The Task Force on Lamps Under Parked Conditions examined proposed modifications to UN R48 regarding vehicle lamp test modes, focusing on energy status indicators for charging vehicles. Key discussions included: color specifications for indicators, multiple energy status indicator placement on vehicles, frequency requirements for flashing indicators, and apparent surface area values. The group debated whether to include Adaptive Front-lighting System modes in lamp test procedures. Multiple paragraphs were revised, deleted, or approved for further consideration at the next session scheduled for March 2026.

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 align the Exterior Courtesy Lamps provisions of the 08 series amendments with those of the 09 series.

Proposal to introduce a clarification of grouped markings and labels. Further details can be found in informal document GRE-94-07.

Proposal to correct inconsistencies and calculation errors in Conformity of Production (CoP) tables across both series of UN R149, which may otherwise cause confusion for manufacturers and technical services.

In UN R149-00, corrections include: deletion of erroneous maximum values at point 50L in CoP tables for Classes C, V and W Bend Light; correction of miscalculated 20% and 30% CoP minimum values for Classes C and V Bend Light Category 1; correction of the Class W non-bending mode maximum value at Segment 10 and its derived CoP values; and correction of rounding errors in Class R CoP minimum values.

In UN R149-01, corrections include: updating the Class W Bend Light CoP maximum at point BR to align with the type-approval table; correcting miscalculated Class R Bend Lighting CoP values; and fixing table note references in Annex 4 following the introduction of scientific notation in the 01 series.

Further details can be found in informal document GRE-94-10.

Proposal to clarify the 80% failure criterion for Conformity of Production (CoP) checks by confirming that CoP tables represent a simplified subset of the full Class C type-approval measurement points, and to exclude overhead requirements (items S50 and S100 in Tables 6 and 7) from the passing beam failure detection criterion, as these may be fulfilled by position lamps. Further details can be found in informal document GRE-94-08.

Proposal to improve the clarity and structure of Conformity of Production (CoP) requirements for driving beams in UN R149 by following the approach used in UN R123.

Proposal to amend UN R150-01 addressing three main issues. First, since the GRE-adopted proposal to delete the unique identifier (GRE-92-18) was not part of the March 2026 WP.29 submission, the regulation text requires amendment in the interim, though this may become unnecessary if merged with GRE-92-18. Second, the approval marking approach is aligned with UN R148 by including one example in the body text and referencing other arrangements in Annex 10, allowing deletion of the Table 1 reference and redundant ratio explanations from Figure A10-I. Third, the outdated requirement for function symbols to be placed diametrically opposite the approval number — inherited from UN R3 and R7 but already removed in UN R148 — is deleted from Annex 10, along with a clarifying amendment to the note below Figure A10-I to prevent inconsistent interpretations among technical services. Further details can be found in informal document GRE-94-11.