Non-Governmental Organization
International Automotive Lighting and Light-signalling Expert Group
Submissions to WP.29 bodies: Five hundred documents (latest document: 26 March 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 March 27
UN R48: Proposal for provisions on additional contributors to the driving beam | SLR-46-25
2021-03-27 2021-03-27 10:17:01 UTC
2021 March 22
UN R148: 01 series of amendments rear marking plate lamps | SLR-46-10
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
2021-02-21 2021-01-07 21:34:58 UTC
2021 February 21
UN R149: New photometric tables | SLR-45-01/Rev.1
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
2021-02-20 2021-02-13 11:03:17 UTC
2021 February 13
UN R148: 01 series change index table discussion | SLR-45-07
2021-02-13 2021-02-13 11:05:31 UTC
2021 February 12
Proposal for Supplements to UN R149 and to the 06 and 07 series of amendments to UN R48 | GRE/2020/4/Rev.1
2021-02-12 2021-02-12 12:41:04 UTC
2021 February 12
UN R48: Proposal for Supplement [16] to the 06 series and Supplement [02] to the 07 series of amendments | GRE/2021/5
2021-02-12 2021-02-12 14:12:03 UTC
2021 February 12
UN R149: Proposal for Supplement [4] | GRE/2021/6
2021-02-12 2021-02-12 14:55:45 UTC
2021 January 24
UN R149: Requirements tables | SLR-45-02
2021-01-24 2021-01-24 18:15:54 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