| SLR: Follow-up to the 73rd IWG session (for information only) |
| No reference number |
| Meeting Sessions: 73rd SLR session (9-11 Jul 2025) |
| Document date: 14 Aug 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, 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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| Simplification of Lighting Regulations: Agenda for the 73rd (July 2025) session |
| Reference Number: SLR-73-01/Rev.1 |
| Meeting Sessions: 73rd SLR session (9-11 Jul 2025) |
| Document date: 11 Jul 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, 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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| LED lifetime requirements |
| Reference Number: SLR-73-02 |
| Submitted by: GTB |
| Meeting Sessions: 73rd SLR session (9-11 Jul 2025) |
| Document date: 19 Jun 25 |
| Relevant to: UN Regulation No. 148 | Light-Signalling Devices (LSD) and UN Regulation No. 149 | Road Illumination Devices (RID) |
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| Light-emitting surface test by luminance camera measurements |
| Reference Number: SLR-73-03 |
| Submitted by: Poland |
| Meeting Sessions: 73rd SLR session (9-11 Jul 2025) |
| Document date: 19 Jun 25 |
| Relevant to: UN Regulation No. 48 | Installation of Lighting and Lighting-Signalling Equipment, UN Regulation No. 148 | Light-Signalling Devices (LSD), and UN Regulation No. 149 | Road Illumination Devices (RID) |
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| Input on SLR "apparent surface" discussions |
| Reference Number: SLR-73-06 |
| Submitted by: GTB |
| Meeting Sessions: 73rd SLR session (9-11 Jul 2025) |
| Document date: 02 Jul 25 |
| Relevant to: UN Regulation No. 48 | Installation of Lighting and Lighting-Signalling Equipment, 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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| Proposal to improve the visibility of direction indicators |
| Reference Number: SLR-73-08/Rev.1 |
|
Proposal to improve the visibility of direction indicators. The proposal modifies UN R48 and UN R148 requirements for direction indicator lamps grouped with stop lamps. Key changes include: requiring 75% of the rear direction indicator’s apparent surface to be more than 25mm from the stop lamp; positioning direction indicators at specified distances from the vehicle’s outer edge; and establishing a minimum apparent surface area of 30cm² for rear direction indicators. The justification cites existing installations showing inadequate visibility and references luminance studies supporting the 30cm² minimum area requirement. |
| Submitted by: Germany |
| Meeting Sessions: 73rd SLR session (9-11 Jul 2025) |
| Document date: 11 Jul 25 |
| Relevant to: UN Regulation No. 48 | Installation of Lighting and Lighting-Signalling Equipment and UN Regulation No. 148 | Light-Signalling Devices (LSD) |
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