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Proposal and justification for lines defining the limits (diagram) for a new headlamp aiming range
Document GRE-78-23/Rev.1
24 October 2017

Proposal for new headlamp aiming tolerances from the informal group on Visibility, Glare, and Levelling.

Status: Superseded
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Previous Documents, Discussions, and Outcomes
4. | Simplification of lighting and light-signalling UN Regulations

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.

4. | Simplification of lighting and light-signalling Regulations
6. (a) | Regulation No. 48: Proposals for amendments to the 05 and 06 series of amendments
6. (b) | Regulation No. 48: Other proposals for amendments to Regulation No. 48

25. The expert from Poland, in his capacity of Chair of the Informal Working Group on Visibility, Glare and Levelling (IWG VGL), briefed GRE on the IWG activities (GRE-78-36). He introduced a proposal and justification for a new diagram that defines the limits of a new aiming range for the dipped-beam headlamp (GRE-78-23-Rev.1) by lines. He also proposed to delete the 2,000 lm criterion (GRE-78-32).

26. For line 1, GRE generally agreed to a move to the right to the 0.2 per cent mark. Several experts also agreed that this shift should correspond with a shift of line 4 to retain the 1.6 per cent tolerance. The experts from Poland and UK pointed out the need for additional justification of tolerances for moving line 4, and invited OICA to provide the necessary details. Based on the GRE considerations, the experts from Italy, Netherlands, UK and OICA offered to prepare an amendment proposal for consideration at the next session.

Related and Previous Documents
GRE-79-29
GRE/2019/3
Relates to UN R48 |