Consolidated Resolution on the Common Specification of Light Source Categories (R.E.5):
| Document | Regulation | Proposal | Comments | Conclusion |
| 2025/15 GRE 93-04 | R.E.5 | Introduction of new LED categories: LRR8A and LRR8B for Stop/tail lamp application: RedPower: 1.0 /4.0 W .Luminous flux: 10 / 120 Lm. |   | Adopted. Sent to WP.29 for consideration at its March 2026 session |
| 2025/17 GRE 93-04 | Amendment proposals that introduce new light emitting diode (LED) replacement light source categories for front fog applications: H8_LEDr, H16_LEDr HB4_LEDr. | LED light sources for replacement of equivalent filament light sources. For aftermarket only. |
Six formal proposals and eleven informal documents have been done to modification vehicle lamp installation regulation (UNECE R48 & R86):
| Document | Regulation | Proposal | Comments | Conclusion |
| 2025/10 | R48 S6,7, 8 & 9 | § 5.27 does not apply to LED light sources approved according to UN Regulation № 128. | §5.27. R48 manages the lifetime of filament light sources (used for driving beam, passing beam, front and rear position lamps, stop lamps, because the lifetime of filament light sources has a strongly reduced lifetime at higher voltages. The lifetime of LED light sources has no strong dependence on voltage since LEDs are “current driven”. | Adopted. Sent to WP 29 for consideration at its March 2026 session. R48 S 6,7,8 &9 |
2025/18 | R48 S10 & R149 S2 | R149: The purpose to restrict the possibility of approving a road illumination device with a manufacturer logo: The internal structure of the optical components and/or the texture of the outer lens function shall not incorporate a manufacturer logo. R48: Light signalling device incorporating a logo shall be approved according to R148 S1 and subsequent series. R149 & R48: Transitional provisions. | No Manufacturer logo in a Road Illumination device. Transitional provisions for R48: M, M1, O1, O2: – TPs → Sept 1st, 2027. – Extension of 08 &09 series → Sept 1st, 2030. N2, N3, O3 et O4: – TPs → Sept 1st, 2028. – Extension of 08 &09 series → Sept 1st, 2031. | OICA considers it is a new restriction => a new series of amendments with transitional provisions. Germany, the Netherlands, and EC consider that was only a clarification => Supplement without transitional provisions. GRE did not reach a conclusion and agreed to continue the discussion at the next session. |
| 2025/20 GRE-93-22, GRE-93-27-Rev.2 | R48 S10 & R149 S2 | R149: It is an alternative to the outright ban of luminous logos. Specific requirements for manufacturer logos in road illumination devices, like those established for light-signalling devices under R148. Enclosed light emitting surface of the logo < 100 cm². A maximum luminous intensity for logos in road illumination devices <140cd. R48: Light-signalling devices incorporating a logo shall be type approved according to R148 S1 and subsequent series. Road illumination devices incorporating a manufacturer logo shall be type approved according shall be type approved according to R149 S2 and subsequent series. R149 & R48: Transitional provisions. | Transitional provisions for R48: M, M1, O1, O2: – TPs → Sept 1st, 2027. – Extension of 08 &09 series → Sept 1st, 2030. N2, N3, O3 et O4: – TPs → Sept 1st, 2028. – Extension of 08 &09 series → Sept 1st, 2031. | |
| 2025/21 GRE-93-26 | R149 S2 R150 S2 | R149: The purpose is to restrict the possibility of approving a road illumination device with a manufacturer logo: The internal structure of the optical components and/or the texture of the outer lens function shall not incorporate a manufacturer logo. R150: The shape of the illuminating surfaces (…) and shall not represent a manufacturer logo.” | Topic already addressed during GRE 91 & GRE92 (see report GRE91 VII. A 13 & 13 and GRE92 VII.A 13 & 14). No Manufacturer’s logo for Road illumination devices and Reflex reflector devices. |
| Document | Regulation | Proposal | Comments | Conclusion |
| 2025/19 and GRE93-10 | R48 S6,7,8 &9 | Amendment of §6.5.7: “Direction-indicator lamps shall switch ON independently of the other lamps. All direction-indicator lamps on one side of a vehicle shall be switched ON and OFF automatically and/or by means of one control and shall flash in phase.” | Ensure that the operation of direction-indicator lamps is consistent and in phase, regardless of whether activation is manual or automatic. Align the provisions of Regulation № 48 with the functionalities permitted under UN Regulation № 171 (may autonomously activate direction-indicator lamps). | Adopted as amended by GRE93-10 rev1 Sent to WP 29 for consideration at its March 2026 session. R48 S 6,7,8 &9. |
