In order for the proposed new UN Regulation transposing the GTR on hydrogen fuel-cell vehicles into the 1958 Agreement to be applicable in Japan, the regulation needs to make clear that its scope does not include (i) the electrical safety of electric power train, (ii) the material compatibility and hydrogen embrittlement of the vehicle fuel system and (iii) the post-crash fuel system integrity in the event of full width frontal impact and rear impact. This allows Japanese national regulations to be applied even when accepting a vehicle type-approved under the UN Regulation.