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 December 20 |
Question concerning boundaries of geometric visibility for lighting | SLR-52-11
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2021-12-20 | 2022-01-06 18:34:36 UTC |
| 2021 December 14 |
Comments to Regulation Nos. 48/53/74/86/148/149 | SLR-52-05
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2021-12-14 | 2022-01-11 13:48:57 UTC |
| 2021 September 30 |
Technical requirements concerning manoeuvring lamps | SLR-51-08
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2021-09-30 | 2021-10-01 15:50:15 UTC |
| 2021 August 12 |
RE 5: Proposal for amendment | GRE/2021/24
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2021-08-12 | 2021-09-14 10:58:16 UTC |
| 2021 August 6 |
UN R48: Proposal for Supplement to the 06, 07 and 08 series of amendments | GRE/2021/18
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2021-08-06 | 2021-09-14 10:03:00 UTC |
| 2021 July 22 |
UN R148: Tell-tale and rear registration plate illuminating device | SLR-49-01/Rev.1
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2021-07-22 | 2021-07-14 15:55:38 UTC |
| 2021 July 21 |
UN R149: Comparison of photometric stability text | SLR-49-15/Rev.1
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2021-07-21 | 2021-07-30 09:34:55 UTC |
| 2021 July 21 |
Revised marking examples for UN R148 and UN R150 | SLR-49-17
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2021-07-21 | 2021-07-30 09:48:17 UTC |
| 2021 July 15 |
Question on test points of the photometric stability for LED H/L and AFS | SLR-49-08
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2021-07-15 | 2021-07-18 17:52:09 UTC |
| 2021 July 14 |
UN R148: 01 series rear registration plate illumination devices | SLR-49-02
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2021-07-14 | 2021-07-14 15:57:21 UTC |
| 2021 June 14 |
Editorial errors with regard to lighting scientific notations | SLR-48-08
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2021-06-14 | 2021-06-14 15:14:03 UTC |
| 2021 June 14 |
Question on additional visibility test for red light towards front and/or white light towards rear of vehicle | SLR-48-09
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2021-06-14 | 2021-06-14 15:16:35 UTC |
| 2021 June 11 |
UN R149: Proposal for the 01 series of amendments | SLR-48-04
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2021-06-11 | 2021-06-11 10:46:24 UTC |
| 2021 May 14 |
UN R48: Proposal for provisions on additional contributors to the driving beam | SLR-46-25/Rev.1
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2021-05-14 | 2021-03-27 10:17:01 UTC |
| 2021 May 5 |
UN R148: Detachable outer lens marking provision | SLR-47-03
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2021-05-05 | 2021-05-05 17:25:55 UTC |
| 2021 May 5 |
UN R148: Comments on failure conditions | SLR-47-04
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2021-05-05 | 2021-05-05 17:34:40 UTC |
| 2021 April 26 |
UN R48: Revised proposal to GRE/2020/4 Rev 1 | GRE-84-24
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2021-04-26 | 2021-04-26 09:06:49 UTC |
| 2021 April 26 |
Article on road projections as a new and intuitively understandable human-machine interface | GRE-84-25
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2021-04-26 | 2021-04-26 09:09:29 UTC |
| 2021 April 26 |
Article on Investigation on Headlights with High-resolution Projection Modules | GRE-84-26
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2021-04-26 | 2021-04-26 09:11:44 UTC |
| 2021 April 26 |
Article on real driving benefits and research findings with digital light functions | GRE-84-27
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2021-04-26 | 2021-04-26 09:33:27 UTC |
| 2021 March 22 |
UN R148: 01 series of amendments rear marking plate lamps | SLR-46-10
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2021-03-22 | 2021-03-19 17:21:40 UTC |
| 2021 February 21 |
Proposal for R48, R148, R149: Visibility of red light and white light | SLR-44-07/Rev.1
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2021-02-21 | 2021-01-07 21:34:58 UTC |
| 2021 February 21 |
UN R149: New photometric tables | SLR-45-01/Rev.1
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2021-02-21 | 2021-01-24 18:14:36 UTC |
| 2021 February 20 |
Clarification of markings under the 01 series of UN R148 and UNR150 | SLR-45-06/Rev.1
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2021-02-20 | 2021-02-13 11:03:17 UTC |
| 2021 February 13 |
UN R148: 01 series change index table discussion | SLR-45-07
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2021-02-13 | 2021-02-13 11:05:31 UTC |
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