Comments on discussions from the 27th SLR informal group discussion.

37. The expert from Poland presented GRSG-116-33 to clarify the application of the provisions in Annex 1 of the UN Regulation. GRSG noted several concerns on the proposal. The expert from EC offered to review the proposed text taking into account the comments received and to include a revised wording in an official document (see paragraph 35 above). GRSG welcomed this offer and agreed to resume consideration of this subject at its next session.

Proposal for changes to the discussion document presenting potential new requirements for headlamp levelling, in particular regarding the vertical inclination in relation to the dipped-beam headlamp mounting height.

10. The expert from IWG SLR presented a proposal for a new 07 series of amendments to UN Regulation No. 48 (ECE/TRANS/WP.29/GRE/2019/3). The expert from Poland commented on the proposal (GRE-81-13 and GRE-81-16). GRE focused its discussion on the aiming diagram in paragraph 6.2.6.1.2. Following an in-depth consideration, GRE agreed on a modified diagram (GRE-81-21 and Annex II) and requested IWG SLR to prepare, on the basis of the new diagram, a revised proposal for consideration at the next session. The experts from Germany and Poland made study reservations. The expert from Germany also pointed out that, at the next session, he would present the outcome of a research project on the issue.

Supporting data justifying the headlamp aiming and cut-off points diagrammed in the proposal for a new series of amendments (GRE-81-13).

10. The expert from IWG SLR presented a proposal for a new 07 series of amendments to UN Regulation No. 48 (ECE/TRANS/WP.29/GRE/2019/3). The expert from Poland commented on the proposal (GRE-81-13 and GRE-81-16). GRE focused its discussion on the aiming diagram in paragraph 6.2.6.1.2. Following an in-depth consideration, GRE agreed on a modified diagram (GRE-81-21 and Annex II) and requested IWG SLR to prepare, on the basis of the new diagram, a revised proposal for consideration at the next session. The experts from Germany and Poland made study reservations. The expert from Germany also pointed out that, at the next session, he would present the outcome of a research project on the issue.

8. The expert from the Informal Working Group “Simplification of the Lighting and Light-Signalling Regulations” (IWG SLR) reported on their progress and requested guidance from GRE (GRE-81-19). The expert from Poland commented on the IWG SLR request (GRE-81-22). GRE agreed that:

• The headlamp provisions should continue to be expressed in terms of the luminous intensities equivalent to the illuminance measured on a screen at a distance of 25 m.
• All technologies should be allowed for all SLR functions. Requirements should be common for all technologies; test requirements could be technology-specific.
• Combination of different light source technologies should be possible for all SLR functions.

Proposal to align UN R48 with provisions in UN R4 by introducing parameters for luminance levels, maximum gradient value, angles of visibility and light incidence angle which are necessary to determine the geometric position of devices in relation to the rear registration plate.

27. The expert from Poland proposed modifications to provisions on the rear registration plate lamps (GRE-82-08). Following a brief exchange of views, GRE invited the expert to submit a formal document for consideration at the next session.

Proposal to clarify the definition of “‘on’ time” (t_H) to address cases where a single flash consists of several flashes.

38. The expert from Poland proposed to clarify the definition of the “on” time for the case of a group of flashes (GRE-82-09). The expert from GTB pointed out that the GTB Working Group Photometry had recently considered an alternative wording for the same purpose. GRE invited both experts to submit a new proposal to the next session.

Proposal to include daytime running lamps in the provision for ‘an assembly of two independent lamps to be type approved as lamp marked “D”’.

50. The expert from Poland proposed to add a reference to DRL in paragraph 4.4.1. of UN Regulations No. [148] (GRE-82-10-Rev.1). The expert from IWG SLR stated that this proposal would be included into the consolidated package of amendments to the above UN Regulation.

The IWG-VGL group proposed that the CoP requirements would be the same as for the type-approval. Therefore, Poland will not support the proposal to extend them by another 0.4%.

31. The expert from IWG SLR recalled the previous discussions on the aiming diagram in paragraph 6.2.6.1.2. (ECE/TRANS/WP.29/GRE/81, para. 10 and Annex II) and presented GRE-82-25, which had been prepared in line with the GRE request. The expert from Poland proposed a revised diagram (GRE-82-43). For the diagram in GRE-82-25, the experts from Japan, Poland and the United Kingdom expressed their preference to maintain the 2000 lm criteria for automatic levelling and headlamp cleaning. The experts from Germany and the United Kingdom pointed out the need to consider the aiming tolerance for the purposes of, respectively, Periodic Technical Inspections (PTI) and Conformity of Production (CoP). GRE requested IWG SLR to consider the above elements and to prepare a revised document for the next session of GRE.

Proposal to discuss Supplement 18 to 04 series of amendments to UN R44 in lieu of a specific child restraint system that would fall outside the scope of the regulation