It comes as a recent Garda operation found incidents of drunkenness, robbery and drug use at train stations across the country.
Two incidents of drunkenness, one robbery, and one incident of anti-social behaviour was detected by gardaí at train stations in Dublin and Tipperary as part of Operation Twin Track - that took place last month.
While two people were found to be in possession of drugs at Longford Town Railway station.
The National Bus and Rail Union are among those to call for the implementation of a designated Garda transport unit to tackle antisocial behavior.
A 26-year-old man was left with serious facial injuries after a homophobic attack on a Dublin Bus at the weekend.
The Garda Representative Association says more serious assaults are happening, and less Gardaí are available.