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| Document Title | UN R117: Proposal for a Supplement 4 to the 04 Series of amendments | ||||||||
| Reference Number | GRBP-82-26 | ||||||||
| Date |
2 Sep 2025
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| Summary | Addresses a real-life situation that is not considered by current ice grip test conditions: the wet ice (or black ice) conditions. | ||||||||
| Source(s) | ETRTO | ||||||||
| Rulemaking Area(s) | UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance | ||||||||
| Meeting(s) | |||||||||
| Related Documents | |||||||||
| GRBP/2025/26 | UN R117: Proposal for Supplement 4 to the 04 series of amendments | ||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | .pptx format | |||||||
| GAR server | .pdf format | .pptx format | |||||||