Proposal to insert Footnote 18 for Tell-tale 1 (Master lighting switch) stating, “Symbol may be shown in other colours than specified in column 5 in order to convey different meanings according to the general colour coding as proposed in paragraph 5. of ISO 2575-2004.”

49. The expert from OICA presented ECE/TRANS/WP.29/GRSG/2017/18 to clarify footnote ¹⁸ where tell-tales Nos. 1 and 19 were combined. Some experts were of the opinion that footnote ¹² already offers that possibility. Following the discussion, the expert from OICA offered an alternative proposal GRSG-113-39 that simplifies the handling of colour changes of tell-tales and to remove footnote 18 and all references to it. The expert from France preferred to keep the existing text of footnote ¹⁸ and to only insert under symbol No. 1 a reference to footnote ¹⁸, as reflected in GRSG-113-42. GRSG agreed to go forward with a two-step approach and adopted ECE/TRANS/WP.29/GRSG/2017/18 as reproduced below.

No.	Column 1	Column 2	Column 3	Column 4	Column 5
	Item	Symbol 2	Function	Illumination	Colour
1.	Master lighting switch Tell-tale may not act as the tell-tale for the position (side) lamps	1, 18	Control	No
			Tell-tale 12	Yes	Green

51. As a second step, GRSG requested the secretariat to distribute GRSG-113-39 with an official symbol, for consideration at the next GRSG session and to also circulate it all WP.29 Working Parties concerned.

37. GRE was informed that the Working Party on General Safety Provisions, at its recent session, had adopted amendment proposals on colours to Regulation No. 121 (Identification of controls, tell-tales and indicators) (GRSG-113-42 and GRSG-113-39). GRE supported the short-term solution proposed in GRSG-113-42 and noted that the long-term solution (GRSG-113-39) would be published as an official GRSG document and presented to GRE.

Proposal to clarify that footnote ¹⁸ of Table 1 applies to telltale no. 1 (Master lighting switch) when it is combined with telltale no. 19 (Position, side marker, and/or end-outline marker lamps). Footnote ¹⁸ states, “Symbol may be shown in other colours than specified in column 5 in order to convey different meanings according to the general colour coding as proposed in paragraph 5. of ISO 2575-2004.”

49. The expert from OICA presented ECE/TRANS/WP.29/GRSG/2017/18 to clarify footnote ¹⁸ where tell-tales Nos. 1 and 19 were combined. Some experts were of the opinion that footnote ¹² already offers that possibility. Following the discussion, the expert from OICA offered an alternative proposal GRSG-113-39 that simplifies the handling of colour changes of tell-tales and to remove footnote 18 and all references to it. The expert from France preferred to keep the existing text of footnote ¹⁸ and to only insert under symbol No. 1 a reference to footnote ¹⁸, as reflected in GRSG-113-42. GRSG agreed to go forward with a two-step approach and adopted ECE/TRANS/WP.29/GRSG/2017/18 as reproduced below.

No.	Column 1	Column 2	Column 3	Column 4	Column 5
	Item	Symbol 2	Function	Illumination	Colour
1.	Master lighting switch Tell-tale may not act as the tell-tale for the position (side) lamps	1, 18	Control	No
			Tell-tale 12	Yes	Green

51. As a second step, GRSG requested the secretariat to distribute GRSG-113-39 with an official symbol, for consideration at the next GRSG session and to also circulate it all WP.29 Working Parties concerned.

Proposal pursuant to discussions on the application of footnote ¹⁸ under Table 1 concerning tell-tale symbols and the use of colours to convey different meanings. ISO standard 2575-2004, para. 5.1. allows for the use of different colours to convey a change in the operating condition. This proposal would remove the current footnote ¹⁸ text and application of the footnote to telltales 2, 9-12, and 19 pending a decision on the proposal to apply a revised footnote to the master lighting switch (tell-tale 1). Paragraph 5.4.1.1. of UN R121 references ISO 2575-2004 which was developed to simplify the application of UN R121 when colour changes are adopted in other UN Regulations; however, OICA submits that the footnote which references ISO 2575-2004 in relation to specific lighting devices or systems creates a degree of confusion. (If approved, this proposal would likely impact Supplement 3 to the 01 series rather than Supplement 2 given that WP.29 at its November 2017 session adopted the proposal to add a telltale and symbols for “Accident Emergency Call System (AECS)” and to align UN R121 with the 07 series of amendments to UN Regulation No. 16 as Supplement 2 to the 01 series.)

43. Recalling discussions at the previous GRSG session on the handling of colour changes of controls, tell-tales and indicators, the expert from OICA presented ECE/TRANS/WP.29/GRSG/2018/6 as a long-term solution. He explained that the proposal aimed to remove the references in Table 1 to footnote 18 and to only keep the reference to standard ISO 2575:2004. GRSG noted study reservations by the experts from France and the United Kingdom. GRSG agreed to resume consideration of this subject at its next session.

51. The expert from OICA recalled the discussion (ECE/TRANS/WP.29/GRSG/2018/6) at the previous GRSG session on the handling of colour changes of controls, tell-tales and indicators by deleting footnote ¹⁸ to table 1 and inserting only a reference to standard ISO 2575. Underlining the importance of colour for tell-tales, the expert from France preferred to keep footnote ¹⁸. The expert from OICA offered to review the proposal and to insert a new footnote for the tell-tales that impose colour. GRSG agreed to resume consideration of this subject at its next session on the basis of a revised document jointly prepared by the experts from France and OICA.

49. The expert from the Republic of Korea recalled the discussion on GRSG-115-14-Rev.1 at the previous session, to add into UN Regulation No. 121 a new symbol for “power on/power off” controls in vehicles equipped with an electric powertrain, such as electric vehicles. He thanked GRSG for the comments received, concluded that the current symbol in the UN Regulation was sufficient and that no further follow-up was necessary.

50. GRSG endorsed the request by OICA to defer discussion on ECE/TRANS/WP.29/GRSG/2018/6 to a further session.

51. GRSG agreed to resume consideration on this item at its next session in October 2019.