By Eric Blusseau, DVN Regulation expert
GRE, the Working Party on Lighting and Light-Signaling, is the subsidiary body of the World Forum for Harmonization of Vehicle Regulations (WP.29) which prepares regulatory proposals on active safety, specifically regarding vehicle lighting. The group of over 80 experts convene officially twice a year, and assigns working groups with specific problems that need to be solved urgently or that require special expertise.
The 92nd GRE session will be held at the Palais des Nations in Geneva next week, from 22 to 25 April. The provisional agenda of the session is published, and the working documents and informal documents for the session are here. The working group for simplification of the lighting and light-signalling regulations (IWG SLR) will present their progress report.
Six official proposals have been tabled to modify the lighting installation regulation (R48):


Three official proposals have been tabled to modify the signalling lamp regulation (R148)—with effects on the vehicle lamp installation regulation R48—for signaling road projections. GTB will propose an update of the proposal from last year, having taken account of remarks by contracting parties (countries applying the regulation), to be able to reach agreement for signaling road projections for turn indicators and reversing lamps. If text is approved, after a final approval in WP.29, this signaling projection may be legal in the many countries applying UN Regulations…just one year after Chinese regulations will allow them from July 2025.
If text is finally approved, DVN will provide a complete explanation of this new regulation including differences between China and UN Regulations.

One proposal has been tabled to modify the road illuminating device regulation (R149)—it is just editorial modifications. Proposals to modify R10 (EMC) and R65 (emergency vehicle special warning lights) are also on the docket, so far without any proposed text.
Also on the docket: the status of the task forces on glare (TF GP) and autonomous vehicle signaling requirements (TF AVSR). Informal documents will be presented by the task forces based on the latest status of the discussion (document AVSR-21-02_Rev.4 and AVSR-21-03_Rev.1).
We will share a synthesis next week, a summary of the important informal documents that will be also on the agenda.