| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|
| Document Title | UN R117: Proposal for amendments | ||||||||
| Reference Number | GRBP-78-33 | ||||||||
| Date |
29 Aug 2023
|
||||||||
| Summary | Proposal to amend rolling resistance provisions with regard to heavy-duty-use light trucks. | ||||||||
| Source(s) | AAPC | ||||||||
| Rulemaking Area(s) | UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance | ||||||||
| Proposal Status | Informal GR review | ||||||||
| Meeting(s) | |||||||||
| Related Documents | |||||||||
| GRBP-77-23 | UN R117: Request for consideration of a special case during the 78th (August 2023) GRBP session | ||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | .docx format | |||||||
| Excerpts from session reports related to this document | |||||||||
| GRBP | Session 78 | 30 Aug-1 Sep 2023 |
24. The expert from AAPC recalled GRBP-77-23 from the previous GRBP session and presented GRBP-78-33 with modifications to the rolling resistance values for LT-marked tyres. According to him, for reasons of safety and durability, some heavy-duty pickup trucks in a specific geographical region require LT-marked C3 tyres with performance characteristics suited to their use in rough terrains and for industrial/agricultural purposes which result in rolling resistance values higher than specified for C3 tyres in general. Therefore, he proposed to make an exception for such LT-marked C3 tyres in the rolling resistance tables. 25. The experts from France, ETRTO and OICA pointed out the need to study the proposal in more detail. Some experts feared that the requested exception for one region may have global implications. GRBP invited AAPC to liaise with the interested experts with a view to bringing more elements into consideration at the next session. 24. The expert from AAPC recalled GRBP-77-23 from the previous GRBP session and presented GRBP-78-33 with modifications to the rolling resistance values for LT-marked tyres. According to him, for reasons of safety and durability, some heavy-duty pickup trucks in a specific geographical region require LT-marked C3 tyres with performance characteristics suited to their use in rough terrains and for industrial/agricultural purposes which result in rolling resistance values higher than specified for C3 tyres in general. Therefore, he proposed to make an exception for such LT-marked C3 tyres in the rolling resistance tables. 25. The experts from France, ETRTO and OICA pointed out the need to study the proposal in more detail. Some experts feared that the requested exception for one region may have global implications. GRBP invited AAPC to liaise with the interested experts with a view to bringing more elements into consideration at the next session. |
||||||||