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| Document Title | Tests supporting provisions for the snow test for tyres of category C3 | ||||||||
| Reference Number | GRRF-74-43 | ||||||||
| Date |
21 Feb 2013
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| Summary | Relation between L&R slip ratio difference and ACC without TCS and Differential Lock and Comparison between Traction Control System “ON” and “OFF”. | ||||||||
| Source(s) | ETRTO | ||||||||
| Rulemaking Area(s) | UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance | ||||||||
| Meeting(s) | |||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | ||||||||
| Excerpts from session reports related to this document | |||||||||
| GRRF | Session 74 | 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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