21 Apr 2021 TFMU-10-03
UN R117: Comments on temperature selection and noise measurement uncertainties
Informal Subgroup Informal 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
22 Apr 2021 TFMU-10-04
Update on noise measurement uncertainties and heavy commercial vehicles
Informal Subgroup Informal 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
22 Apr 2021 TFMU-09-04
Draft report of the 9th Noise Measurement Uncertainties informal group session
Informal Subgroup Report 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
27 Apr 2021 WT-20-03
Worn Tyres informal group work plan status
Informal Group Informal 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
27 Apr 2021 WT-20-04
Attendance list from the 20th Worn Tyres working group session
Informal Group Report 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
27 Apr 2021 WT-20-05
Draft minutes from the 20th Worn Tyres informal group session
Informal Group Report 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