Non-Governmental Organization
International Automotive Lighting and Light-signalling Expert Group
Submissions to WP.29 bodies: Four hundred and ninety-three documents (latest document: 22 January 2021)

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
2021-01-24 2021-01-24 18:14:36 UTC
2021 January 24
UN R149: Requirements tables | SLR-45-02
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
2021-01-07 2021-01-07 21:34:58 UTC
2020 December 13
UN R148: Application of scientific notations | SLR-43-05/Rev.1
2020-12-13 2020-12-03 19:28:00 UTC
2020 December 13
UN R149: Application of scientific notations | SLR-43-06/Rev.1
2020-12-13 2020-12-03 19:29:04 UTC
2020 December 13
UN R150: Application of scientific notations | SLR-43-07/Rev.1
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
2020-12-07 2020-12-07 12:53:28 UTC
2020 December 7
Parking signal performed by position lamps | SLR-43-08
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
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
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
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
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
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
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
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
2020-08-24 2020-08-24 18:30:22 UTC
2020 August 6
UN R65: Proposal for Supplement 11 | GRE/2020/18
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
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
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