Since 1952 the GTB has been recognised as the global group of vehicle manufacturers, system suppliers, light source manufacturers, testing laboratories and academia working to assure regulation and safety of automotive lighting systems and their installation.
GTB membership includes 17 delegations from countries, including Europe, USA and Japan. Representation in national delegations comes from industry, approval testing laboratories, regulatory agencies and academia.
The GTB’s principal activity today is the preparation of proposals for new and amended UNECE Regulations, taking into account technical development, actual testing experience and the safety and economic implications with a view to practical application.
In 2012, the GTB changed its name from the Working Group Brussels 1952 (aka Groupe de Travail Bruxelles 1952, hence the acronym GTB) to the International Automotive Lighting and Light-signalling Expert Group.
You can find more information about GTB at their website.
| 2021 January 24 |
UN R149: New photometric tables | SLR-45-01
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2021-01-24 | 2021-01-24 18:14:36 UTC |
| 2021 January 24 |
UN R149: Requirements tables | SLR-45-02
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2021-01-24 | 2021-01-24 18:15:54 UTC |
| 2021 January 7 |
Proposal for R48, R148, R149: Visibility of red light and white light | SLR-44-07
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2021-01-07 | 2021-01-07 21:34:58 UTC |
| 2020 December 13 |
UN R148: Application of scientific notations | SLR-43-05/Rev.1
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2020-12-13 | 2020-12-03 19:28:00 UTC |
| 2020 December 13 |
UN R149: Application of scientific notations | SLR-43-06/Rev.1
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2020-12-13 | 2020-12-03 19:29:04 UTC |
| 2020 December 13 |
UN R150: Application of scientific notations | SLR-43-07/Rev.1
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2020-12-13 | 2020-12-03 19:29:59 UTC |
| 2020 December 7 |
UN R148: Proposals for the 01 series of amendments | SLR-43-09
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2020-12-07 | 2020-12-07 12:53:28 UTC |
| 2020 December 7 |
Parking signal performed by position lamps | SLR-43-08
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2020-12-07 | 2020-12-07 12:57:27 UTC |
| 2020 November 9 |
UN R149: Proposal for simplification of photometric stability testing | SLR-42-05/Rev.1
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2020-11-09 | 2020-11-01 12:21:38 UTC |
| 2020 October 31 |
Necessity of the oblique stroke (“/”) in the approval marking of headlamps | SLR-42-04
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2020-10-31 | 2020-11-01 12:20:17 UTC |
| 2020 October 11 |
Modifications to document GRE/2020/4 (UN R48 and R149) | GRE-83-30
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2020-10-11 | 2020-10-11 08:37:27 UTC |
| 2020 September 28 |
UN R48: Draft text update with new RID beam in R149-01 | SLR-41-04/Rev.1
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2020-09-28 | 2020-09-21 08:48:39 UTC |
| 2020 August 29 |
Matched pair in UN Regulation No. 149 - Stage 2 lighting simplification | SLR-40-01/Rev.1
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2020-08-29 | 2020-08-24 17:38:57 UTC |
| 2020 August 29 |
Draft presentation on scientific notation under lighting regulations | SLR-40-05/Rev.1
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2020-08-29 | 2020-08-24 18:33:36 UTC |
| 2020 August 29 |
UN R149: Annex 13- Marking size and examples | SLR-40-10/Rev.2
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2020-08-29 | 2020-08-26 09:21:25 UTC |
| 2020 August 24 |
UN R48: Introduction of new RID beam per UN R149-01 | SLR-40-04
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2020-08-24 | 2020-08-24 18:30:22 UTC |
| 2020 August 6 |
UN R65: Proposal for Supplement 11 | GRE/2020/18
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2020-08-06 | 2020-08-06 10:29:18 UTC |
| 2020 August 5 |
RE5: Proposal for amendment to the Consolidated Resolution on the common specification of light source categories | GRE/2020/22
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2020-08-05 | 2020-10-05 13:56:08 UTC |
| 2020 July 13 |
UN R48: Draft update with new RID beam in R149-01 | SLR-39-03/Rev.1
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2020-07-13 | 2020-06-26 17:16:48 UTC |
| 2020 July 8 |
Lighting regulations: Scientific notation “cookbook” | SLR-39-04/Rev.1
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2020-07-08 | 2020-06-30 15:04:46 UTC |
| 2020 July 8 |
UN R149: Marking size issue in Annex 13 | SLR-39-22
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2020-07-08 | 2020-07-08 18:23:49 UTC |
| 2020 July 7 |
UN R149: GTB proposal concerning “Matched pair” | SLR-39-11/Rev.1
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2020-07-07 | 2020-07-01 15:31:32 UTC |
| 2020 June 30 |
Lighting regulations: General remarks on scientific notation | SLR-38-12/Rev.2
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2020-06-30 | 2020-05-22 16:44:03 UTC |
| 2020 June 30 |
UN R148: Scientific notation changes | SLR-38-13/Rev.1
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2020-06-30 | 2020-05-22 16:45:22 UTC |
| 2020 June 30 |
UN R149: Scientific notation changes | SLR-38-14/Rev.2
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2020-06-30 | 2020-05-22 16:46:13 UTC |
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