Its reported an increase in such behaviour on trains since the beginning of the pandemic.
Irish Rail is to introduce on the spot fines to those engaged in anti-social behaviour on its trains.
It has reported an increase in verbal abuse, drinking, abusive behaviour, and vandalism since the beginning of the pandemic.
Traditionally, it has only been able to prosecute people through the courts system.
It is now up-skilling some of its staff to issue fines, in certain circumstances.
Company spokesperson Jane Cregan has been speaking to Kildare Today.
Jane Cregan joined Eoin Beatty on Thursday's edition of the programme.

Kildare Senior Hurling Team vs Galway
Missing Naas Woman Deborah Doyle Located "Safe And Well"
Kildare SF Team (one late change) vs Wexford
Average Price Of Three-Bed Semi-Detached Homes In Kildare Now Cost €400,000
Council Says Reopening Celbridge Abbey Car Park Would Hit Parking Budget
Where To Recycle Your Christmas Tree In Kildare From Next Week
Over 9,000 Tusla Referrals Linked To Poor School Attendance Were Made Last Year
Homelessness Figures Reach Another Record High, With Numbers Also Increasing In Kildare