Train drivers had 32 near misses last year to avoid hitting or killing a person on the tracks.
Iarnród Éireann has urged people to be more aware of their surrounding and to put an end to track trespass.
Irish Rail has released shocking new CCTV footage from Kilbarrack station which shows how one man avoided being killed by a split second, as the Dublin to Belfast Enterprise speeds past at 140 kilometres per hour.
Other clips from the busy DART station show trespassers crossing the track with bikes, and even a toddler being carried across in a stroller.
Irish Rail is warning people that modern tracks and trains are a lot more silent and customers may not be aware they are approaching.
Train drivers also reported over 200 trespass incidents during 2016.