Revised submission by the Chair of the informal group on Gaseous Fuelled Vehicles (GFV) to redefine the class of bi-fuel vehicles to permit the simultaneous use of gas and petrol in gas mode in UN Regulation No. 83. This document replaces GRPE/2012/6.

Revised submission from the International Organization of Motor Vehicle Manufacturers proposing to incorporate the content of Regulation (EU) 566/2011 into the 06 series of amendments to UN Regulation No. 83, succeeding informal document GRPE-63-16 and replacing GRPE/2012/11.

Supplements 1 and 2 to the 06 series of amendments (Revision 4) to UN Regulation No. 83 include provisions to amend Annex 4; however Annex 4 does not exist, having been superseded by Annex 4a. The UNECE Secretariat proposes to delete the references to Annex 4 in the two supplements.

Submission prepared by the Chair of the informal group on Gaseous Fuelled Vehicles (GFV) to correct measurement errors contained in documents GRPE/2012/6 (concerning UN R83) and GRPE/2012/7 (concerning UN R115) when weighing method and G20/G25 reference fuels are used.

Presentation on the status of GFV activities, including for heavy-duty dual-fuel vehicles, bi-fuel gas vehicles, liquefied natural gas (LNG) vehicles, and support to the European Commission concerning THC/CH4 (methane).