50. The Chair of the informal group on GFV reported on the work progress made by the group (GRPE-66-26). He explained that the work of the Heavy Duty Dual-Fuel Task Force (HDDF TF) focused on the proposals discussed under agenda items 4(c) (UN Regulation No. 49). The GFV group also developed the proposals discussed under agenda item 5 (UN Regulation No. 115) and the request by the Working Party on General Safety (GRSG) to GRPE to review, with respect to environmental issues, the proposal to amend UN Regulation No. 110 (specific equipment for CNG/LNG) adopted at its 104th session (GRPE-66-05). He explained that forthcoming work of the GFV group will be aimed to develop a new UN Regulation for heavy duty dual-fuel retrofit.

51. Focusing on the GRSG request, the GFV Chair briefly introduced GRPE-66-20 and GRPE-66-27, prepared by the Liquefied Natural Gas Task Force (LNG-TF). The documents contain information on environmental aspects underlying the GRSG request to GRPE concerned the issue of venting Liquefied Natural Gas (LNG) into the atmosphere.

52. The expert from Italy supported the proposal to develop a new UN Regulation for heavy-duty dual-fuel retrofit. The expert from OICA underlined the need to make sure that the scope of this new UN Regulation is restricted, initially, to heavy duty road vehicles and diesel-gas fuels. The possibility to broaden its boundaries (e.g. to non-road mobile machinery) shall be explored at a later stage.

53. GRPE acknowledged the progress made by the group, endorsed its proposal to develop a new UN Regulation for heavy-duty dual-fuel retrofit, and, considering the GRSG request, agreed that no regulatory action with respect to the environmental issues shall be taken. GRSG will be informed through the GRPE report.