33. The Chairman of GRE reported on the results of the seventy-seventh session of GRE (for details, see the report in ECE/TRANS/WP.29/GRE/77).

34. The GRE chair informed WP.29 that, at the request of IWG on IWVTA, GRE had clarified the individual Regulations on lighting and light-signalling devices with a requirement that light sources in these devices should be type approved pursuant to Regulations Nos. 37, 99 or 128.

35. The GRE chair reported that GRE had finalized the discussion on whether or not the amendment proposals to Regulations Nos. 6 and 50 on direction indicators with sequential activation would require a new series of amendments and/or transitional provisions. GRE had concluded that a new series of amendments was not necessary, as the proposed amendments were of clarification nature and did not introduce new requirements. At the same time, GRE had agreed that the industry would need a transition period to take into account, in the design process, the amended provisions and decided to introduce them by means of a Supplement with transitional provisions.

36. The GRE chair also briefed WP.29 that, in the framework of the simplification of the lighting and light-signalling Regulations, GRE had taken took note of a first draft Regulation on Light-Signalling Devices and sought clarification on how the amendment process, including new series of amendments and approval markings, would work for this new Regulation covering many different devices. WP.29 noted that GRE had argued in favour of mandatory, rather than optional, use of Unique Identifier (UI). The representative of OICA informed that the DETA and IWVTA informal groups are currently developing proposed guidelines for the application of the Unique Identifier. He also referred to Schedule 5 of the revised 1958 Agreement, and explained that, while the Unique Identifier could equally apply to a Regulation that encompasses several devices, a new UI could nevertheless be needed when the requirements for only one of the devices is amended. He therefore concluded that the UI concept, though clearly a preferred approach for the simplification of markings, is not a pre-requisite for the work undertaken in GRE, as also confirmed in the IWVTA informal group.