8. Mr. Rijnders in his presentation on the ‘Process of the GFV HDDF Retrofit Activity’ (GFV-34-02) referenced document GFV-29-03 to identify the fundamentals and principals of HDDF-retrofit that have been discussed at earlier GFV meetings. Since many participants in this meeting generally are not involved in HDDF this information supplied good background to the meeting.

9. The concept of ‘retrofit’ was maintained and OICA proposed that there would be certifications for a conversion system; for a converted vehicle; and requirements for installing a certified engine on a converted vehicle.

10. AEGPL proposed a harmonized method for the classification, evaluation and approval of retrofit systems fit in a HD road vehicle. Methods to certify engines retrofitted into a vehicle and application of a certified engine into a vehicle will be lower on the priority list to address.

11. The family definition was discussed on 3rd April 2014 and is a difficult topic for dual-fuel retrofits. OICA will forward some optional language to address application of the family concept to D-F retrofitters.

12. Concepts on in-service conformity (ISC) need to be more fully addressed.

13. Other elements in detail can be seen in Mr. Rijnders’ document GFV-34-02.