A number of Irish Rail services are experiencing delays on Friday morning due to an earlier “major” signal fault. Services were suspended for a short time but are now operating again, though passengers have been warned of “significant delays” and alterations to routes.[ Significant Dart closures for rail works to disrupt bank holiday travel in DublinOpens in new window ]Irish Rail says the services currently experiencing delays are: the Dart (45 minutes), the Northern commuter line (37 minutes), the Phoenix Park tunnel (40 minutes), Rosslare (30 minutes) and Sligo line (34 minutes).