Non-Governmental Organization
International Automotive Lighting and Light-signalling Expert Group
Submissions to WP.29 bodies: Five hundred and twenty-four documents (latest document: 7 February 2022)

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.

2022 February 7
UN R48: Proposal for a Supplement to the 06, 07 and 08 series of amendments | GRE/2022/2
2022-02-07 2022-03-04 11:43:24 UTC
2021 December 20
Question concerning boundaries of geometric visibility for lighting | SLR-52-11
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
2021-12-14 2022-01-11 13:48:57 UTC
2021 October 29
How to reduce power consumption in existing lighting functions without reducing safety | GRE-85-37
2021-10-29 2022-03-04 15:51:40 UTC
2021 October 29
Signalling Road Projection | GRE-85-38
2021-10-29 2022-03-04 15:53:11 UTC
2021 October 28
UN R48: Proposed amendments to new supplement to the 06, 07 and 08 series of amendments | GRE-85-33
2021-10-28 2022-03-04 15:39:35 UTC
2021 October 19
UN R48: Proposal for new supplement to 06, 07 and series 08 series of amendments | GRE-85-20
2021-10-19 2022-03-04 13:24:20 UTC
2021 September 30
Technical requirements concerning manoeuvring lamps | SLR-51-08
2021-09-30 2021-10-01 15:50:15 UTC
2021 August 12
RE 5: Proposal for amendment | GRE/2021/24
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
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
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
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
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
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
2021-07-14 2021-07-14 15:57:21 UTC
2021 June 14
Editorial errors with regard to lighting scientific notations | SLR-48-08
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
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
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
2021-05-14 2021-03-27 10:17:01 UTC
2021 May 5
UN R148: Detachable outer lens marking provision | SLR-47-03
2021-05-05 2021-05-05 17:25:55 UTC
2021 May 5
UN R148: Comments on failure conditions | SLR-47-04
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
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
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
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
2021-04-26 2021-04-26 09:33:27 UTC