The Government has published its €24bn plan for roads, rail, aviation, maritime and active travel projects it intends to begin over the next four years.
Under the National Development Plan, the public transport projects that are being prioritised are Phase 1 of the Cork Area Commuter Rail programme, construction of DART in Dublin, and the replacement of the existing DART fleet.
Construction will also get under way on the Western Rail Corridor link from Athenry to Claremorris.
The massive MetroLink project in north Dublin is also included.
More electric buses will be purchased and there will be construction of multiple Core Bus Corridors in the capital with construction expected in Cork and Galway too.
Over €10bn will spent on public transport under the plan.
Some €9.7bn will be invested in renewing the road network, delivering new national and regional roads and bypasses, and investing in the EV charging network.
Major roads projects that are expected to begin construction by 2030 include the Slane Bypass, Galway City Ring Road, the N17 Knock to Collooney road in Co Sligo, the M20 Cork to Limerick and the upgraded Limerick to Foynes road including the Adare Bypass.
Smaller projects that will begin construction include the Mallow Relief Road, Ardee Bypass, N3 Clonee to the M50 road and the Foxford Transport Project.
€1.8bn will be invested in active travel and greenways to deliver 1000km of new and upgraded walking and cycle infrastructure by 2030.
€44.6m will be invested in regional airports and €145m will be invested in an Irish Coast Guard building programme and the replacement of the Irish Lights vessel ILV Granuaile.
A decision on the Galway ring road by An Coimisiún Pleanála is expected in "a couple of months", according to Minister of State at the Department of Transport Seán Canney.
Minister Canney said he does not think the appeal will go to an oral hearing, as there were relatively few submissions at this stage of the project.
On the Western Rail Corridor, Minister Canney said that construction was expected to begin on site in 2028.
He said that enabling works and fencing can be done in the meantime, and said the fact that planning permission was not required, would help with delivery of the project.
Read the plan in full here