Gardaí will be based at railway stations for the first time from today.

A new garda transport hub will open at Heuston Station, and a similar centre is expected to be opened at Connolly Station.

Gardaí will have oversight of all public transport networks, including trains, buses and trams.

National Bus and Rail Workers Union General Secretary Dermot O'Leary says security for public transport workers and users is welcome..