if a vehicle is propelled by a gaseous fuel, a liquefied gaseous fuel or is running on compressed air, the mass of ‘fuel’ in the gaseous fuel tanks may be set to 0 kg;
má dhéantar an fheithicil a thiomáint le breosla gásach, breosla gásach leachtaithe nó má imíonn sí ar aer comhbhrúite, féadfar mais an “bhreosla” san umar breosla gásaigh/sna humair bhreosla ghásaigh a shocrú ag 0 kg;