18. To introduce requirements for LED substitute light sources in the installation UN Regulations, the expert from Germany presented collective amendments to UN Regulations Nos. 48, 53, 74 and 86 (ECE/TRANS/WP.29/GRE/2018/41). The expert from OICA submitted comments (GRE-80-19). GRE adopted the proposals unamended and requested the secretariat to submit them to WP.29 and AC.1 for consideration at their June 2019 sessions as draft Supplement 12 to the 06 series of amendments to UN Regulation No. 48, draft Supplement 4 to the 02 series of amendments to UN Regulation No. 53, draft Supplement 11 to the 01 series of amendments to UN Regulation No. 74 and draft Supplement 2 to the 01 series of amendments of UN Regulation No. 86.

18. To introduce requirements for LED substitute light sources in the installation UN Regulations, the expert from Germany presented collective amendments to UN Regulations Nos. 48, 53, 74 and 86 (ECE/TRANS/WP.29/GRE/2018/41). The expert from OICA submitted comments (GRE-80-19). GRE adopted the proposals unamended and requested the secretariat to submit them to WP.29 and AC.1 for consideration at their June 2019 sessions as draft Supplement 12 to the 06 series of amendments to UN Regulation No. 48, draft Supplement 4 to the 02 series of amendments to UN Regulation No. 53, draft Supplement 11 to the 01 series of amendments to UN Regulation No. 74 and draft Supplement 2 to the 01 series of amendments of UN Regulation No. 86.

17. The expert from GTB presented revised amendments to Regulation No. 128 and to R.E.5 which introduced requirements, test specifications and new categories for light emitting diode (LED) substitute light sources (ECE/TRANS/WP.29/GRE/2017/17, ECE/TRANS/WP.29/GRE/2017/21). The proposals also included collective amendments to Regulations Nos. 48, 53, 74, 86 (ECE/TRANS/WP.29/GRE/2017/22 and GRE-78-02). The experts from Italy and OICA submitted written comments on the proposals (GRE-78-33 and GRE-78-28).

18. GRE noted that, compared to the original GTB proposals that had been considered at the previous session, the revised proposals contained safeguards against the possible misuse of LED substitutes as retrofits in lamps and/or vehicles that were not type approved for using such light sources. A number of experts were of the view that the proposed measures, such as consumer warning on packaging and a website with a list of compatible vehicle models, were not sufficient and reiterated their concerns as raised at the previous session. The expert of OICA pointed out that, to avoid any responsibility for misusing LED substitutes when installing on old vehicle types, the vehicle manufacturers would have be burdened to extend type approvals pursuant to the earlier series of amendments to Regulation No. 48 (GRE-78-28). GRE acknowledged the problem and noted that the failure detection provisions in Regulation No. 48 should be revised. Some experts advocated the idea of physical keying of LED caps to prevent installing unauthorized substitutes.

19. GRE noted that the discussion addressed two different, but interrelated issues: (a) allowing LED substitutes for new type approvals, as part of Original Equipment Manufacturer (OEM) and Original Equipment Supplier (OES), and (b) using LED as retrofits on old vehicle types. Some experts were of the view that the two cannot be separated from one another. To make progress, GRE agreed to establish a task force. The expert from Germany stated that another expert from his country would act as Chair of the task force, while the expert from UK provisionally agreed to become Co-Chair. The expert from IEC volunteered to provide secretarial support.

35. The expert from IMMA presented a consolidated text of the draft 03 series of amendments to UN Regulation No. 53 which had incorporated the latest modifications to the 01 and 02 series (ECE/TRANS/WP.29/GRE/2019/23 and GRE-82-16). GRE noted that these modifications had been also included in the draft 03 series of amendments to UN Regulation No. 53 submitted for consideration of WP.29 and AC.1 in November 2019 (ECE/TRANS/WP.29/2019/80).

32. The expert from the Netherlands presented an updated proposal that required the mandatory installation of direction indicators on mopeds. (ECE/TRANS/WP.29/GRE/2018/52). Following a brief discussion, GRE invited the proponent to redraft the transitional provisions and to submit a revised document for consideration to the next session.

41. The expert from the Netherlands briefly presented ECE/TRANS/WP.29/GRE/2018/23 to initiate a discussion on the possible mandatory installation of direction indicators on mopeds. The Chair invited experts to provide their comments to the expert from the Netherlands before the end of May with a view to preparing a revised proposal for consideration at the next session.

22. The expert from the Netherlands tabled a revised proposal that requires mandatory installation of direction indicators on mopeds (ECE/TRANS/WP.29/GRE/2019/2 and GRE-81-02-Rev.1). GRE adopted the proposal, as laid down in Annex IV, and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their November 2019 sessions as draft 02 series of amendments to UN Regulation No. 74.