People travelling by train to and in Dublin, this weekend are being urged to start planning their journey now.
The warning from Iarnród Éireann comes ahead of a busy weekend full of events.
The Bray Air Display, Celtic vs. Wolves in the Aviva and the All-Ireland Football Final in Croke Park all happen between Saturday and Sunday.
The DART is expected to be the busiest, but extra trains are being added.
Irish Rail has issued this advice:
- Travel early and allow extra time.
- Bray Air Display commuters: Start your journey by 11 am due to busy southbound services.
- If you aren't attending major events - try to sort your travel around event times.
- Take water and stay hydrated - alcohol is not allowed on trains.
- Follow the advice from staff and Gardaí.
- Bikes will not be allowed on DART and Commuter Services.
Sunday morning services for the All-Ireland Final are already sold out.