International Automotive Lighting and Light-signalling Expert Group
4 Jun 2016 Application of the DETA Universal Identifier under the proposed simplification of lighting regulations (GTB) DETA-25-09 2016-06-04 GTB
24 Mar 2014 Simplification of UN Lighting and Light-Signalling Regulations: GTB opinion (GTB) GRE-71-17 2014-03-24 GTB white paper on priorities and objectives for the simplification of lighting regulations, especially regarding reduction of the current burdens associated with the necessity of collective amendments in the development of these regulations and the longer-term difficulties to be overcome in restructuring these regulations and their legal framework. GTB
28 Mar 2014 Simplification of Lighting and Light-signalling Regulations: Thoughts on a “new approach” (GTB) GRE-71-24 2014-03-28 GTB discussion paper to focus attention on defining the problem(s) to be resolved through a the simplification of UN lighting regulations. GTB
2 Nov 2016 Simplification of Lighting and Light-Signalling Regulations: application of the Unique Identifier (UI) (GTB) GRE-76-24/Rev.1 2016-11-02 GTB
11 Sep 2014 Draft agenda for the first SLR informal group session (GTB) SLR-01-01/Rev.1 2014-09-11 GTB
5 Sep 2014 GTB thoughts on the editorial process for the simplification of lighting regulations (GTB) SLR-01-04 2014-09-05 GTB
11 Sep 2014 Analysis of proposals for amendments to lighting regulations adopted by GRE from GRE-61 to GRE70 (GTB) SLR-01-07 2014-09-11 GTB analysis of "collective amendments" to lighting regulations received by the Working Party on Lighting and Light-signalling Equipment (GRE) where a single change impacts multiple lighting regulations resulting in the proliferation of amendment proposals. GTB
11 Sep 2015 Review of filament lamp use restrictions (GTB) SLR-05-01 2015-09-11 GTB
7 Dec 2015 Incorporation of groupings of existing UN Regulations into a small number of new regulations (GTB) SLR-07-06 2015-12-07 Regulation mock-up to show how a set of related UN lighting regulations currently in use could be consolidated within a single regulation as part of the overall simplification of lighting regulations. GTB
7 Dec 2015 Structure for a new regulation to group a number of existing lighting regulations (GTB) SLR-07-07 2015-12-07 Discussion paper on the possibility to group lighting regulations under one of three new regulations as follows:<ol><li>Light Signaling Devices incorporating Regulations 4, 6, 7, 23, 38, 50, 77, 87, and 91</li><li>Forward Lighting Devices incorporating Regulations 19, 98, 112, 123, and 119</li><li>Retro-Reflective Devices incorporating Regulations 3, 27, 69, 70, and 104</li></ol>. GTB
24 Dec 2015 Possible options for the simplification of lighting regulations (GTB) SLR-07-10 2015-12-24 Review of the options considered for the simplification of lighting regulations that culminated in the decision to consolidate the device regulations under three new regulations covering Front Lighting, Light Signalling, and Retro-reflective Devices. GTB
7 Jan 2016 Structure of the new lighting device regulations pursuant to the 7th SLR informal group session (GTB) SLR-08-02 2016-01-07 Updated paper on the grouping of lighting regulations under one of three new regulations as follows: Light Signaling Devices incorporating Regulations 4, 6, 7, 23, 38, 50, 77, 87, and 91 Forward Lighting Devices incorporating Regulations 19, 98, 112, [ 113 ], 119, and 123 Retro-Reflective Devices incorporating Regulations 3, 27, 69, 70, and 104 GTB
20 Feb 2016 Skeletons of the new regulations under the simplified lighting regime (GTB) SLR-09-03 2016-02-20 Compressed file package with three documents outlining the structure for the new simplified lighting regime and for the new regulations on light signaling and road illuminating devices. GTB
22 Jan 2017 Lighting regulations and the DETA Unique Identifier (GTB) SLR-14-02 2017-01-22 GTB understanding of the application of the Unique Identifier (UI) and the UN secure Internet database in accordance with Schedule 5 of the 1958 Agreement. GTB
22 Jan 2017 Info for GTB on DETA and Unique Identifier (GTB and RDW) SLR-14-03 2017-01-22 Email from the DETA secretary providing an update on the status of the DETA project and its eventual application to lighting products under the Simplification of Lighting Regulations. GTB RDW
