It follows reports the projects could be delayed for a number of years.
The two projects were due to be up and running by 2027.
But construction on these may not begin until that date, according to the Mail on Sunday.
It highlights 2032 as a completion date for the Dart Plus extension, and 2034 at the earliest for MetroLink.
Pure Magic! 20 Years of Keeping Wicklow Uplands Clean
EU Defence Ministers Descend on Wicklow as Government Pledges €10m More for Ukraine
Old Recording Adds To Intense Concern About Road Safety
Wicklow Farmers Praised & Reminded About Vigilant Pesticide Use
Matchroom Tee Up Katie Finale With Astonishing Promo Video Narrated By Barry Keoghan