47. The expert from GTB presented driver assistance projections as a new feature of the adaptive driving beam with the aim to increase driver’s comfort and road safety (GRE-82-40). The presentation was accompanied by a live demonstration of three vehicles equipped with the new feature. To allow for the driver assistance projections, the expert proposed amendments to UN Regulations Nos. 48 and [149] (GRE-82-04, GRE-82-40).

48. GRE welcomed both GTB presentation and demonstration. Several experts were of the view that the new system could bring safety benefits provided that:

• Road projections symbols are standardized (e.g. according to UN Regulation No. 121).
• Road projections symbols do not distract other drivers.

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.

36. The expert from IMMA recalled the requirements on Adaptive Driving Beam (ADB) in UN Regulation No. 48 and proposed similar provisions for amending UN Regulation No. 53 (GRE-82-13, GRE-82-18, GRE-82-46-Rev.1). Following a brief exchange of views, the Chair invited GRE experts to send their comments to IMMA with a view to preparing an official document for consideration at the next session.

47. The expert from GTB presented driver assistance projections as a new feature of the adaptive driving beam with the aim to increase driver’s comfort and road safety (GRE-82-40). The presentation was accompanied by a live demonstration of three vehicles equipped with the new feature. To allow for the driver assistance projections, the expert proposed amendments to UN Regulations Nos. 48 and [149] (GRE-82-04, GRE-82-40).

48. GRE welcomed both GTB presentation and demonstration. Several experts were of the view that the new system could bring safety benefits provided that:

• Road projections symbols are standardized (e.g. according to UN Regulation No. 121).
• Road projections symbols do not distract other drivers.

23. The expert of GTB tabled a proposal which allowed for projection of driver assistance symbols on the road ahead of the vehicle, as part of the adaptive driving beam (ADB). This proposal was submitted in a package with an amendment to UN Regulation No. 149 (ECE/TRANS/WP.29/GRE/2020/4 and GRE-83-30). The expert from OICA presented supporting material for the proposal (GRE-83-33 and GRE-83-34), while the experts from Japan expressed concerns identified in the course of their own study (GRE-83-49). Other experts also expressed various views and concerns, such as the need for possible restrictions and standardization of the projected symbols, and that distraction must be avoided. Based on the comments received and pending further studies on the issue, GRE requested GTB to submit a revised document to the next session and invited all interested parties to contribute. Meanwhile, GRE asked the expert from Finland to liaise with the Working Party on General Safety Provisions (GRSG) which had established a Task Force on Field of Vision Assistant.

8. GRE was informed that the three new simplified UN Regulations Nos. [148] on Light-Signalling Devices (LSD), [149] on Road Illumination Devices (RID) and [150] on Retro-Reflective Devices (RRD) were expected to enter into force on 15 November 2019. GRE noted that IWG SLR had identified errors inadvertently introduced in the text of the new UN Regulation No. [149] and that a correction had been submitted to the WP.29 session in November 2019 (ECE/TRANS/WP.29/2019/125, GRE-82-02). GRE supported the correction.

12. The expert from IWG SLR introduced a proposal for a new series of amendments to UN Regulation No. 149 (ECE/TRANS/WP.29/GRE/2021/14, GRE-85-04 and GRE-85-14). The expert from IEC proposed updating the references to standard IEC 60809 (GRE-85-09). GRE adopted ECE/TRANS/WP.29/GRE/2021/14, as amended by GRE-85-09 and GRE-85-14, and requested the secretariat to submit it for consideration and vote at the June 2022 sessions of WP.29 and AC.1 as draft 01 series of amendments to UN Regulation No. 149.

13. For reasons mentioned at the previous session (GRE-84-28), the expert from Poland was not in a position to support the IWG SLR proposal. GRE also recalled the alternative transitional provision in GRE-85-30 and requested IWG SLR to consider it and to report back to GRE at its next session in April 2022 (see paragraph 10 above).

14. The expert from Germany wondered if it would be acceptable to drive, for a limited time, with one headlamp (passing beam) of the matched pair, as defined in paragraph 4.18. of ECE/TRANS/WP.29/GRE/2021/14. He recalled that, under the current requirements for periodical technical inspections in the European Union (e.g. paragraph. 4.1.1 (a) of directive 2014/45/EU), a non-working headlamp was a minor defect which would not impede passing the inspection. He added that footnote (a) to paragraph 5.2.2. in ECE/TRANS/WP.29/GRE/2021/14 might lead to an expectation that, in the worst-case scenario with one remaining headlamp of the matched pair, only 50 per cent of luminous intensity would be reached in some elements instead of 100 per cent for one headlamp. According to the expert, this could affect the assessment of roadside inspections and periodical technical inspections. GRE requested IWG SLR to address the question raised by the expert from Germany.

27. GRE stressed that the adopted amendments to UN Regulations Nos. 48, 53, 74, 86, 148, 149 and 150, as reflected in paragraphs 9, 12, 15, 17, 20, 23–26, 31 and 33, should be submitted as a package to the June 2022 sessions of WP.29 and AC.1. GRE agreed to review these proposals at its next session in April 2022.

