This agenda item relates to UN R48 Installation of Lighting.
Working Party on Lighting and Light-signalling | Session 71 | 31 Mar-3 Apr 2014

11. The expert from GTB introduced the results of their studies on visibility and glare (GRE-71-15 and GRE-71-32). The study concentrated on levelling in relation to load and its major objectives were to improve the understanding of different factors that influence visibility and glare and to identify results of the study that might reveal alternatives for automatic static levelling. The expert from OICA recalled their presentations on loading definitions and achievable aiming tolerances (see also GRE-67-27 and GRE-68-20).

12. The expert from Poland introduced a revised proposal ECE/TRANS/WP.29/GRE/2014/11 on initial aiming of dipped-beam headlamps and considering the original 75 +/-25 m visibility distance requirement.

13. GRE was of the view that the study had pointed out that the type of light source and its luminous flux are not the deciding factors in headlamp glare. Instead, the most important factors seem to be the vehicle pitch angle, loading conditions and initial headlamp aim. Therefore, the light source choice (LED) and the light source 2,000 lm criteria in UN Regulation No. 48 were found unnecessarily restrictive and creating barriers to new technologies. Different views were expressed whether automatic levelling should become a requirement for all categories of vehicles and light sources. Operating voltage was also mentioned as an additional factor of glare.

14. GRE invited the experts from Poland, GTB and OICA to submit one coherent proposal for amendments to UN Regulation No. 48 addressing the visibility distance and glare issuto the next GRE session.

16. The secretariat proposed a correction to para. 6.2.7.6.1. of Revision 8 of UN Regulation No. 48 (GRE-71-03). The Chair also proposed the replacement in para. 6.6.7.2. of the incorrect reference to para. 6.22. by para. 6.23. GRE adopted the proposal amended by the Chair and decided to defer the submission of this proposal to WP.29 and AC.1 awaiting the adoption of further corrections that the expert from Italy volunteered to prepare (see para. 17 below).

17. The expert from Italy informed the GRE that he had found a number of errors in Regulation No. 48. GRE invited the expert from Italy to submit a document for the next session (see para. 16 above).

21. The expert from Germany presented GRE-71-25 introducing flashing side marker lamps for vehicles of categories N2, N3, O3 and O4, aimed at informing vulnerable road users about the intention of a heavy goods vehicle to make a turn. The experts from Italy, Netherlands and CLEPA delivered a number of comments, in particular suggesting the extension of this proposal to M2 and M3 buses. The expert from Germany volunteered to submit a revised official document for the next session of GRE.

Working Party on Lighting and Light-signalling | Session 72 | 20-22 Oct 2014

9. Taking into account the recent GTB study (GRE-71-32), the expert from France proposed to delete a design restrictive requirement for an automatic levelling device for all headlamps with LED light sources, irrespective of their luminous flux (ECE/TRANS/WP.29/GRE/2014/34). GRE agreed that this proposal should be tackled at the next session, in conjunction with the GTB proposals on visibility and glare issues (see para. 14 below).

12. The expert from Germany presented a revised proposal to require side marker lamps to flash together with direction indicators on heavy goods vehicles and buses (ECE/TRANS/WP.29/GRE/2014/33, GRE-72-22) as well as additional transitional provisions (GRE-72-05 and GRE-72-06). Following an in-depth discussion, GRE adopted this proposal as contained in Annex VI to the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their March 2015 sessions as draft Supplement 5 to the 06 series of amendments to Regulation No. 48. GRE agreed not to include any specific transitional provisions, because the transitional provisions for the 06 series of amendments would also apply to this proposal.

13. The expert from GTB proposed to remove a conflict with the text of Regulation No. 19 on markings of front fog lamps that are reciprocally incorporated with the main beam (ECE/TRANS/WP.29/GRE/2014/22, GRE-72-10). GRE adopted this proposal as contained in Annex VII to the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their March 2015 sessions as a draft Supplements not only to the 06, but also to the 04 and 05 series of amendments to Regulation No. 48.

14. The expert from GTB recalled the outcome of the GTB study on visibility and glare (GRE-71-32) and presented a first draft of amendments to Regulation No. 48 addressing the visibility distance and glare issues (GRE-72-07). This proposal received comments by the expert from Poland (GRE-72-23-Rev.1). Various experts generally agreed that the current requirement for automatic levelling in Regulation No. 48 (2,000 lm luminous flux of the light source) should be replaced by other deciding factors for headlamp glare, such as the vehicle pitch angle, loading conditions and initial headlamp aiming. However, no consensus was reached on exact replacement criteria. The expert from UK suggested that an informal group be established to speed up the finalization of the amendment proposal. The experts from France, Germany, Italy and the Netherlands were of the view that GTB should be tasked to submit a concrete proposal to the next session of GRE. GRE invited GTB, OICA and interested Contracting Parties to organize a meeting with the aim to elaborate a revised proposal. The experts from France, Germany, Italy, Netherlands, Poland and UK expressed their interest in participating in this meeting.

Documentation
GRE-71-32 | GTB Task Force: Coordination of Automotive Visibility and Glare Studies (GTB)
GRE-72-05 | Proposal to amend the draft Supplement to the 06 series of amendments of Regulation No. 48 (Germany)
GRE-72-06 | Proposal for a new Supplement to the 05 Series of amendments to Regulation No. 48
GRE-72-07 | Suggestion on how to implement the outcome of the GTB Visibility and Glare Study in Regulation No. 48 (GTB)
GRE-72-10 | Proposal for Supplement 6 to the 06 series of amendments to Regulation No. 48 (GTB)
GRE-72-22 | Revised proposal for a Supplement to the 06 series of amendments to UN Regulation No. 48 (Germany)
GRE-72-23/Rev.1 | Poland comments on GTB suggestions for implementing the GTB Visibility and Glare Study in Regulation No. 48 (Poland)
GRE/2014/22 | Proposal for Supplement 6 to the 06 series of amendments to Regulation No. 48 (GTB)
GRE/2014/33 | Proposal for a Supplement to the 06 series of amendments of Regulation No. 48 (Germany)