(a) A vehicle, other than EX/III or FL vehicle or than a MEMU, intended for the carriage of dangerous goods in fixed tanks or demountable tanks with a capacity exceeding 1 m³  or in tank-containers, portable tanks or MEGCs with an individual capacity exceeding 3 m³; or

(b) A battery-vehicle with a total capacity exceeding 1 m³ other than a FL vehicle.