Trains are powered via a 1500V DC overhead catenary along part of the Irish Rail Network, all of which is Irish Broad Gauge. The national rail operator, Iarnród Éireann (IE), administers the DART system. On its inception in 1984, the DART was operated by Coras Iompair Éireann (CIÉ) of which IE is now a subsidiary. Part of the DART route, from the city centre to Dún Laoghaire, is of historic note — it was the first railway in Ireland, opening as the Dublin and Kingstown Railway on 17 December 1834. The DART forms part of the Dublin Suburban Rail network.