on board the train, during transit between the last station of departure in a third country and the first station of arrival on the territory of a Member State or vice versa;
ar bord na traenach, le linn idirthurais idir an stáisiún deireanach a n-imeoidh sí uaidh i dtríú tír agus an chéad stáisiún a dtiocfaidh sí isteach ann ar chríoch Ballstáit, nó vice versa;