'isolated network' means the rail network of a Member State, or a part thereof, with a track gauge different from that of the European standard nominal track gauge (1435 mm), for which certain major infrastructure investments cannot be justified in economic cost-benefit terms by virtue of the specificities of that network arising from its geographic detachment or peripheral location;
ciallaíonn 'gréasán iargúlta' gréasán iarnróid Ballstáit, nó cuid de, a bhfuil a leithead rianta bunoscionn le leithead rianta ainmniúil caighdeánach Eorpach (1435 mm), nach bhféadfaí infheistíocht mhór áirithe i mbonneagar a chosaint ina leith i dtéarmaí costais-sochair eacnamaíoch de bhua sonraíochtaí an ghréasáin sin arbh ann dóibh de bharr é a bheith scoite go geografach nó lonnaithe in áit fhorimeallach;