Only solution to this:

1) Entire Railway track needed to be fenced/walled to prevent unauthorised entry in railway tracks

2) All railway level crossings must be converted either subways or underpasses. Example :...
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In Chennai Palavanthangal (connecting GST road with that opposite arra of track) and Chrompet Railway crossings(near Saravana Stores and near Railway station)must be closed immediately and to be converted as either subways or underpasses.

3)Need of pedestrian crossings like in roads for walkers either above or below the track, if applicable.

3)RPF should be there even at less dense/halt like stations

4) CCTV cameras with long covering range can be fixed when tracks are in unpopulated areas like crossing forest area/uninhabited area etc to identify and detect malicious activities apart from major populated areas.

5)Except at emergencies like Train accident/Fire in train/finding cracks or malicious objects in railways tracks, no other purpose no public should not enter railway tracks for the purpose of loitering or celebrating any birthday party, taking reels in Instagram etc and also those whom are pelting stones/using flammable objects/or creating fear among public by threatening others must be punished with 3-5 years rigorous prison with non bailable jail sentence.