Proposal to clarify manufacturer logo requirements across several paragraphs: confirming that non-illuminated graphic marks are not considered logos (para. 2.1.7.); permitting vehicle manufacturers to keep the inner portion of a front position lamp active when an AFS headlamp substitutes the outer portion (para. 5.12.1.4.); improving logo language for Light Signalling Devices approved to UN R148 (para. 5.30.1.); and clarifying that Road Illumination Devices approved to UN R149 shall not include a manufacturer logo (para. 5.30.2.).

Proposal to clarify and modernize lamp installation and component requirements in UN R48 and UN R148:

• Remove the “band/strip” terminology and expand the definition of a pair of lamps to cover full-width designs
• Remove the three-device maximum for Y-lamps to ensure technology neutrality
• Add a new paragraph §5.5.5 defining a pair as a two-lamp system
• Relocate light source requirements from UN R48 to UN R148 §4.7.3 to ensure at least one light source per side
• Remove the 0.8-metre minimum length requirement
• Clarify that definitions in §2.4.10 apply only to the relevant vehicle categories
• Update provisions for light source positioning in UN R148
• Clarify §4.8.1.3 in UN R148
• Add new sampling provisions in §4.8.11 for testing band/strip lamps

Proposal to introduce selective yellow as an permitted alternative to white for front position lamps and daytime running lamps in UN R48 and UN R148. Studies confirm that selective yellow performs equally to white for oncoming vehicle recognition and speed estimation. Unlike historical filament lamp applications where a yellow filter reduced luminous intensity, modern LEDs achieve the same intensity levels without reduction. Specific amendments include: updating §5.15 to reflect selective yellow options and removing a duplicated front fog lamp requirement; amending §§6.9.7 and 6.19.7 to deactivate selective yellow position and daytime running lamps on the relevant side during direction indicator activation; and aligning UN R148 (01 series) by amending §§5.1.7, 5.4.7 and Annex 1 accordingly. The colour boundaries for selective yellow are already defined in §2.11.1.2 and require no amendment. Further details can be found in informal document GRE-94-05.

Proposal to exclude retro-reflective devices and markings from the requirement of “Red light to the front” and “White light to the rear”.

Proposal to introduce a new “call for help” signal.

Proposal to amend para. 6.27.9.1. to permit the direction indicator lamp to be operated with the luminous intensity of its original specification when used as an answer-back signal, notwithstanding the 700 cd limitation on or above the HH line that applies to other approved lighting and light-signalling devices and exterior courtesy lamps. The proposal removes restrictions on direction indicator lamps used for answer-back activation of already type-approved light-signalling functions, while maintaining prohibitions on front fog lamps, rear fog lamps, and stop lamps.

Proposal to amend para. 6.24.9.2. to clarify that approved lamps emitting white light, rear position lamps, parking lamps, side-marker lamps and end-outline marker lamps may be switched ON as exterior courtesy lamps, and that paragraphs 6.24.9.3., 6.24.9.4., and the conditions of paragraphs 5.11. and 5.12. are not applicable to these approved lamps. The clarification confirms that paragraph 6.24.9.2. allows the coexistence and simultaneous operation of approved lamps without re-classifying them as exterior courtesy lamps and without subjecting them to exterior courtesy lamp-specific concealment requirements.

Proposal to amend para. 2.4.10. to expand the definition of a pair to include vehicles of categories M, N and O with one or more lamps extending from left to right; amend para. 2.4.11. and its sub-paragraphs to redefine single and multiple lamps to refer to interdependent lamps marked “Y”; amend para. 2.4.12. to redefine interdependent lamp system and add definition of interdependent lamp marked “Y”; amend para. 5.5. and its sub-paragraphs to add that a pair shall be considered as two lamps and to establish requirements for manufacturer logos; amend para. 5.7.2.2.; amend para. 5.7.2.3.; delete para. 5.7.2.4.; amend para. 5.18.2.; add new para. 4.7.3. to UN Regulation No. 148 to require that a pair containing one or more light emitting surfaces extending from left to right shall contain at least one light source on each side; and amend para. 4.8.1.3. to clarify photometric measurement procedures.

Proposal to prohibit to approval of a manufacturer logo: insert a new para. 5.12.1.4. permitting the remaining non-substituted part of a front position lamp to remain switched on when part of it is substituted with an adjacent adaptive front-lighting system lamp, provided the distance to the closest energized AFS lighting unit fulfils the requirements of para. 5.7.2.1., amend para. 5.30.1. to improve language on logos for light-signalling devices approved to UN R148, and insert a new para. 4.5.4. to clarify that the apparent surface of a lamp shall not include a manufacturer logo built by transparent or non-transparent components that influence the propagation of light emitted.

Proposal to amend para. 5.10.3. to exclude retro-reflective devices, retro-reflective markings, lighting devices fitted for interior lighting, and reversing projections from the requirements for “red light to the front” and “white light to the rear”. The proposal aims to eliminate unnecessary testing burdens on functions that never emit light by themselves and would always meet the emission requirement of less than 0.25 cd by definition. The exemption aligns with Vienna Convention provisions and reflects an original intent from over twenty years prior.