22 Jan 2017 Simplification of the UN lighting and Regulations Stage 2 (Performance-based, Technology neutral) (GTB) SLR-14-04 2017-01-22 Presentation addressing the "opportunity of a lifetime", including<ul><li>Chinese plans for simplification of GB Standards,</li><li>Synchronisation of the UN and Chinese Regulations and Standards,</li><li>Longer-term vision for global harmonisation, and</li><li>Removal of barriers to innovation and the administrative burden.</li></ul> GTB
22 Jan 2017 Issues on UN Regulations on light sources in Annex 4 of UN Regulation No. 0 (IWVTA) (GTB) SLR-14-05 2017-01-22 The regulation of lighting includes individual regulations for specific lighting devices (headlamps, direction indicators, etc.), for light source (filament, gas, LED), and for installation (UN R48). The proposed UN R0 on the type approval of whole vehicles requires submission of approval certificates for components and systems to be included within the whole vehicle approval. Vehicle manufacturers work directly with UN R48 approvals, but lamp and device approvals are generally handled by lighting suppliers. UN R48 includes provisions for listing approvals of lighting units, but not for approvals of light sources (presently UN R37, R99, and R128). In order to avoid excessive administrative burdens, GTB proposes that the regulations covering light units include provisions to confirm their approval under the applicable light source regulations such that UN R48 approvals would represent approval of the vehicle lighting systems under both device regulations and light-source regulations. GTB
25 Jan 2017 Application of the DETA Unique Identifier to Lighting Regulations: Update of GRE-76-24/Rev1 (GTB) SLR-15-01 2017-01-25 GTB
18 Mar 2017 Cross-references and explanations for the draft Light-Signalling Devices (LSD) Regulation (CLEPA, Netherlands, and GTB) SLR-16-03 2017-03-18 CLEPA Netherlands GTB
18 Mar 2017 Light-Signalling Devices Regulation: Status of source regulations (Netherlands, GTB, and CLEPA) SLR-16-04 2017-03-18 Table of regulations and pending proposals that would in whole or in part be consolidated into the new UN Regulation on light-signalling devices. Netherlands GTB CLEPA
16 May 2017 Ideas for stages 2 and 3 in the simplification of UN lighting regulatons (GTB) SLR-17-06 2017-05-16 Presentation of opportunities, including potential to develop harmonized global technical regulation(s), in the simplification of lighting regulations. GTB
25 Sep 2017 Proposal for the Stage 2 plan for the Simplification of Lighting Regulations (GTB) SLR-20-07 2017-09-25 GTB
25 Sep 2017 Draft text of the proposal for updating UN R53 with references to the new lighting device regulations (CLEPA and GTB) SLR-20-09 2017-09-25 CLEPA GTB
25 Sep 2017 Draft text of the proposal for updating UN R74 with references to the new lighting device regulations (CLEPA and GTB) SLR-20-10 2017-09-25 CLEPA GTB
25 Sep 2017 Draft text of the proposal for updating UN R86 with references to the new lighting device regulations (CLEPA and GTB) SLR-20-11 2017-09-25 CLEPA GTB
25 Sep 2017 Draft text of the proposal for updating UN R48.04 with references to the new lighting device regulations (GTB) SLR-20-12 2017-09-25 GTB
25 Sep 2017 Draft text of the proposal for updating UN R48.05 with references to the new lighting device regulations (GTB) SLR-20-13 2017-09-25 GTB
25 Sep 2017 New definitions under UN Regulation No. 48 (04, 05, and 06 series) (GTB) SLR-20-14 2017-09-25 Draft proposal for definitions of "assembly", "function", and "headlamp" for application across the new UN lighting device regulations. GTB
27 Nov 2017 Notes from the DETA and SLR meeting on 18 October 2017 (GTB) SLR-21-04 2017-11-27 Notes from the 18 October discussion on approval markings and the DETA Unique Identifier database number between the DETA informal group and the SLR informal group. GTB
5 Dec 2017 Presentation for WP.29 on the Unique Identifier and lighting regulations (GTB) SLR-21-07 2017-12-05 GTB
21 Dec 2017 Conventional type approval markings and application of the Unique Identifier (GTB) SLR-21-08/Rev.1 2017-12-21 Preparation of a detailed proposal concerning Conventional Type Approval Markings and the Application of the Unique Identifier (UI) for decision at the SLR 21st Session. GTB
25 Jan 2018 SLR: GTB input for the second-stage simplification of light regulations (GTB) SLR-22-01 2018-01-25 GTB
28 Jan 2018 Progress of new GB standards for light sources (GTB) SLR-22-04 2018-01-28 GTB
