Progress report of the informal group working on heavy-duty dual-fuel vehicle provisions in UN Regulations 49, 85, and 115.

Status report of the HDDF task force for presentation to the Working Party on Pollution and Energy during its 63rd session.

GFV overview of existing emission definitions applicable to light and heavy duty vehicles in EU and UNECE legislation, including certain definitions currently (February 2012) under discussion, in order to identify possible inconsistencies.

Revised version of document GRPE-62-17 prepared by the chair of the GFV informal group in order to extend the scope of Regulation No. 85 to include heavy-duty dual-fuel (diesel-gas) engines.

Gaseous-fueled vehicles informal group review of the proposals developed by the Heavy-Duty Dual-Fuel Task Force to introduce related provisions into UN Regulations Nos. 49 and 85.

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).

GRPE-adopted proposal to introduce provisions for heavy-duty dual-fuel vehicles into UN Regulation No. 85.

This document is a revised version of informal document GRPE-62-17 intended to introduce provisions for heavy-duty dual-fuel vehicles into UN Regulation No. 85 in accordance with those proposed in the GFV proposal to amend Regulation R49.