| 2024/12 Rev 2. GRE-92-11-Rev.2 GRE-93-28-Rev.1 | R48 S8 & 9 | Introduction of “Work Lamp and its technical characteristics” (Installation rules and activation). | Already submitted to GRE 91 & GRE 92. See GRE Report GRE-92 VII.A.15. GRE 92 proposed to address the topic to the upcoming session. GRE experts, had to make comments and suggestions to France. New lighting function in R48 §6.28. Manually activated. Operating tell-tale mandatory. Automatically switched OFF if the forward speed of the vehicle exceeds [15] km/h. The proposal was modified to focus on functional requirements at the vehicle level. The intensity requirements are deleted. | OICA suggests that the proposal should be introduced in a new series of amendments and that transitional provisions. Japan made some remarks. GRE agreed on the technical requirements in the proposal and decided to continue consideration of transitional provisions only, with support of OICA. The discussion shall be continued at the next session. |
| GRE-89-24 | R48 | X | Already addressed during the previous Session 89, 90, 91 & 92. (see GRE Report GRE-92 VII.A.20) Concern expressed by France about the colour perceived by the other road users, which can be different from the measurements. GRE Experts expect considerations of the GTB Group Photometry.  | No new development on this topic. |
| GRE93-07 | R48 S6 & 9 | Editorial modification of § “6.5.3.1(a): M2, M3, N2, and N3 of above 6 m and up to including 9 m in length one additional category 5 device per side is optional;” | For clarification: Avoid potential differences in interpretation among Contracting Parties during the type approval procedure. | Adopted. Sent to WP 29 for consideration at its March 2026 session. R48 S 6,7,8 &9. |
| GRE 93-21 | R 48 | Topic: “prohibited if not allowed in r48 | Proposes to add: “The fitting of any lighting and light-signalling device or function, other than those mentioned in paragraph 6, is prohibited for the purposes of granting a type-approval according to this Regulation”. OICA proposed to add several exceptions. |
IWG SLR shall continue consideration. GRE experts should provide their contributions |
| Document | Regulation | Proposal | Comments | Conclusion |
| GRE 93-23 | R 48 | Status report of TF – LUPC (Lamp Under Parked Conditions) | GRE Experts are requested for some feedback on the informal document GRE 93-25. | For information |
| GRE 93-25 | R 48 | Draft proposal of new series of R48 | Introduction of “Energy status indicator”, “lamp test mode” List of the lamp which may be activated under park conditions. | GRE experts should provide comments by mid-January 2026 to the Task Force. TF LUPC shall prepare a revised proposal for consideration at the next session. |
Three official proposals and three informal documents have been done to amend the Light Signalling Devices regulation (UNECE R148):
| Document | Regulation | Proposal | Comments | Conclusion |
| 2025/11 | R148 S1 | Editorial modification of §3.3.4.6. The name of the manufacturer and the identification number of the light source control gear are required to be marked on the electronic light source control gear and not on the lamp. | Clarification and correction of an unintentional error. |
Adopted. Sent to WP 29 for consideration at its March 2026 session. R148 S1 |
| 2025/12 | R148 S1 | Amendment of Annex 3, paragraph 1.1.: The measurement of luminous intensity shall be mathematically rounded down to three significant digits. | It specifies the calculation method so that it becomes clear how to calculate acceptance values in the photometric grid. | |
| 2024/21 Rev.1 | R148 S01 R48 S6,7, 8 & 9. | Introduction of the Direction indicator projectors. – Removed the possibility to have sequential activation – Clarified that the projected pattern shall be in a straight line – Deleted side direction indicator projections. Now maximum two per side for M and N vehicles (front and/or rear) and maximum one per side for trailers (rear only) – Removed the possibility to activate direction indicator projections when the hazard warning signal is switched ON – Limited the switch ON and duration of direction indicator projections up to 15 km/h – Clarified switching conditions according to the direction of motion | Already addressed during GRE-90, 91 & 92 (See GRE report GRE-92 VIII.A.24). The Experts were not convinced that the proposed projections would bring benefits pointed out the need of real-life experiences. Positions of projections on the ground (front DI projectors).     Basic element  | France, Germany, Italy and Japan supported the proposals. United Kingdom and Northern Ireland reiterated their reservation. The cycling community should be consulted on the benefits of the proposed technology. GRE adopted the proposal. Sent to the June 2026 sessions of WP.29. However, the proposal shall be reviewed at the next GRE session in April 2026. Meanwhile, GTB, UK and Ireland would consult the cycling community. |
