Luas is a tram/light rail system in Dublin, Ireland. There are two main lines: the Green Line, which began operating on 30 June 2004, and the Red Line which opened on 26 September 2004. Since then, both lines have been extended and split into different branches further out of the city. The two lines, as of 2017, now intersect and connect within Dublin city centre. The system now has sixty-seven stations and 42.5 kilometres (26.4 mi) of revenue track, which in 2018 carried 41.8 million passengers, an increase of 11.2% compared to 2017.
Luas is operated by Transdev, under tender from Transport Infrastructure Ireland (TII). The Luas was a major part of the National Transport Authority's strategy (2000–2016). Three extensions to the existing Luas lines have been completed. Construction of a 6 kilometres (3.7 mi) extension to the Green line to the North city centre and Broombridge, which links both Green and Red lines, began in June 2013 and opened to passengers in December 2017. This is the extension route previously known officially as BXD.