Kildare, Newbridge, Monasterevin and Athy are included as part of the operation.
There will be an increased presence of gardaí and security on public transport today.
It's part of an operation to clamp down on anti-social behaviour.
There are ongoing concerns about how safe people feel on public transport.
Gardaí and security from the Luas and DART will have an increased presence across eight intercity routes, including Kildare, Newbridge, Monasterevin and Athy in an operation called Operation Twin Tracks.
Extra gardaí will also be in Pearse Street, Connolly and Heuston Stations.
More officers will also be in place on eight intercity train routes nationwide including services from Mayo, Galway, Sligo, Kildare, Wicklow and Cork.
They say they will engage with commuters and provide guidance on crime prevention.