Train and bus services will be operating on a reduced schedule from next week, it has been announced.
The National Transport Authority says Irish Rail, Dublin Bus, Go-Ahead Ireland and Bus Éireann services will be running on revised schedules as a result of the coronavirus crisis.
There will be no changes to Luas services for now.
Transport authorities say passenger numbers on public transport are generally down around 80%, but there are concerns about social distancing on some busier services.
They say the new timetable will free up resources so extra vehicles can be set aside for services where there is greater demand.
The new Irish Rail timetables come into effect from Monday, while the changes to bus services will be in place from Wednesday.
All details will be available on the websites of the individual operators.
Go Ahead services will operate at 94% of current levels, while Dublin Bus and Bus Éireann will be operating at over 80% of current levels.
Intercity and commuter train services will run at 45-55% of normal levels.
Meanwhile, DART services will run every 15 minutes at peak and every 30 minutes at other times.
Transport Minister Shane Ross said: “I would like to acknowledge the work being done by our transport operators and their staff in these difficult times and for responding to the challenges by putting these new schedules in place.
“I’d like to thank all those who are providing these essential services so that people who rely on public transport, working in hospitals, pharmacies, the grocery sector, and other vital areas, can continue to get to where they are needed to the benefit of us all.”
The NTA added that the changes are designed to ensure public transport services “remain frequent and reliable” during the weeks ahead.