| Document | Regulation | Proposal | Comments | Conclusion |
| GRE93-12 | R148 | The proposal deals with the detection in a towing vehicle of the failure of LED trailer direction indicators. Insert a § 5.6.5.2. “In case the applicant declares to the technical service / type approval authority that the direction indicator lamp is compliant with the requirements for failure recognition specified in ISO 13207-1:2012 this shall be indicated in the communication form in Annex 1.” | For the detection of the failure of these direction indicator lamps of a trailer in a tractor, complementing requirements were provided to cover the case where the failure generates a low drop of intensity. The link to the requirements to ISO 13207-1 (2012) was added in case a trailer might be used by a vehicle of category T to ensure the failure recognition of the direction indicator to the vehicle. See GRE93-13 below. | CEMA shall submit a working document for consideration at the next session. |
| GRE93-13 | X | Trailer LED direction indicators failure – Detection on agricultural tractors. | Issue addressed by CEMA: Failure detection of the direction indicator. Detection of LED direction indicators failure can be an issue, as the drop of intensity is extremely low. Proposal: The topic to be discussed in GTB. Target: Submit to GRE as informal document. | |
| GRE93-16 | 148S01 | Modification of §4.5.3.1: 4.5.3. Position lamps or daytime running lamps, which are reciprocally incorporated with another function, using a common light source, and designed to operate permanently with an additional system to regulate the intensity of the light emitted, are permitted. 4.5.3.1. However, in the case of a rear position lamp reciprocally incorporated with a stop lamp, these functions shall either: (a) be provided by | GTB pointed out their ongoing internal discussions on similar issues and proposed to include the Chinese proposal in a new document to be submitted to the next GRE Session. China agreed |
Three formal proposals and one informal document have been done to amend the Road Illumination Devices regulation (UNECE R149):
| Document | Regulation | Proposal | Comments | Conclusion |
| 2025/21 GRE-93-26 | R149 S2 R150 S2 | See above the paragraph dealing with UNECE R48. | ||
| 2025/13 | R149 S1 | 3.3.2.4.8: …If both passing beam and driving-beam headlamps constitute a matched pair, then “YHCR” may be marked. 3.3.2.4.9: … If both passing-beam and driving-beam headlamps constitute a matched pair and they have same Class BS, CS or DS, then “YCR-BS” for Class BS headlamps, “YCR-CS” for Class CS headlamps or “YCR-DS” for Class DS headlamps may be marked.” | The marking symbol “Y” has been introduced for matched pair of lighting functions. Clarification of how to mark “Y” a headlamp that has both driving beam and passing beam. | These proposals are Adopted. Sent to WP 29 for consideration at its March 2026 session. R149 S1 |
| 2025/14 | R149 S1 | Annex 6 §2.2: …vertically scanning through the horizontal part of the “cut-off” in angular steps of 0.05° or smaller at either a measurement distance of: … … To determine the maximum sharpness and linearity, measurements shall be performed by vertically scanning through the horizontal part of the “cut-off” in angular steps of 0.05° or smaller, … | For a higher angular resolution, it is possible to reduce the steps between 2 measurements: “0.05° or smaller”, to improve the measurement accuracy of the cut-off position and sharpness of the passing beam or front fog lamp beam. | |
One formal proposal and two informal documents have been done to amend the Electro-Magnetic Compatibility regulation (UNECE R10):
| Document | Proposed by | Regulation | Proposal | Comments |
| 2025/25 | IWG-IMC | R10 S7 | Adopted. As amended by GRE93-20 Sent to WP 29 for consideration at its March 2026 session | |
| GRE 93-19 | Status report | For information | ||
| GRE 93-20 | IOCA | R10 S7 | Amendment to 2025/25 | Adopted |
One formal proposal and one informal document have been done to amend the Special Warning Lamp regulation (UNECE R65):
| Document | Regulation | Proposal | Comments | Conclusion |
| 2025/16 GRE-93-14 | R65 S00 | Introduction in R65 of the rules for the installation of amber warning lamps on agricultural tractors or non-road mobile machineries. 
