| Simplification of Lighting Regulations: Report of the 74th (September 2025) session |
| Reference Number: SLR-74-12 |
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The 74th SLR meeting (Brussels, 10–12 September 2025) reviewed baseline documents for Regulations 48, 53, 74, and 86, with participants improving draft texts on simplified paragraph structures and definitions. Key topics included correction of errors in Regulation 150 (formal proposal for GRE-94 April 2026), apparent surface simplification with support for Alternative A and luminance method consideration, improved visibility of daytime running lights (OICA drafting proposal for December session), and harmonisation of requirements regarding prohibited if not allowed (seeking GRE feedback). Technological neutrality for light sources was deferred to informal discussions. The 75th meeting is scheduled for 10–12 December 2025 in Brussels. |
| Meeting Sessions: 74th SLR session (10-12 Sep 2025) |
| Document date: 19 Aug 26 |
| Relevant to: UN Regulation No. 48 | Installation of Lighting and Lighting-Signalling Equipment, UN Regulation No. 53 | Installation of Motorcycle Lighting, UN Regulation No. 74 | Moped Lighting, UN Regulation No. 86 | Installation of Lighting and Lighting-Signalling Equipment on Tractors, WP.29 Regulatory Project | Simplification of Lighting Regulations, and UN Regulation No. 150 | Retro-reflective Devices and Markings (RRD) |
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| Simplification of Lighting Regulations: Agenda for the 74th (September 2025) session |
| Reference Number: SLR-74-01/Rev.1 |
| Meeting Sessions: 74th SLR session (10-12 Sep 2025) |
| Document date: 16 Sep 25 |
| Relevant to: UN Regulation No. 48 | Installation of Lighting and Lighting-Signalling Equipment, UN Regulation No. 53 | Installation of Motorcycle Lighting, UN Regulation No. 74 | Moped Lighting, UN Regulation No. 86 | Installation of Lighting and Lighting-Signalling Equipment on Tractors, UN Regulation No. 88 | Retro-reflective Tires for Two-wheeled Vehicles, WP.29 Regulatory Project | Simplification of Lighting Regulations, UN Regulation No. 149 | Road Illumination Devices (RID), UN Regulation No. 148 | Light-Signalling Devices (LSD), and UN Regulation No. 150 | Retro-reflective Devices and Markings (RRD) |
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| UN R48: Input on "apparent surface" discussions |
| Reference Number: SLR-74-05/Rev.1 |
| Submitted by: GTB |
| Meeting Sessions: 74th SLR session (10-12 Sep 2025) |
| Document date: 16 Sep 25 |
| Relevant to: UN Regulation No. 48 | Installation of Lighting and Lighting-Signalling Equipment and WP.29 Regulatory Project | Simplification of Lighting Regulations |
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| UN R53: Baseline document for a 05 series of amendments |
| Reference Number: SLR-74-09/Rev.1 |
| Submitted by: IMMA |
| Meeting Sessions: 74th SLR session (10-12 Sep 2025) |
| Document date: 16 Sep 25 |
| Relevant to: UN Regulation No. 53 | Installation of Motorcycle Lighting and WP.29 Regulatory Project | Review of Regulations for Applicability to ADS Vehicles |
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| UN R86: Baseline document for simplification amendments |
| Reference Number: SLR-74-11 |
| Submitted by: CEMA |
| Meeting Sessions: 74th SLR session (10-12 Sep 2025) |
| Document date: 10 Sep 25 |
| Relevant to: UN Regulation No. 86 | Installation of Lighting and Lighting-Signalling Equipment on Tractors and WP.29 Regulatory Project | Simplification of Lighting Regulations |
| Click here to view the full document file |