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| Document title | UN R125: Proposal for a Supplement to the original text, 01, 02, and 03 series of amendments | ||||||||||
| Date | 29 Jan 2026 |
Proposal to resolve a longstanding inconsistency in UN R125 between the lower datum point (§5.1.1.3, set at 5°) and the obstruction requirement (§5.1.3, set at 4°), by aligning the lower datum point to 4° while retaining upper and lateral aspects of §5.1.1. unchanged. The 5° datum point has never been used for any technical requirements beyond serving as a reference point, while the 4° obstruction requirement has prior precedent. As this is a vehicle rather than component requirement, the datum point is also proposed for deletion from UN R43, retaining it solely in UN R125. |
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| Source(s) | OICA | ||||||||||
| Status | Formal GR review | ||||||||||
| Rulemaking area(s) | |||||||||||
| Regulatory impact |
Original text | Supplement 5
01 series of amendments | Supplement 4
02 series of amendments | Supplement 4
03 series of amendments | Supplement 1
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| Meeting(s) | |||||||||||
| Related documents | |||||||||||
| GRSG/2026/22 | UN R43: Proposal for a Supplement 13 to the 01 series of amendments (Formal GR review) | ||||||||||
| Downloads: | UNECE server | .pdf format | .docx format | GAR server | .pdf format | .docx format | |||||