The Working Party on Lighting and Light-Signalling (GRE) prepares regulatory proposals on light-related vehicle safety systems for consideration by the World Forum/WP.29. The GRE enables more than 70 government, industry, and other interested experts to cooperate in the development of regulatory requirements through joint research and validation of test procedures.
GRE works especially closely with the International Automotive Lighting and Light-signalling Expert Group (more commonly known as the GTB), a global group of vehicle manufacturers, system suppliers, light source manufacturers, testing laboratories and academia working to assure the effective regulation and safety of automotive lighting systems and their installation.
GRE usually convenes in March and October of each year.
| UN R48: Supporting information for GRE/2026/9 |
| Reference Number: GRE-94-06 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| UN R48: Supporting information for GRE/2026/7 |
| Reference Number: GRE-94-04 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R149: Supporting information for GRE/2026/12 |
| Reference Number: GRE-94-09 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R48 and R148: Supporting information for GRE/2026/8 |
| Reference Number: GRE-94-05 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R149: Supporting information for GRE/2026/11 |
| Reference Number: GRE-94-08 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R48 and UN R148: Supporting information for GRE/2026/6 |
| Reference Number: GRE-94-03 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R149: Supporting information for GRE/2026/13 |
| Reference Number: GRE-94-10 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R148 and R149: Supporting information for GRE/2026/10 |
| Reference Number: GRE-94-07 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R150: Supporting information for GRE/2026/14 |
| Reference Number: GRE-94-11 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| RE5: Supporting information for GRE/2026/15 |
| Reference Number: GRE-94-12 |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| UN R150: Supporting information for GRE/2026/3 |
| Reference Number: GRE-94-02 |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 18 Feb 26 |
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Relevant to
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| View full document file for more information |
| RE5: Proposal for Amendment 13 |
| Reference Number: GRE/2026/15 |
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Proposal to introduce new LED light source categories L2 and L3 in R.E.5. Further details can be found in informal document GRE-94-12. |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 12 Feb 26 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R149: Proposal for a Supplement to the 01 series of amendments |
| Reference Number: GRE/2026/5 |
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roposal to expand the application of glare-free Adaptive Driving Beam (ADB) for category L3 motorcycles under UN R149, by introducing additional driving beam classes aligned with UN R53 motorcycle requirements and adding symmetrical passing beam-based photometric requirements below the H-H line (Table 13, Part C). Recent technological advances have made ADB electronics more practical for a broader range of motorcycles, and these amendments aim to enhance traffic safety by reducing glare while maintaining adequate rider visibility. |
| Submitted by: IMMA |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 12 Feb 26 |
| Document status: Formal GR review |
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| UN R48: Proposal for Supplements to the 08 and 09 series of amendments |
| Reference Number: GRE/2026/4 |
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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.). |
| Submitted by: OICA |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 12 Feb 26 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R150: Proposal for a Supplement to the 01 series of amendments |
| Reference Number: GRE/2026/3 |
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Proposal to correct errors and omissions in the 01 series of amendments. Further details can be found in informal document GRE-94-02. |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 12 Feb 26 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R48: Proposal for a Supplement to the 06, 07, 08 and 09 series of amendments |
| Reference Number: GRE/2026/2 |
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Proposal to introduce a new “call for help” signal. |
| Submitted by: Czech Republic |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 12 Feb 26 |
| Document status: Formal GR review |
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| UN R10: Proposal for a Supplement to 07 series of amendments |
| Reference Number: GRE/2026/16 |
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Proposal to amend the text to enable its application to ADS vehicles. |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 12 Feb 26 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R48: Proposal for a Supplement to the 08 series of amendments |
| Reference Number: GRE/2026/9 |
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Proposal to align the Exterior Courtesy Lamps provisions of the 08 series amendments with those of the 09 series. |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 10 Feb 26 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R48: Proposal for a Supplement to the 06, 07, 08, and 09 series of amendments |
| Reference Number: GRE/2026/7 |
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Proposal to exclude retro-reflective devices and markings from the requirement of “Red light to the front” and “White light to the rear”. |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 10 Feb 26 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R149: Proposal for a Supplement to the 01 series of amendments |
| Reference Number: GRE/2026/12 |
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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. |
| Submitted by: GTB |
| Meeting Sessions: 94th GRE session (27-30 Apr) |
| Document date: 10 Feb 26 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |