GTB guidelines for introduction and evaluation of LED light source categories intended for forward lighting applications
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Reference Number: GRE-77-04
Origin: GTB
Date: 20 January 2017
Related Documents:
GRE/2017/16 | Proposal for amendment 1 to the original version of the Consolidated Resolution on the common specification of light source categories
GRE/2018/39 | UN R128: Proposal for Supplement [9]
Discussion(s):
Working Party on Lighting and Light-signalling | Session 77 | 4-7 Apr 2017

15. The expert from GTB presented proposals for amendments to Regulation No. 128 and to the Consolidated Resolution (R.E.5) that introduce a new LED light source category for forward lighting applications (ECE/TRANS/WP.29/GRE/2017/5, ECE/TRANS/WP.29/GRE/2017/6, GRE-77-04, GRE-77-12, GRE-77-13). He explained that GTB had abandoned the concept of “thermal grade” and instead proposed the introduction of a maximum test temperature to ensure interchangeability between approved light sources from different manufacturers. GRE also noted the proposal by GTB to incorporate LED light sources into the new RID Regulation (GRE-77-14).

16. The expert from UK requested more time to study the proposals. The expert of Germany proposed modifications to the notion of “maximum test temperature”. GRE decided to revert to this issue at the next session and invited GRE experts to study the proposals and to send their comments to GTB and IWG SLR.