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.
2023 November 10 |
UN R48: Discussion on dimensions (height, width, length, distance) and para. 6.x.4. | SLR-64-07
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2023-11-10 | 2023-11-05 09:15:41 UTC |
2023 November 10 |
UN R48: New approach to apparent surface | SLR-64-09
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2023-11-10 | 2023-11-13 15:51:07 UTC |
2023 September 13 |
UN R150: Proposal for a Supplement to the 01 series of amendments | GRE/2023/21
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2023-09-13 | 2023-09-21 13:07:23 UTC |
2023 September 13 |
UN R45: Proposal for Supplement [13] to the 01 series of amendments | GRE/2023/22
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2023-09-13 | 2023-09-21 13:15:01 UTC |
2023 September 13 |
UN R149: Proposal for Supplement to the 01 series of amendments | GRE/2023/23
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2023-09-13 | 2023-09-21 13:18:35 UTC |
2023 September 13 |
UN R37: Proposal for Supplement [49] to the 03 series of amendments | GRE/2023/24
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2023-09-13 | 2023-09-21 13:22:04 UTC |
2023 September 5 |
UN R128: Proposal for Supplement [12] to the original version | GRE/2023/25
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2023-09-05 | 2023-09-21 13:27:18 UTC |
2023 September 1 |
UN R48: Collation of proposals for [09] series of amendments | SLR-63-05/Rev.1
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2023-09-01 | 2023-09-01 14:11:23 UTC |
2023 September 1 |
UN R48: Proposal for a Supplement to the 08 [and 09] series of amendments (also 01 series of UN R148) | GRE/2023/20
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2023-09-01 | 2023-09-21 13:02:17 UTC |
2023 August 30 |
UN R48: Addition of Annexes with summary tables | SLR-63-07
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2023-08-30 | 2023-08-30 09:13:20 UTC |
2023 August 7 |
UN R149: Proposal for a Supplement to the 01 series of amendments | GRE/2023/18
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2023-08-07 | 2023-09-13 14:56:19 UTC |
2023 August 7 |
UN R48: Proposal for a Supplement to the 06, 07, 08 [and 09] series of amendments | GRE/2023/19
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2023-08-07 | 2023-09-14 15:28:03 UTC |
2023 July 10 |
UN R48: Discussion of apparent surface and angles of geometric visibility | SLR-62-14
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2023-07-10 | 2023-09-01 14:28:10 UTC |
2023 June 26 |
UN R149: Correction to 01 series of amendments (photometric stability test point) | SLR-62-01/Rev.1
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2023-06-26 | 2023-06-20 10:48:16 UTC |
2023 April 28 |
UN R48 and R149: Proposal to supersede document GRE/2023/8 | GRE-88-25/Rev.1
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2023-04-28 | 2023-06-20 15:07:35 UTC |
2023 April 18 |
UN R149: 01 series-Improved failure provisions, including "high definition" headlamps | GRE-88-10
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2023-04-18 | 2023-04-24 14:37:25 UTC |
2023 April 18 |
“Signal Road Projector” (SRP): Main aspects of the proposal | GRE-88-11
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2023-04-18 | 2023-04-24 14:42:19 UTC |
2023 March 24 |
UN R148: Comments on apparent surface issue | SLR-61-08
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2023-03-24 | 2023-05-24 14:00:52 UTC |
2023 March 24 |
SLR: Investigation-Apparent surface based on luminance criteria | SLR-61-09
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2023-03-24 | 2023-05-24 14:48:34 UTC |
2023 February 7 |
Proposal for a Supplement to the 06, 07 and 08 series of UN R48 and the 01 series of UN R149 | GRE/2023/8
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2023-02-07 | 2023-02-22 16:44:29 UTC |
2023 February 6 |
UN R48: Proposal for a Supplement to the 06, 07 and 08 series of amendments | GRE/2023/7
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2023-02-06 | 2023-02-22 16:41:00 UTC |
2023 January 19 |
Headlamp levelling: Formula for vertical inclination limits of the cut-off | SLR-60-07
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2023-01-19 | 2023-01-23 15:03:09 UTC |
2022 October 28 |
UN R48/R149: Revision of document GRE/2022/21 | GRE-87-30
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2022-10-28 | 2022-11-02 15:01:36 UTC |
2022 October 25 |
“Headlamp Safety Performance Rating” (HSPR): GTB Recommended Practice | GRE-87-19
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2022-10-25 | 2022-10-27 05:28:23 UTC |
2022 October 13 |
“Driver Assistance Projections” (DAP): Live demonstrations during GRE-87 | GRE-87-06
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2022-10-13 | 2022-10-20 17:17:15 UTC |
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