The long-awaited Dart extension and MetroLink projects are set to be delayed again.
The two projects were due to be up and running by 2027, with the Dart Plus projects extending the line from Dublin City Centre out to the M3 Parkway near Dunboyne.
However, construction on these may not begin until that date, according to reports that emerged yesterday.
It highlights 2032 as a completion date for the Dart Plus extension, and 2034 at the earliest for MetroLink.
Details of the delays were revealed at a Cabinet meeting in July.