as said a person would never derail a train
you have a minimum 30ton carrage [unless its a pacer] shared over 4 axles
so you have around 4 tons per wheel minimum which is enough to resist the problems off human flesh

you have a minimum 30ton carrage [unless its a pacer] shared over 4 axles
so you have around 4 tons per wheel minimum which is enough to resist the problems off human flesh
