From 15 to 19 November, GTB held its 131st plenary session in Berlin, Germany, with meetings of its General Assembly; Technical Steering Committee; Committee of Experts, and its Working Groups. It was a hybrid event to sidestep pandemic-related travel difficulties. 30 people attended in person from 10 delegations, and 50 people joined in via WebEx from the remaining GTB delegations.
Major topics and outcomes of the session
• Consolidated and updated versions of Regulation 48 (06 and 07 series) produced by the GTB Secretariat;
• Updated consolidations of all lighting UN Regulations will be produced and made available on the GTB website for all GTB members;
• GTB has adopted proposals to amend R48 to remove the minimum distance between the pair of front and rear position lamps; R65 to permit Category HT and X special warning lamps emitting light of different colours in the same way as category T, and R.E.5 for editorial corrections for usage of the term “lamp” and “light source”;
• Considered specific items and general topics that should be dealt with in Stage II / Step 2 of the simplification, focussed on installation matters, which will form the basis for GTB’s input to the GRE-SLR sessions in 2022;
• Adopted a new meeting plan for 2022, subject to change according to the pandemic situation: a live/online hybrid first mini meeting in February for the working groups; a full in-person plenary session in June with a forum day open to GTB non-members, and an in-person second mini meeting in November for the working groups.
Main subjects and results of the Working Group meetings
WG Front Lighting devoted most of its time to discussing how to improve the proposal for driver assistance projections (recently adopted by GRE) on the basis of the comments made by the CPs (contracting parties). Debate centred round how to reintroduce the possibility for transforming the projections—a function not accepted by GRE—without causing disturbance or distraction for other road users. Special sessions on driver assistance projections with interested GRE CPs may be organised in early 2022 to draft a proposal.
WG Installation discussed many items, including:
• Improvements to the definition of lamps in the shape of band or strip, to provide a simpler and technologically neutral definition. A task force on this subject has been established, to merge the different proposals presented for the next meeting;
• Flashing side marker lamps, to clarify the present requirements, also allowing for more flexibility. An agreement on the technical aspects was reached, on which a new proposal will be prepared for the next meeting;
• Ideas on reduction of power consumption: research studies on suitable solutions will be launched in the near future under the supervision of WG SVP and WG S;
• GTB Input to SLR Stage 2, Step 2 : will be maintained in the agenda for all 2022 meetings. The need for an improvement of the “apparent surface” definition, as prerequisite to the simplification discussion, and the intention to take this opportunity to also harmonise the requirements worldwide.
WG Safety and Visual Performance reviewed the user’s guide for the Headlamp Safety Performance Rating (HSPR) and the associated software developed by the TU Darmstadt. This work was mainly based on the CIE TC 4-45 standard CIE S021/E:2011 “Vehicle Headlighting Systems Photometric Performance – Method of Assessment”, updated by adding the evaluation method for ADB systems and a more suitable calculation method. The final version of the software will be made available to GTB by the end of January 2022 for review and comments. After GTB approval, the HSPR will be distributed outside GTB to promote this new comprehensive rating system.
WG Signal Lighting was mainly focussed on the definition of the necessary studies to support the introduction of the signalling projections. At the last GRE session, a presentation to introduce the subject was made (doc. GRE-85-38) and comments were received by CPs. It will be important to clarify that such projections are not intended to tell other road users how to behave but to increase the awareness of the existing signalisation to increase safety, especially for vulnerable road users.
TF Lighting and Visibility for Sensors reviewed the environmental and human-related external influences affecting sensors, causing a potential loss of their performance. The objective is to determine how sensors are affected by external influences, what is happening to their performance and define a way to guarantee a good level of the performance.
Next GTB Sessions (unless COVID new emergency situation will force us to change):
|7-10 February 2022||GTB Intermediate WG session, Torino, Italy (hybrid session)|
|3-17 June 2022||GTB 132nd session – Stockholm, Sweden (in person session)|
|November 2022||GTB Intermediate WG session, The Hague, Netherlands (in person)|
|2023||GTB 133rd session – USA|
|2023 / 2024||GTB 134th session – Austria|
More information can be had on the GTB website.