Hundreds of thousands of people are expected to travel through airports, ports, and by rail and road this holiday weekend, one of the busiest of the year.
With over 200,000 intercity journeys expected to be made on Iarnród Éireann, a special timetable is in operation.
A spokesman for Iarnród Éireann said the busiest day across the country would be Monday, when extra trains would be provided on all main routes. Today and tomorrow there will be some changes to timetables but it would be less busy, he said.
Full details are available in stations, online at www.irishrail.ie and on 1850 366222.
Iarnród Éireann also reminded passengers that work on the replacement of the East Wall Road Bridge got under way this weekend. To facilitate the work, the rail line between Connolly Station and Clontarf Road closed at 11 a.m. yesterday and will reopen at 4.30 p.m. on Easter Monday.
A shuttle bus is operating between Clontarf Road and Tara Street. Normal DART services will operate between Connolly and Bray/Greystones, with Easter Monday operating to a Sunday timetable.
Bus Éireann is expecting to carry 100,000 passengers over the long weekend. Today a normal Saturday service will operate in all areas.
Tomorrow there will be a normal Sunday service but there will be some local cancellations and alterations. Monday will operate a Sunday schedule with some alterations and some extra services.
Dublin Bus will run a normal schedule today while tomorrow's usual schedule has been boosted by a full Nitelink service. Buses will run to a Sunday schedule on Monday.
More than 310,000 people are expected to pass through Dublin, Cork and Shannon airports.
Stena Line expected to take 44,000 people and 9,000 cars in and out of Ireland. Irish Ferries expected their Dublin and Rosslare to Britain routes to carry about 37,000 passengers and 7,100 cars, and their Rosslare to France route about 4,700 passengers and 1,100 vehicles.
Certain events could lead to traffic congestion, AA Roadwatch has warned. Delays are expected around the Fairyhouse Racecourse as the annual festival resumes after a gap last year due to foot-and-mouth.
Parking is available in the racecourse grounds. The meeting will take place from tomorrow until Wednesday.
Race meetings will take place in Cork today between 2 p.m. and 5 p.m., tomorrow between 2.15 p.m. and 5.15 p.m. and on Monday between 2 p.m. and 5.10 p.m. Extra traffic is expected on all approach roads before and after each race, particularly on Monday evening when return journeys will be under way after Easter.
Yesterday, five- to six-mile tailbacks were reported on the N4 at Enfield heading west. There was also a two- to three-mile tailback on N3 northbound at Dunshaughlin, with a 15-minute hold-up.
In its Easter road safety campaign, the National Safety Council has stressed the need for drivers to take regular breaks to prevent fatigue.