7. GRE noted the progress of the Informal Working Group “Simplification of the Lighting and Light-Signalling Regulations” (IWG SLR) and issues for consideration under step 2 of stage 2 of the simplification process (GRE-88-07), in particular:

• Simplifying and improving the definition of an apparent surface.
• Objective assessment of the actual functions as installed on the vehicle.
• Where possible, harmonizing requirements with other regions.
• Consistency among similar requirements and definitions in installation regulations.

8. The experts of IWG SLR presented an updated proposal for a new 09 series of amendments to UN Regulation No. 48 that introduced revised requirements for headlamp levelling (ECE/TRANS/WP.29/GRE/2020/8/Rev.3). GRE adopted the technical provisions of the proposal. In view of other proposals on the agenda that could become part of the new 09 series of amendments to UN Regulation No. 48, GRE agreed to address the transitional provisions for the new series under agenda item 6 (a).

9. The experts of IWG SLR introduced proposals for amendments to UN Regulations Nos. 48, 53, 74 and 86 that enabled a phasing out of the installation of older lamps/devices (respectively, ECE/TRANS/WP.29/GRE/2023/3, ECE/TRANS/WP.29/GRE/2023/4, ECE/TRANS/WP.29/GRE/2023/5 and ECE/TRANS/WP.29/GRE/2023/6).

10. Subject to removal of the square brackets and keeping the text inside, GRE adopted ECE/TRANS/WP.29/GRE/2023/4, ECE/TRANS/WP.29/GRE/2023/5 and ECE/TRANS/WP.29/GRE/2023/6 and requested the secretariat to submit them for consideration and vote at the November 2023 sessions of WP.29 and the Administrative Committee (AC.1) as a new 04 series of amendments to UN Regulation No. 53, a new 03 series of amendments to UN Regulation No. 74 and a new 03 series of amendments to UN Regulation No. 86.

11. GRE adopted GRE-88-27 as a replacement of ECE/TRANS/WP.29/GRE/2023/3 and decided to include it in a new 09 series of amendments to UN Regulation No. 48 (see paragraph 21 below).

12. GRE noted a request of the Informal Working Group for Electronic Database for the Exchange of Type Approval documentation (IWG DETA) to provide clarity on the UN Regulations for which the Unique Identifier (UI) markings may be applied (GRE-88-02-Rev.1 and GRE-88-03-Rev.1). The expert from the International Motor Vehicle Inspection Committee (CITA) recalled its previous position on the need for additional markings in case of UI, to ensure the availability of sufficient information on the device for periodic and roadside inspections (ECE/TRANS/WP.29/GRE/2022/13, GRE-87-07). Some experts pointed out that additional markings would run counter the very idea of UI.

13. To review UN Regulations under its purview for the purposes of UI (GRE-88-26), GRE made the following classifications:

1. Obsolete device UN Regulations that had been frozen in the course of two freezing exercises;
2. New simplified device UN Regulations Nos. 148, 149 and 150;
3. Installation UN Regulations Nos. 48, 53, 74 and 86;
4. Light sources UN Regulations Nos. 37, 99 and 128; and
5. Standalone UN Regulations Nos. 10, 45 and 65.

14. GRE agreed that UI could be used for the group (b) above, but definitely not for (a) and probably not for (c) and (d). For the group (e), GRE invited IWG SLR and the Informal Working Group on Electromagnetic Compatibility (IWG EMC) to prepare recommendations. Finally, GRE decided to revert to this topic at the next session, including the issue of additional markings.