Proposal for a new regulation to enable type approval of dual-fuel retrofit systems to be installed on already approved and in service heavy duty diesel engines and vehicles.

The latest amendments to the formal proposal GRPE/2016/12 as agreed within the informal group on Gaseous Fueled Vehicles (GFV).

Amendments to the proposal as presented in document GRPE/2016/12.

Presentation on the background and accomplishments of the GFV informal group from January 2008 to June 2016 as the group concludes its final effort on heavy-duty dual fuel engine retrofit systems.