By Eric Blusseau, DVN Regulation expert
The 94th GRE session will be held at the “Palais des Nations” in Geneva from 27th to 30th of April 2026. The agenda and the documents of the session are already available in the UNECE website.
Documents:
Simplification of Lighting and Light-Signalling UN Regulations.
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2026/03, GRE-94-02 | R150 S01 | Correction of errors and omissions in UN Regulation No. 150. | The R. 150, original series, had the same provisions for retroreflective devices of the “frozen” Regulations 3, 27, 69, 70 and 104. In the subsequent step of simplification, some errors occurred, which have been noticed during the type approval process based on R150 Series 01. |
Consolidated Resolution on the Common Specification of Light Source Categories (R.E.5):
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2026/15, GRE-94-12 | R.E.5 | Proposed by GTB. New LED light source categories L2 and L3 in R.E.5: L2:  Flux: 650lm, P= 6.5W L3:  Flux: 1000lm, P= 9.5W | The proposal introduces two new LED light source categories in R128, with dedicated specifications for low beam and high beam applications. L2 and L3 are current driven and have an integrated heatsink. A new cap/holder system has been defined in IEC60061-1 This IEC fit includes a new mechanical interface concept and a new electrical connector interface. |
Vehicle lamp installation regulation (UNECE R48 & R86):
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2026/02 | R48 S6,7 , 8 & 9 | Proposed by Czech Republic. Introduction of a new function: Call for help signal. “Simultaneous operation of all direction-indicator lamps and optionally of all stop lamps which shall flash in phase at a frequency of 4.0 ± 1.0 Hz. The signal shall be switched ON only after the activation of the Accident Emergency Call System defined in R144”. | The aim is to introduce a new lighting signalling function that could increase safety and save lives in the event of a serious emergency on the road – call for help signal activated at the same time as the e-call. | |
2026/04 | R48 S8 & 9 | Proposal from OICA. “Road Illumination Devices approved to UN Regulation No. 149 shall not incorporate a manufacturer logo.” “Light signalling device incorporating a logo shall be approved according to R148 S1 and subsequent series”. | The purpose to restrict the possibility of approving a road illumination device with a manufacturer logo. | |
| 2026/06, GRE-94-03 | R48 S6,7,8 & 9 R148 S01 | Proposed by GTB. Clarification of the meaning of pair of lamps in case of a design like a band or a strip. “one or more lamp(s), used for the same function, extending from the left- to the right hand side of the vehicle, is (…) considered a pair.” “A pair, constituted of one or more light emitting surface(s), extending from the left- to the right- hand side of the vehicle, shall contain at least one light source on each side.” | Some configurations which can be allowed by the proposal. At least, one independent light source on each side.  | |
| 2026/07, GRE-94-04 | R48 S6,7,8 & 9 | Proposed by GTB: “5.10.3. No account shall be taken of retro-reflective devices, retro-reflective markings, lighting devices fitted for the interior lighting of the vehicle and reversing projections.” | The proposed amendment is intended to exclude retro-reflective devices and markings from the requirement of “Red light to the front” and “White light to the rear”. |
| 2026/08, GRE-94-05 | R48 S6,7,8 & 9 R148 S01 | Proposed by GTB: Introduction of selective yellow as an alternative to white for front position lamps and daytime running lamps | ||
| 2026/09, GRE-94-06 | R48 S8 | Proposed by GTB: The exterior courtesy lamps may be switched ON/OFF manually or automatically. The exterior courtesy lamp may vary in luminous intensity and/or vary in apparent surface. The photometric characteristics of the exterior courtesy lamp(s) may vary in relation to the position of vehicle users. No sharp variation. The exterior courtesy lamp(s) shall not flash. Rear position lamps, parking lamps, side marker lamps and/or end-outline may be switched ON together with the exterior courtesy lamps | The amendment is intended to align the exterior courtesy lamps provisions of the 08 series of amendments with those of the 09 series. |
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2024/12/ Rev.2, GRE-93-28-Rev.1 | R48 S9 | Proposed by France with support of OICA. Introduction of “Work Lamp and its technical characteristics” (Installation rules and activation). Discussion on the transitional provisions. | Already submitted to GRE 91, GRE 92 & GRE 93. See GRE Report GRE-93 VII.A.17. GRE proposed to address the topic to the upcoming session. New lighting function in R48 §6.28. During the previous GRE Session, the technical requirements in the proposal were agreed and GRE decided to continue consideration of transitional provisions only. | |
| GRE-93-25 | R 48 | Proposed by LUPC: 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. | Already addressed during the previous session. |
UN Regulation No. 148 (Light-Signalling Devices):
