Proposal to align UN R121 with ISO 2575 per ISO Resolution 664 allowing for use of the diesel engine glow plug symbol with non-diesel technologies that (also) assist engine starting at low temperatures. he current text of the Regulation focuses on diesel engine glow plugs that assist in starting the engine at low temperatures.
42. The expert from OICA presented GRSG-111-37 (superseding ECE/TRANS/WP.29/GRSG/2016/26) aimed at aligning the provisions of UN Regulation No. 121 to those of the 07 series of amendments to UN Regulation No. 16 on safety-belts.
43. The expert from OICA suggested aligning the text of item No. 31 with that of standard ISO 2575 (GRSG-111-14). GRSG generally supported the proposal with a study reservation on GRSG-111-37 from the expert from Germany. GRSG decided to resume consideration of the proposals at its next session in April 2017 and requested the secretariat to circulate both documents (GRSG-111-14 and GRSG-111-37) with an official symbol.