Non-Governmental Organization
International Automotive Lighting and Light-signalling Expert Group
Submissions to WP.29 bodies: Four hundred and seventy-six documents (latest document: 29 July 2020)

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.

2020 August 6
UN R65: Proposal for Supplement 11 | GRE/2020/18
2020-08-06 2020-08-06 10:29:18 UTC
2020 July 13
UN R48: Draft update with new RID beam in R149-01 | SLR-39-03/Rev.1
2020-07-13 2020-06-26 17:16:48 UTC
2020 July 8
Lighting regulations: Scientific notation “cookbook” | SLR-39-04/Rev.1
2020-07-08 2020-06-30 15:04:46 UTC
2020 July 8
UN R149: Marking size issue in Annex 13 | SLR-39-22
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
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
2020-06-30 2020-05-22 16:44:03 UTC
2020 June 30
UN R148: Scientific notation changes | SLR-38-13/Rev.1
2020-06-30 2020-05-22 16:45:22 UTC
2020 June 30
UN R149: Scientific notation changes | SLR-38-14/Rev.2
2020-06-30 2020-05-22 16:46:13 UTC
2020 June 30
UN R150: Scientific notation changes | SLR-38-15/Rev.2
2020-06-30 2020-05-22 16:47:10 UTC
2020 June 2
UN R48: Inconsistencies across Supplements 11, 12, and 13 of the 06 series | SLR-38-10/Rev.1
2020-06-02 2020-05-02 12:48:33 UTC
2020 May 27
Lighting: System Approach related to 2 lane (M,N) and 1 lane vehicles: How to proceed? | SLR-38-22
2020-05-27 2020-05-27 09:11:58 UTC
2020 April 24
UN R148: Proposal to clarify the requirements of failure provisions | SLR-38-06
2020-04-24 2020-04-24 14:05:20 UTC
2020 March 10
UN R148: Timing table for light source technology tests | SLR-37-07/Rev.1
2020-03-10 2020-02-27 17:06:37 UTC
2020 February 28
UN R149: Proposal to amend Conformity of Production provisions | SLR-37-08
2020-02-28 2020-02-28 16:28:31 UTC
2020 February 27
UN R148: A. Proposal for an amendment | SLR-37-05/Rev.1
2020-02-27 2020-02-27 17:03:55 UTC
2020 February 27
UN R148: Introduction of D-lamp possibility for Daytime Running Lamps | SLR-37-06
2020-02-27 2020-02-27 17:05:23 UTC
2020 February 14
Headlamps: Scientific notation of the photometric requirements in UN Regulations | SLR-37-02
2020-02-14 2020-02-24 13:08:41 UTC
2020 February 5
Proposal for Supplements to UN R149 and to the 06 series of amendments to UN R48 | GRE/2020/4
2020-02-05 2020-02-25 08:58:44 UTC
2019 December 20
UN R149: Proposed correction | SLR-36-04
2019-12-20 2019-12-20 14:04:34 UTC
2019 December 16
UN R148: Draft amendments to the 00 series | SLR-35-01/Rev.1
2019-12-16 2019-12-05 15:35:20 UTC
2019 December 16
UN R149: Light-source flux amendment | SLR-35-04/Rev.1
2019-12-16 2019-12-05 15:38:26 UTC
2019 December 16
UN R149: New proposal for half sum | SLR-35-07/Rev.1
2019-12-16 2019-12-05 15:43:31 UTC
2019 December 16
UN R149: Road illumination device analysis-paragraph 4 | SLR-35-08/Rev.1
2019-12-16 2019-12-05 15:46:31 UTC
2019 December 16
UN R148: Draft commented revision (based on GRE-82-30) | SLR-35-09/Rev.1
2019-12-16 2019-12-05 15:48:37 UTC
2019 December 16
UN R150: Proposal to correct the examples of approval marks in Annex 24 | SLR-35-10/Rev.1
2019-12-16 2019-12-05 15:50:35 UTC