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2026/10, GRE-94-07 | R148 S1 | Proposed by GTB: Clarification of grouped markings and labels. “4.1. For the additional approval markings specific to the device, labels may be used. Such labels shall be durable for the useful life of the device. Labels shall be clearly legible and their letters and figures shall be indelible. Additionally, labels shall be attached in such a manner that their fixing is durable for the useful life of the device, and the labels cannot be removed without destroying or defacing them.” | Similar proposal for UNECE R149 S1 (Light Signaling device is included in the proposal. Examples are shown and explained in the informal document 94-07. The use of labels for displaying the approval mark is already permitted in R10 (EMC), 45 (HL cleaners) and R132 (Retrofit Emission Control devices (REC)). |
UN Regulation No. 149 (Road Illumination Devices):
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2026/05 | R149 S1 | Proposed by IMMA: Adaptive driving beam for vehicles of category L3. “For ADB for vehicles of category L3, the luminous intensity shall meet the requirements of Class A, B, CS or DS in Table 5 and of paragraph 5.1.4.2.” | Additional driving beam classes as the foundational photometric requirements for adaptation. Additional photometric requirements below the H-H line based on symmetrical passing beam classes used for motorcycles of category L3. | |
| 2026/11 GRE94-08 | R149 S1 | Proposed by GTB. Failure detection and signalization requirement. “As a consequence of one or more element(s) for visible radiation stops emitting light, the resulting luminous intensity value in any of the photometric requirements is less | Clarification of the text. No technical impact. | |
| 2026/12, GRE-94-09 | R149 S1 | Proposed by GTB. “6.2.1.1. If not otherwise specified, no measured value deviates unfavorably by more than 20 per cent from the value prescribed in this Regulation and, for driving beams of class A, B or RA, if HV is situated within the isocandela 0.75 Imax” | The proposed solution aims to improve the structure of the text and its clarity. No technical impact on the requirements. | |
| 2026/13, GRE-94-10 | R149 S0 &S1 | Proposed by GTB. “Table 18 Class C – Bendlight – Category 1 – System Requirements”: “Table 21 Class V – Bendlight – Category 1 – System Requirements”:  etc… | In R149 (S0 & S1) some CoP values are slightly different from the Type Approval values, and some Tables also contain calculation errors. The proposed corrections aim to clarify the situation and avoid possible confusion. |
UN Regulation No. 150 (Reflex Reflector Devices):
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2026/14, GRE-94-11 | R150 S1 | Proposed by GTB: … | The proposal is intended to harmonize the marking location requirements with those of UN Regulation No. 148. |
UN Regulation No. 10 (Electro-Magnetic Compatibility):
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2026/16 | IWG-IMC |  | The proposal introduces automated driving systems (ADS) requirements into UN Regulation No.10. The purpose is to make sure that no electronic device in the vehicle will interfere with the ADS system and vice-versa. |
Other UN Regulations. Special Warning Lamp regulation (UNECE R65):
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2025/16 GRE-93-14 | R65 S00 | Submitted by CEMA during the previous session. Introduction in R65 of the rules for the installation of amber warning lamps on agricultural tractors or non-road mobile machineries.  | The proposal was submitted to GRE by CEMA during the previous GRE session. The target is to harmonize in UNECE R65, the rules and requirements for installation of this device. They are currently subject to national rules in few countries. An updated document submitted by CEMA is expected by GRE for the session. IWG-SLR should consider moving out Annex 11 from UN Regulation No. 150 to a new document for reference and requested IWG SLR to check if references to this Annex should be updated in UN Regulation No. 86. |
Pending Amendment Proposals:
| Documents | Regulations | Proposals | Comments | Conclusions |
| 2024/21/Rev.1 | R148 S01 R48 S6,7, 8 & 9. | Already submitted by GTB during the 92nd and 93rd sessions. 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.   | The proposal was already submitted during the previous GRE Session and adopted. Sent to the June 2026 sessions of WP.29. However, the proposal shall be reviewed at the upcoming GRE session. Meanwhile, GTB, UK and Ireland should have consulted the cycling community. | |
| 2025/23 93-30-Rev.1 2025/24 93-32. | R48 S8 & 9 | Proposed by TF AVSR. The proposals introduce in R48 vehicles which may be operated by the driver or by driver support features or by an Automated Driving System (ADS). | GRE adopted the proposals at the previous session but decided to revisit them at the upcoming one. The documents were drafted with the recommendations from TF-FADS (Task Force on fitness for ADS) of GRVA (Working Party on Automated / Autonomous and Connected Vehicles). | |
| 2025/22 93-31-Rev.1 | R45 | Proposed by TF AVSR. The proposal introduces in R45 the application to vehicles equipped with automated driving systems (ADS). “The control of the cleaning device | ||
| 92-13, 92-14, 92-15, 92-16, 92-17, 92-18 | R148, 149 and 150. | Proposed by the Netherlands. Package of amendment proposals to R148, 149 and 150 concerning the Unique Identifier (UI). | GRE adopted the package of amendment proposals and decided to merge those proposals with other possible amendment proposals to the same series of amendments before submitting to WP.29. |
