Session 76 | Geneva | 17-21 Feb 2014
7. (b) Regulation No. 117
WP.29/2013/66 | Proposal for Supplement 6 to the 02 series of amendments to Regulation No. 117 Text as adopted by the Working Party on Brakes and Running Gear (GRRF) at its 75th session based upon a proposal by the European Commission, France and ETRTO to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.
GRRF-76-05 | Japan comment for R117-02 C3 threshold Pursuant to discussions on setting uniform wet-grip requirements for C3 snow tires, Japan affirms that its national data supports a minimum wet-grip value of 0.65 (as proposed in document WP.29/2013/66: Proposal for Supplement 5 to the 02 series of amendments).
GRRF-76-07 | Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) Proposal to maintain a wet grip index of 0.95 for class C2 normal tires and regular snow tires under the discussions to establish wet grip provisions and testing procedures for category C2 and C3 tires.
GRRF-76-08 | Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) Proposal to maintain a wet grip index of 0.65 for class C3 normal tires and regular snow tires under the discussions to establish wet grip provisions and testing procedures for category C2 and C3 tires.
GRRF-76-11 | Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) European Commission proposal for minimum wet grip limits on Class C3 tyres. The EC notes that the wet grip (G) index is intended as a precautionary measure that would set a minimum level already satisfied by products currently on the market. In anticipation of improvements in new tires, the EC proposes to add a notation "Wet grip index (G) ≥ 0.80 may be considered for new types of tyres 96 months after the entry into force date of Supplement 5 to the 02 series of amendments, based on robust field data and cost-effectiveness analysis."
GRRF-76-12 | Summary of the ad hoc meeting on R117 C2 and C3 tyres Wet Grip thresholds Report of the special meeting held in Paris on 21 November 2013 to discuss wet grip values for Class C2 and C3 tyres.
GRRF-76-26 | Proposal for Supplement 6 to the 02 series of amendments to UN Regulation No. 117 Proposal to elaborate on the concept of tyre deceleration (dω/dt) in the test procedures. The Russian Federation has developed a “Deceleration Calculator” for use in the UN R117 procedures. Following work by an ad hoc group (including NAMI, UTAC, and ETRTO) formed to review and validate this tool, Russia has prepared this new proposal, modifying the version (document GRB/2013/10) submitted at the last GRB session. The changes primarily concern the explanation of the tool rather than the basic mathematical equations.
GRRF-76-28 | Method of Deceleration Measuring and Data Processing for Tyre Rolling Resistance Determination Full report of the ad hoc group on the development of the method for determining tire rolling resistance using the variant dω/dt method.
WP.29-162-05 | Proposal for amendments to the draft Supplement 6 to the 02 series of amendments to Regulation No. 117 Submission of the wet grip limit values for Class C3 tires as agreed to within the Working Party on Brakes and Running Gear (GRRF). These values were originally proposed in document WP.29/2013/66.
GRRF-76-27 | Method of Deceleration Measuring and Data Processing for Tyre Rolling Resistance Determination Report of the ad‐hoc working group organized in accordance with the recommendation of the 58th GRB session to consider testing and evaluation of the variant method using the dω/dt form proposed by Russia.
GRRF-76-05
Japan comment for R117-02 C3 threshold
16 Jan 2014 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 Pursuant to discussions on setting uniform wet-grip requirements for C3 snow tires, Japan affirms that its national data supports a minimum wet-grip value of 0.65 (as proposed in document WP.29/2013/66: Proposal for Supplement 5 to the 02 series of amendments). GRRF-76-0005
GRRF-76-07
Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) (Denmark and Netherlands)
24 Jan 2014 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 maintain a wet grip index of 0.95 for class C2 normal tires and regular snow tires under the discussions to establish wet grip provisions and testing procedures for category C2 and C3 tires. GRRF-76-0007
GRRF-76-08
Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) (Denmark, Germany, and Netherlands)
24 Jan 2014 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 maintain a wet grip index of 0.65 for class C3 normal tires and regular snow tires under the discussions to establish wet grip provisions and testing procedures for category C2 and C3 tires. GRRF-76-0008
GRRF-76-11
Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) (EC)
31 Jan 2014 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 European Commission proposal for minimum wet grip limits on Class C3 tyres. The EC notes that the wet grip (G) index is intended as a precautionary measure that would set a minimum level already satisfied by products currently on the market. In anticipation of improvements in new tires, the EC proposes to add a notation "Wet grip index (G) ≥ 0.80 may be considered for new types of tyres 96 months after the entry into force date of Supplement 5 to the 02 series of amendments, based on robust field data and cost-effectiveness analysis." GRRF-76-0011
GRRF-76-12
Summary of the ad hoc meeting on R117 C2 and C3 tyres Wet Grip thresholds (EC)
31 Jan 2014 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 Report of the special meeting held in Paris on 21 November 2013 to discuss wet grip values for Class C2 and C3 tyres. GRRF-76-0012
GRRF-76-26
Proposal for Supplement 6 to the 02 series of amendments to UN Regulation No. 117 (Russia, UTAC, ETRTO, and NAMI)
12 Feb 2014 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 elaborate on the concept of tyre deceleration (dω/dt) in the test procedures. The Russian Federation has developed a “Deceleration Calculator” for use in the UN R117 procedures. Following work by an ad hoc group (including NAMI, UTAC, and ETRTO) formed to review and validate this tool, Russia has prepared this new proposal, modifying the version (document GRB/2013/10) submitted at the last GRB session. The changes primarily concern the explanation of the tool rather than the basic mathematical equations. GRRF-76-0026
GRRF-76-27
Method of Deceleration Measuring and Data Processing for Tyre Rolling Resistance Determination (NAMI and UTAC)
12 Feb 2014 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 Report of the ad‐hoc working group organized in accordance with the recommendation of the 58th GRB session to consider testing and evaluation of the variant method using the dω/dt form proposed by Russia. GRRF-76-0027
GRRF-76-28
Method of Deceleration Measuring and Data Processing for Tyre Rolling Resistance Determination (NAMI and UTAC)
12 Feb 2014 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 Full report of the ad hoc group on the development of the method for determining tire rolling resistance using the variant dω/dt method. GRRF-76-0028