Proposal for Supplement 1 to the 03 Series of Amendments to UN R125 (Forward Field of Vision), amending and superseding ECE/TRANS/GRSG/2026/8. The proposal introduces provisions for vehicles of categories X and Y, and vehicles equipped with an Automated Driving System (ADS). Vehicles of category Y without a driver are exempt from the Regulation. For vehicles of category X with manual driving modes, different provisions apply depending on operation method: remote-control operation is exempt; seated operation follows general provisions; and on-board operation not using a driver’s seat may use alternative requirements demonstrating equivalent safety levels.

Proposal from the GRSG task force on Automated Vehicles Regulation Screening to enable application of UN R125 to ADS vehicles, including the exemption of vehicles of subcategories X and Y.

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.