11. The Secretary of IWG SLR introduced the first proposals for amendments to the original versions of the LSD, RID and RRD UN Regulations (ECE/TRANS/WP.29/GRE/2018/36, ECE/TRANS/WP.29/GRE/2018/37 and ECE/TRANS/WP.29/GRE/2018/38). GRE adopted these proposals and noted that some of these amendments were essentially corrections of errors in the original SLR package while others were improvements. GRE stressed the need to rectify the discovered errors, such as the correction of Table 9 in the RID UN Regulation (as proposed in ECE/TRANS/WP.29/GRE/2018/37) and the correction of Annex 7 of the RRD UN Regulation (as proposed in ECE/TRANS/WP.29/GRE/2018/38) and requested the secretariat to submit these corrections to WP.29 and AC.1 for consideration at their November 2018 sessions as corrigenda to the original SLR package. The “improvement” amendments would be submitted to WP.29 and AC.1 for consideration at their June 2019 sessions, as explained in para. 8 above.

12. The expert from IWG SLR introduced a proposal for a new series of amendments to UN Regulation No. 149 (ECE/TRANS/WP.29/GRE/2021/14, GRE-85-04 and GRE-85-14). The expert from IEC proposed updating the references to standard IEC 60809 (GRE-85-09). GRE adopted ECE/TRANS/WP.29/GRE/2021/14, as amended by GRE-85-09 and GRE-85-14, and requested the secretariat to submit it for consideration and vote at the June 2022 sessions of WP.29 and AC.1 as draft 01 series of amendments to UN Regulation No. 149.

13. For reasons mentioned at the previous session (GRE-84-28), the expert from Poland was not in a position to support the IWG SLR proposal. GRE also recalled the alternative transitional provision in GRE-85-30 and requested IWG SLR to consider it and to report back to GRE at its next session in April 2022 (see paragraph 10 above).

14. The expert from Germany wondered if it would be acceptable to drive, for a limited time, with one headlamp (passing beam) of the matched pair, as defined in paragraph 4.18. of ECE/TRANS/WP.29/GRE/2021/14. He recalled that, under the current requirements for periodical technical inspections in the European Union (e.g. paragraph. 4.1.1 (a) of directive 2014/45/EU), a non-working headlamp was a minor defect which would not impede passing the inspection. He added that footnote (a) to paragraph 5.2.2. in ECE/TRANS/WP.29/GRE/2021/14 might lead to an expectation that, in the worst-case scenario with one remaining headlamp of the matched pair, only 50 per cent of luminous intensity would be reached in some elements instead of 100 per cent for one headlamp. According to the expert, this could affect the assessment of roadside inspections and periodical technical inspections. GRE requested IWG SLR to address the question raised by the expert from Germany.

27. GRE stressed that the adopted amendments to UN Regulations Nos. 48, 53, 74, 86, 148, 149 and 150, as reflected in paragraphs 9, 12, 15, 17, 20, 23–26, 31 and 33, should be submitted as a package to the June 2022 sessions of WP.29 and AC.1. GRE agreed to review these proposals at its next session in April 2022.

69. The World Forum considered the draft amendments under agenda items 4.6.1 to 4.6.15 and recommended their submission to AC.1 for voting, subject to the following modifications:

• Item 4.6.3, document ECE/TRANS/WP.29/2019/81, last page, Table A2-1, line “Rear position pair (MR)”, replace “15°/15°” with “15°/10°”.
• Item 4.6.5, document ECE/TRANS/WP.29/2019/125, amend the title to read “Supplement 1 to the original series of UN Regulation No. [149] on Road Illumination Devices (RID)”.

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.

14. Pending the outcome of the discussion on light emitting diode (LED) substitute light sources (see agenda item 5, paras. 17-19), GRE agreed to postpone consideration of ECE/TRANS/WP.29/GRE/2017/14, ECE/TRANS/WP.29/GRE/2017/15 and GRE-78-04.

11. The Secretary of IWG SLR introduced the first proposals for amendments to the original versions of the LSD, RID and RRD UN Regulations (ECE/TRANS/WP.29/GRE/2018/36, ECE/TRANS/WP.29/GRE/2018/37 and ECE/TRANS/WP.29/GRE/2018/38). GRE adopted these proposals and noted that some of these amendments were essentially corrections of errors in the original SLR package while others were improvements. GRE stressed the need to rectify the discovered errors, such as the correction of Table 9 in the RID UN Regulation (as proposed in ECE/TRANS/WP.29/GRE/2018/37) and the correction of Annex 7 of the RRD UN Regulation (as proposed in ECE/TRANS/WP.29/GRE/2018/38) and requested the secretariat to submit these corrections to WP.29 and AC.1 for consideration at their November 2018 sessions as corrigenda to the original SLR package. The “improvement” amendments would be submitted to WP.29 and AC.1 for consideration at their June 2019 sessions, as explained in para. 8 above.

43. AC.2 recommended postponing the vote on proposed new UN Regulations under agenda items 4.12.1 – 4.12.3 and deferred their consideration as revised proposals to the March 2019 session of WP.29.

121. The World Forum considered the proposals for new UN Regulations on Light Signalling Devices (LSD), on Road Illumination Devices (RID) and on Retro-Reflective Devices under items 4.12.1 to 4.12.3. The World Forum agreed with the view of AC.2 (see para. 43 above) and recommended postponing the vote and deferring their consideration to the March 2019 session of AC.1.

69. The World Forum considered the draft amendments under agenda items 4.6.1 to 4.6.15 and recommended their submission to AC.1 for voting, subject to the following modifications:

• Item 4.6.3, document ECE/TRANS/WP.29/2019/81, last page, Table A2-1, line “Rear position pair (MR)”, replace “15°/15°” with “15°/10°”.
• Item 4.6.5, document ECE/TRANS/WP.29/2019/125, amend the title to read “Supplement 1 to the original series of UN Regulation No. [149] on Road Illumination Devices (RID)”.