The Government's new rail strategy aims to get the Galway to Dublin journey down to 90 minutes.
The new strategy will see additional platforms and routes introduced over the next five years.
The Rail Project Prioritisation Strategy follows a review of the rail network last year.
Today’s publication outlines plans for new platforms at Limerick Junction, along the Galway and Sligo lines and North of Dublin’s Connolly station.
There will also be some major new developments including reinstating the train line in Donegal and speeding up key routes to and from Dublin.
Government hopes to get the train journey from Dublin to Cork down to under an hour and 45 minutes, from Dublin to Belfast down under an hour and 40 minutes and from Dublin to Galway in an hour and a half.
