Eh? Stay off your precious roads? Sounds like you're just being greedy. The deer use it too.

It's not the smartest thing to do, but it makes for the easiest walking in some pretty remote locations.

Plus, they tend to ignore what a high-speed de-rail is like from 20 feet from the track. 

There's also a slight chance they may or may-not be retired hoboes.
-Not sure how they plan on loading themselves AND an deer onto a moving boxcar, but sure would be fun to watch.