Working Party on Lighting and Light-signalling | Session 71 | 31 Mar-3 Apr 2014
Geneva
Agenda Item 4. (b)
Proposal for amendments to the 06 series of amendments

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.

15. The expert from the Netherlands recalled the GRE considerations, at its sixty-ninth and seventieth sessions, of tell-tale requirements and the possible need for aligning UN Regulation No. 48 with relevant requirements contained in UN Regulation No. 121. Given the complexity of the issue, he suggested continuing with more in-depth discussions on these issues in a smaller group of interested experts (GRE-71-11). Following this request, GRE consented to establishing a taskforce on tell-tale requirements, for which the expert from the Netherlands would act as Chair and OICA as secretary. GRE decided to keep this issue on the agenda and requested the task force to report on its findings at the next session of GRE.

Documentation
GRE-67-27 OICA comments on Polish headlamp aiming proposal GRE/2012/21 (OICA)
GRE-68-20/Rev.1 Comments on document GRE/2012/27: Revised (OICA)
GRE-71-03 Proposal for amendments to Revision 8 of UN Regulation No. 48
GRE-71-11 Tell-tale requirements in Regulations Nos. 48 and 121 and proposal of a task force (Netherlands)
GRE-71-15 GTB Study Visibility and Glare (GTB)
GRE-71-18 Proposal for a Supplement to the 04 series of amendments and a Supplement to the 05 series of amendments to Regulation No. 48 (France)
GRE-71-32 GTB Task Force: Coordination of Automotive Visibility and Glare Studies (GTB)
GRE-71-35 GTB Working Group on Installation: Status Report (GTB)
GRE/2013/2 Proposal for Supplement 3 to the 06 series of amendments to Regulation No. 48 (Netherlands)
GRE/2014/11 Proposal for Supplement 3 to the 06 series of amendments to Regulation No. 48 (Poland)
GRE/2014/13 Proposal for amendments to Regulation No. 48 (CLEPA, ADSEAT, and ADSEAT)
WP.29/2011/99 Proposal for Supplement 8 to the 04 series of amendments to Regulation No. 48
WP.29/2011/99/Corr.1 Corrigenda to document WP.29/2011/99
WP.29/2011/99/Corr.2 Proposal for Supplement 1 to the 06 series of amendments to Regulation No. 48