GAR | GRSG/2026/23

GRSG/2026/23

UN R125: Proposal for a Supplement to the original text, 01, 02, and 03 series of amendments

Source(s)

OICA

Date

29 Jan 2026

Status

Superseded

Subject

UN R125 Driver Forward Vision

Meeting(s)

GRSG | Session 131 | 13-17 Apr

Agenda item 14. (l) UN Regulation No. 125 (Forward Field of Vision of Drivers)

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.

Downloads

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Related documents

Excerpts from session reports

GRSG | Session 131 | 13-17 Apr

5. GRSG noted the proposal submitted by the expert from OICA (ECE/TRANS/WP.29/GRSG/2026/22) to harmonize the location of the lower datum point (5°) in paragraph 5.1.1.3 with the angle of obstruction requirement (4°) set out in paragraph 5.1.3. She also introduced document ECE/TRANS/WP.29/GRSG/2026/23 under agenda item 14(l), proposing a parallel amendment to UN Regulation No. 125 (Forward Field of Vision of Drivers). The expert from the Kingdom of the Netherlands considered that the proposal addressed an existing inconsistency but cautioned that it could introduce new ones, and therefore requested comprehensive feedback from all experts. Finally GRSG agreed to resume consideration on both proposals on the basis of revised proposals at its October 2026 session.

53. GRSG agreed to discuss ECE/TRANS/WP.29/GRSG/2026/23 under agenda item 3 (see paragraphs 5 to 8).