31 Jan 2018 Progress report on integration of GB standards for retro-reflecting devices (GTB) SLR-22-07 2018-01-31 GTB
1 Jun 2018 SLR Stage II: GTB Approach to Glare and Visibility Issues (GTB) SLR-24-06 2018-06-01 GTB
1 Jun 2018 SLR Stage 1: The complete package (GTB) SLR-24-12 2018-06-01 GTB
27 Jun 2018 LSD: GTB input for stage 2 development of the light-signalling devices regulation (GTB) SLR-25-02 2018-06-27 GTB
30 Jun 2018 RID: GTB input for the phase 2 development of the Road Illumination Devices regulation (GTB) SLR-25-03 2018-06-30 GTB
12 Feb 2019 RID: GTB input for the second-stage simplification of road illumination device requirements (GTB) SLR-26-04/Rev.1 2019-02-12 GTB
19 Sep 2018 RRD: GTB input for the second-stage simplification of retro-reflecting device requirements (GTB) SLR-26-05 2018-09-19 GTB
12 Dec 2018 Candidate lighting functions for possible GTR (GTB) SLR-27-02/Rev.1 2018-12-12 List of lighting functions covered by UN Regulations and the US Federal Motor Vehicle Safety Standards (FMVSS) and comments on degree of similarity. GTB
28 Feb 2019 Lighting Regulations Simplification: Stage II (GTB) SLR-28-16 2019-02-28 GTB
20 May 2019 GTB response to the comments from Poland - Proposal for a Way Forward (GTB) SLR-30-07 2019-05-20 Comments in response to document SLR-28-03. GTB
24 Jun 2019 SLR: Input to list of potential candidate functions for GTRs (GTB) SLR-31-02 2019-06-24 GTB
4 Sep 2019 Development and application of performance-based lighting regulations (GTB) SLR-32-18 2019-09-04 GTB
11 Oct 2019 Unique Identifier draft presentation for GRE-82 (Rev. of SLR-32-03) (GTB) SLR-33-16 2019-10-11 GTB
8 Jul 2020 Lighting regulations: Scientific notation “cookbook” (GTB) SLR-39-04/Rev.1 2020-07-08 GTB
14 Jun 2021 Editorial errors with regard to lighting scientific notations (GTB) SLR-48-08 2021-06-14 GTB
24 Mar 2023 SLR: Investigation-Apparent surface based on luminance criteria (GTB) SLR-61-09 2023-03-24 GTB
12 Dec 2023 SLR: Basic idea for division of focus between UN “installation” and “device” Regulations (GTB) SLR-65-07 2023-12-12 GTB
9 Feb 2024 UN R48: Baseline document for SLR Stage 2-Step 2 (GTB) SLR-65-10/Rev.1 2024-02-09 GTB
9 Feb 2024 Scientific notations in UN R48 (GTB) SLR-66-01 2024-02-09 GTB
9 Apr 2024 UN R48: Baseline document for Stage 2 / Step 2 SLR (GTB) SLR-67-04/Rev.1 2024-04-09 GTB
13 Sep 2024 UN R48: Proposals for new summary tables on lamp positioning and geometric visibility angles (GTB) SLR-68-13/Rev.3 2024-09-13 GTB
13 Sep 2024 UN R48: Baseline document for SLR Stage 2-Step 2 (GTB) SLR-69-05/Rev.1 2024-09-13 GTB
6 Sep 2024 UN R48: Proposal for simplification of paragraphs 6.X.4. and 6.X.5. (GTB) SLR-69-11 2024-09-06 GTB
7 Feb 2025 UN R48: Baseline document for Simplification Stage 2-Step 2 (GTB) SLR-71-07/Rev.1 2025-02-07 GTB
2 Jul 2025 Input on SLR "apparent surface" discussions (GTB) SLR-73-06 2025-07-02 GTB
11 Jul 2025 UN R48: Baseline document for Stage 2 SLR (GTB) SLR-73-07/Rev.1 2025-07-11 GTB
16 Sep 2025 UN R48: Input on "apparent surface" discussions (GTB) SLR-74-05/Rev.1 2025-09-16 GTB
28 Nov 2025 Input for "apparent surface" lighting discussions (GTB) SLR-75-04 2025-11-28 GTB
12 Dec 2025 Input on "technology neutrality" in lighting regulations (GTB) SLR-75-06/Rev.1 2025-12-12 GTB
6 Feb UN R48: Comparison of lighting functions (para. 6) (GTB) SLR-76-14 2026-02-06 GTB
4 Jun UN R48: Definition of "apparent surface" and single lamp distances (GTB) SLR-78-05 2026-06-04 The document addresses simplification of the definition of "apparent surface" and single lamp distance requirements in UN R48. It presents a new CAD-based concept defining apparent surface using light emitting surface with clear outer lens disregarded. The document notes that current regulation allows multiple ways to define apparent surface resulting in different distances, with existing approvals having distances significantly larger than 75mm between distinct parts without known safety issues. GTB agrees on simplifying the apparent surface definition to describe function contours as seen by road users, while acknowledging this should not restrict possible designs. The document references a 1999 INF Milano study concluding symmetric appearance is relevant for vehicle identification and larger distances are acceptable for symmetric compared to asymmetric constellations. GTB