Proposal to clarify the obligations of the manufacturer in relation to the provision of information regarding the location and safe use of emergency exits and fire extinguishers

Proposal for withdrawal based on to highlight the broader implications for vehicle design and usability for consumers resulting from this proposal. The lowering of the sideguard and reduction in ramp angle will give reduced flexibility for vehicles and trailer combinations in certain applications (i.e. loading roll-
on, roll-off vessels) and conflict with the road surface and local infrastructure (i.e. grounding out), which will lead to damage or reduced life of sideguards.

Proposal to clarify the definition of bi-directional vehicle.

Proposal to amend to meet the visibility requirements of UN R125, there is a notch in the lower edge of the black band of the front window in some vehicles. This is required to satisfy the requirements of UN-R125, but is considered to be meaningless for driving vision and needs to be corrected.

Proposal to resolve such an inconsistency with UN R125 to harmonize the location of the lower datum point (at 5°) of the angle of obstruction requirement in
paragraph 5.1.3. (at 4°).

Proposal for amendments to working document GRSG/2025/51, This proposal is aimed at allowing the certification for peculiar vehicle architectures (e.g.
high-performance vehicles), where generally the “R” point of the driver seat is not more than 450 mm from ground level. High-performance vehicles have peculiar characteristics. For instance, in order to reduce the aerodynamic drag the frontal surface is reduced. This leads to specific architectural solutions such as thinner and very tilted “A” pillar, smaller field of view, low volume cabin compartment, compared to mass-market vehicles. As a consequence, for high performance vehicles:

Modifications from GRSG-129-01 are taken on board to delete the Unique Identifier (UI) marking provisions.

Proposal to clarify opaque obscuration in indirect vision devices. The proposal inserts a definition of opaque obscuration and amends paragraph 15.1.4 to correct a reference to UN R43, Annex 24 rather than Annex 21. Paragraph 15.2.4.9.1 is amended to exclude areas of opaque obscuration from obstruction calculations for Class I rear-view devices, treating them similarly to mandatory rubber sealings used for window mounting.

Clarification request of the consolidated text of paragraph 6.5.10 as amended
by supplement 4

Proposal to amend UN Regulation No. 121 by inserting new paragraph 5.2.1.1 stating that fonts shown in Table 1 are not intended to be restrictive and other fonts may be substituted if legibility is maintained. Table 1, Note No. 20 is amended to clarify that the font of letters “OFF” or “ESC OFF” is not intended to be restrictive. The purpose is to clarify the text, provide flexibility, harmonize with international standards, and adapt to current digital work tools.

Proposal to amend para. 2.5.2. to change the lower vertical datum point from 5 above the horizontal to 4 above the horizontal, and amend Figure 3 to reflect this adjustment. The modification harmonizes the location of the lower datum point with the angle of obstruction requirement and resolves an inconsistency in UN Regulation No. 43.

Proposal to amend para. 5.1.1.3. to adjust the lower vertical datum point from 5 degrees to 4 degrees below the horizontal and update the corresponding figure in Annex 4, Figure 1. This harmonizes the location of the lower datum point with the angle of obstruction requirement in para. 5.1.3., resolving an inconsistency between the allowed area of obstruction and the mandated transparent area of the windscreen.

Proposal to amend the table in para. 5.1. to add rows for battery master switch de-energizing electrical systems, thermal shield for endurance braking system, electric power train, vehicle endurance braking, hydrogen fuel cell, and tyre pressure monitoring system; amend para. 5.1.1.8. to 5.1.1.8.2. to modify de-energizing electrical circuits systems requirements and add control device requirements for vehicles equipped with camera monitoring systems according to UN R461; amend para. 5.1.3.5.1. to modify general provisions for electric power train systems; amend para. 5.1.3.6. to modify thermal shield requirements for vehicle endurance braking systems; renumber para. 5.1.3.7. to 5.1.3.6.; amend para. 5.1.3.7.3. to modify shut-off devices requirements for hydrogen containers; insert new para. 5.1.7. to require tyre pressure monitoring systems according to UN R1412; restructure para. 10. transitional provisions to align with WP.29 guidelines and ADR-2027 implementation dates; and amend Annex 2 approval mark models.