The
Dublin-Rosslare railway line is a main rail route between
Dublin Connolly station and
Rosslare Europort, where it connects with ferry services to the
United Kingdom and mainland Europe. The line between Dublin and Greystones is electrified and forms the southern part of the
DART service. Between Bray and Rosslare the line is single track only. The line connects with the
Limerick-Rosslare line outside
Rosslare Strand. From Wicklow on, semaphore signalling was used until April 2008, when the entire line was upgraded to the mini-CTC system controlled from Dublin Connolly. Although it is considered a separate route, the line is continuous after Dublin Connolly, where it connects with the
Belfast-Dublin main line. The section between Westland Row (Dublin Pearse) and a point on the line just after Salthill and Monkstown station is the oldest railway line in Ireland, opening in 1834. At that time, the railway terminated adjacent to the start of Dún Laoghaire Harbour's West Pier, at a station called Dunleary.