The Luas Red Line has been extended to Dublin's Docklands, with four new stations opening to the public for the first time today.
The new stops will allow commuters travel to the heart of the Irish Financial Services Centre and concerts at the O2.
The new stops are at George's Dock, Mayor Square (NCI), Spencer Dock and The Point.
The line, which will be opened by Minister for Transport Noel Dempsey, will be free for commuters from 3pm this afternoon.
Normal passenger services will start tomorrow from 5.30am.