It comes amid growing calls for a dedicated public transport police.
Gardai are patrolling public transport this morning as part of an operation to tackle anti-social behaviour.
Operation Twin Tracks will see more officers patrolling the DART, Luas and eight intercity train routes, including Newbridge, Kildare Town, Monasterevin, and Athy
It’s only for one day though and comes amid growing calls for a dedicated public transport police.