| The target is to harmonise in the UNECE R65, the rules and requirements for installation of this device. They are currently subject to national rules in few countries. | GRE experts doubted that recommendations would be compatible with strict requirements for type approval in UN Regulations. to put recommendations (or guidance) as documents for reference on a dedicated webpage. CEMA shall update their proposal for the next session. |
Three formal proposals and three informal dealing with Automation of the vehicles. (R45 and R48):
| Document | Regulation | Proposal | Comments | Conclusion |
| 2025/22 GRE-93-31-Rev.1 | R45 | Modification of §“6.5.4.: the control of the headlamp cleaning device may be manual or automatic. If a driver’s seat is fitted, the control of the cleaning device shall be operable from the driver’s seat. | GRE adopted the three proposals as amended by the informal documents. Sent to the June 2026 sessions of WP.29. leaving GRE a possibility of revisiting the proposal at the next session | |
| 2025/23 GRE-93-30-Rev.1 | R48 S9 | The aim of the proposal is to introduce vehicles with a driving system, which controls its operation or may be operated by driver support features or automated driving features or by an Automated Driving System (ADS). | New definitions. New general paragraphs 5.36. to 5.41. are added to clarify when the driver is active or manual actions by a driver are required or the application of Automated Driving System (ADS) features or handling of information, etc. The presence for main beam in the case for vehicles of the categories X and Y is optional. The relevant safety procedures are introduced for vehicles if an ADS is active. | |
| 2025/24 GRE-93-32 | R48 S8 | Same as 2025/23 for R48 Series 08 |
| Document | Regulation | Proposal | Comments | Conclusion |
| GRE-93-03 | X | Progress report. SAE J3134 Automated Driving System (ADS) Marker Lamp. Update on Five-Year Document Review Activity. 
| The SAE J3134 was released in May 2019 and is undergoing Five-Year Review. Modifications: – Addition of rear and side marker ADS lamp requirements. – Revise figures to add rear and side ADS marker lamp requirements. – Add geometric visibility requirements… Time Schedule: – Aug 2025: Document passed the Committee ballot. – Currently: Council ballot in progress. – End 2025: Expected publication. | For information |
| GRE93-05 | X | Progress report of the Informal Working Group, Simplification of Lighting Regulations | – Apparent surface: Clarify the existing text + introduction of luminance method. – Technological neutrality of light sources. – Improved visibility of the rear direction indicators / stop lamps: when activated at the same time – Work in progress to improve the situation. – Editorial review and improvement of the consolidated text + Question to GRE: How to manage the Transitional provisions in the different series of R48? – Alignment of Regs. 53, 74 and 86 with R48. – Align provisions in Reg. 48 with those in Regs. 53 and 74 on the subject “prohibited if not allowed”. Guidance from GRE is expected. | Presentation of the progress report. Questions dealing with the management of the transitional provisions of R48. GRE will ask for recommendations to GRE Chair to ask guidance from the Committee for Coordination of Work (AC.2) at its session in November 2026. |
| Document | Regulation | Proposal | Comments | Conclusion |
| GRE93-06 | Progress report of the Task Force “Glare Prevention”. | Identified subjects: – Literature examination – Periodical Technical Inspections (PTI) – ADB/AFS – Reg. 48 (not yet activated). Current results: – Literature: 45 Literature items identified. 12 literature items examined, 33 to go. Final report in Feb 2026. – PTI: avoid misaimed headlamps. guarantee durability and robustness Provisions for PTI. Measurement issues during PTI – ADB/AFS: Kick-off session – Definition of detailed scope of the HWT and approach to follow. Further discussion in Feb 2026 | GRE noted the status report of the Task Force on Glare Prevention (TF GP). |
