Final progress report of the Informal working group on Hydrogen fuel cell vehicle GTR and the proposal to develop a global technical regulation concerning hydrogen fuel cell vehicles.

Recommended changes to the final progress report on the hydrogen fuel-cell vehicle safety global technical regulation proposal.

Draft of the hydrogen fuel-cell vehicles GTR updated with proposals for amendments (to the earlier version GRSP/2011/33) as agreed by GRSP at its December 2011 session.