Kerry people travelling by train to Dublin Heuston this weekend are being advised of some disruption along the route.
Track works are taking place between Hazelhatch and Newbridge, and between Clongriffin and Malahide.
Bus transfers will operate from Heuston to Newbridge on Saturday and Sunday to accommodate people travelling from Kerry, Cork and Limerick.
The Bank Holiday Monday is not affected.
Full details of all services across the May weekend are at www.irishrail.ie.