| Document | Regulation | Proposal | Comments | Conclusion |
| GRE93-08 | X | General information and WP.29 highlights and Highlights of the recent session(s) of WP.29. | Main points to be highlighted: New UN Regulation on Emergency Lane Keeping System (ELKS) adopted. France provided an update on the safety of airbags | For information |
| GRE93-09 | X | Energy Saving Opportunities in Automotive Lighting. GTB Activities Status Report. | Conclusion of a New study performed in 2025 by TU Darmstadt (Germany): “DRL/ passing-beam” switching threshold reduction: 500lx. Adaptive DRL: The luminous intensity < 400cd OK in some specific conditions. Adaptive passing-beam – new AFS class, focusing in the first 25m (sufficient environmental illumination, low or zero speed, built-in areas). Next step: Deeper investigations on the impact on safety. Energy saving to be assessed. | For information. No remark from the GRE experts. |
| GRE93-11 | 1968 Vienna Convention | Proposed amendments to the 1968 Vienna Convention to harmonize the requirements related to vehicle lighting and light signaling devices with the provisions of the R48 on Lighting Installation. | 1968 Vienna Convention has not been revised. Some paragraphs contradict the provisions of R 48. Some others require updates to align with current terminology and technical standards. Others will become inconsistent with amendments that are under consideration for adoption. These discrepancies should be addressed to ensure regulatory coherence. | GRE Secretary to convey these provisions to the Global Forum for Road Traffic Safety (WP.1). GRE Chair to ask AC.2 and/or WP.29 for guidance |
| GRE93-15 | X | Regulation 100 « Electric power trained vehicles” 5.2.3: Warning in the event of failure in REESS: …Notwithstanding the provisions above in case of vehicles of category O, the trailer shall provide an optical and/or audible warning to the driver of the towing vehicle…”. The optical warning is located on the trailer. It must warn the driver. It must therefore be seen by the driver. Question addressed by France: Should we define the “optical warning to the driver of the towing vehicle”? How to do this? | Visual signal on the trailer seen by the driver of the towing vehicle:
| GRE did not support these optical warnings. outside of the vehicle. |
| Document | Regulation | Proposal | Comments | Conclusion |
| GRE93-17 | X | Automated Driving Systems (ADS) Marker Lamp. Hybrid Regulation: – Lamp requirements – Installation requirements. Technical characteristics for Front, Rear and side marker lamp. Installation: Mainly the activations rules are described. | Photometry: Daytime: 50 / 300 cd. Nighttime (min/max) 10 / 125 cd. (front). 
Visibility angles: [60° / 60°] [60° / 45°] Mounting Height. Color: “blue-green” / “turquoise” | France Japan and CLEPA supported the 360° visibility of the ADS marker lamps. GRVA expects a new UN Regulation on ADS in mid-2026. The Regulation on the marker lamps should be ready by that time. |
| GRE93-18 | X | Status Report from Task Force “Autonomous Vehicle Signalling Requirements” (AVSR). Presentation of the outline of the regulation № XYZ “Uniform provisions concerning the approval of ADS Marker Lamps for power-driven vehicles [and their trailers] as well as with regard to the installation of these light signalling devices”. | For information | |
| GRE 93-24 | X | Informal Working Group on Children Left In Vehicles | Australia introduced to GRE the Informal Working Group “Children Left In Vehicles (IWG CLIV)”. The Group is drafting a new Global Technical Regulation which defines the requirement of audible and visual warning in case of detection of a CLIV event. | For information. GRE experts should participate in the IWG CLIV work |
| GRE 93-29 | X | Subjects under consideration by the Working Party on Lighting and Light-Signalling (draft Priority of Work of GRE for WP.29 level) | The list of priorities is adopted and will be included into the WP.29 Program of Work for 2026. |
