When ever I have inquired, they tell me the whole perimeter has to be posted. Mainly because the trespassesrs could claim they come in from another area and never saw them.
Besides that, they have even tried to get me to be responsible for posting in places where the public comes in at raodways, even though I do not own that property. I think they are just trying to "pass the buck" and I don't follow that advice. I have a power line that cuts thru the property and with this type of easement, like your RR tracks, it seems to give people the idea its ok to follow the pathway and trespass.
