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GRRF-74-04
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Proposal to amend the document GRRF/2012/19
(ETRTO)
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Description
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Amendments to the proposal to amend the snow test method for C3 tyres in order to prescribe the wider of the possible speed ranges. Corrects wording to replace “blocking differential” with “differential lock” and mandatory use of differential lock in certain cases.
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Document Reference Number: GRRF-74-04
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Submitted by: ETRTO
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Document date: 23 Jan 13
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Document status: Superseded
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More information
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Related regulations or topics
Related documents
WP.29/2013/59 | Proposal for Supplement 5 to the 02 series of amendments to Regulation No. 117
Related discussions
The proposal under agenda item 4.9.4 should be considered at the November 2013 session.
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23 Jan 2013
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Working Party
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Informal Documents
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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
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Amendments to the proposal to amend the snow test method for C3 tyres in order to prescribe the wider of the possible speed ranges. Corrects wording to replace “blocking differential” with “differential lock” and mandatory use of differential lock in certain cases.
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GRRF-74-0004
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GRRF-74-08
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Proposal of editorial corrections to document GRRF/2013/9
(EC)
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Description
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Editorial corrections to the proposal prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.
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Document Reference Number: GRRF-74-08
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Submitted by: EC
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Document date: 11 Feb 13
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More information
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Related regulations or topics
Related discussions
74th GRRF session (19-22
Feb 2013)
24. The expert from ETRTO introduced GRRF-74-04 amending ECE/TRANS/WP.29/GRRF/2012/19 on the testing procedure for snow tyres of the category C3. He also introduced GRRF-74-43 showing some test results justifying their proposal. GRRF agreed on this proposal as amended by Annex VI and requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their June 2013 sessions as draft Supplement 4 to the 02 series of amendments to Regulation No. 117.
25. The expert from ETRTO presented a joint proposal by France, EC and ETRTO (GRRF-74-08) amending ECE/TRANS/WP.29/GRRF/2013/9 on wet grip testing provisions for Tyres of category C2 and C3. GRRF agreed on this proposal as amended in Annex VII to this report and requested ETRTO to provide technical data supporting the choice of the proposed limit values for the next GRRF session in September 2013. GRRF requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their November 2013 sessions as draft Supplement 5 to the 02 series of amendments to Regulation No. 117.
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11 Feb 2013
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Working Party
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Informal Documents
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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
|
Editorial corrections to the proposal prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.
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GRRF-74-0008
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GRRF-74-43
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Tests supporting provisions for the snow test for tyres of category C3
(ETRTO)
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Description
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Relation between L&R slip ratio difference and ACC without TCS and Differential Lock and Comparison between Traction Control System “ON” and “OFF”.
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Document Reference Number: GRRF-74-43
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Submitted by: ETRTO
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Document date: 20 Feb 13
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More information
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Related regulations or topics
Related discussions
74th GRRF session (19-22
Feb 2013)
24. The expert from ETRTO introduced GRRF-74-04 amending ECE/TRANS/WP.29/GRRF/2012/19 on the testing procedure for snow tyres of the category C3. He also introduced GRRF-74-43 showing some test results justifying their proposal. GRRF agreed on this proposal as amended by Annex VI and requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their June 2013 sessions as draft Supplement 4 to the 02 series of amendments to Regulation No. 117.
25. The expert from ETRTO presented a joint proposal by France, EC and ETRTO (GRRF-74-08) amending ECE/TRANS/WP.29/GRRF/2013/9 on wet grip testing provisions for Tyres of category C2 and C3. GRRF agreed on this proposal as amended in Annex VII to this report and requested ETRTO to provide technical data supporting the choice of the proposed limit values for the next GRRF session in September 2013. GRRF requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their November 2013 sessions as draft Supplement 5 to the 02 series of amendments to Regulation No. 117.
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21 Feb 2013
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Working Party
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Informal Documents
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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
|
Relation between L&R slip ratio difference and ACC without TCS and Differential Lock and Comparison between Traction Control System “ON” and “OFF”.
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GRRF-74-0043
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GRRF/2013/9
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Proposal for amendments to Regulation No. 117
(EC, France, and ETRTO)
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Description
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Text prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) in order to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.
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Document Reference Number: GRRF/2013/9
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Submitted by: EC, France, and ETRTO
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Document date: 07 Dec 12
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More information
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Related regulations or topics
Related discussions
74th GRRF session (19-22
Feb 2013)
24. The expert from ETRTO introduced GRRF-74-04 amending ECE/TRANS/WP.29/GRRF/2012/19 on the testing procedure for snow tyres of the category C3. He also introduced GRRF-74-43 showing some test results justifying their proposal. GRRF agreed on this proposal as amended by Annex VI and requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their June 2013 sessions as draft Supplement 4 to the 02 series of amendments to Regulation No. 117.
25. The expert from ETRTO presented a joint proposal by France, EC and ETRTO (GRRF-74-08) amending ECE/TRANS/WP.29/GRRF/2013/9 on wet grip testing provisions for Tyres of category C2 and C3. GRRF agreed on this proposal as amended in Annex VII to this report and requested ETRTO to provide technical data supporting the choice of the proposed limit values for the next GRRF session in September 2013. GRRF requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their November 2013 sessions as draft Supplement 5 to the 02 series of amendments to Regulation No. 117.
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12 Dec 2012
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Working Party
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Formal Documents
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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
|
Text prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) in order to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.
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GRRF/2013/0009
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