Non-Governmental Organization
International Automotive Lighting and Light-signalling Expert Group
Submissions to WP.29 bodies: Five hundred and fifty-seven documents (latest document: 10 November 2023)

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
2023-11-10 2023-11-05 09:15:41 UTC
2023 November 10
UN R48: New approach to apparent surface | SLR-64-09
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
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
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
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
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
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
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
2023-09-01 2023-09-21 13:02:17 UTC
2023 August 30
UN R48: Addition of Annexes with summary tables | SLR-63-07
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
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
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
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
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
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
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
2023-04-18 2023-04-24 14:42:19 UTC
2023 March 24
UN R148: Comments on apparent surface issue | SLR-61-08
2023-03-24 2023-05-24 14:00:52 UTC
2023 March 24
SLR: Investigation-Apparent surface based on luminance criteria | SLR-61-09
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
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
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
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
2022-10-28 2022-11-02 15:01:36 UTC
2022 October 25
“Headlamp Safety Performance Rating” (HSPR): GTB Recommended Practice | GRE-87-19
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
2022-10-13 2022-10-20 17:17:15 UTC