Thanks for the comment, but my point is exactly that: don't try to ride or non-abandoned tracks! Even on the abandoned ones there may be some maintenance traffic. However, checking in with the people in charge of the tracks can give you all the info where you won't encounter ANY rail vehicles.
Of course, there's no comparison with Asia. North America, including Mexico, is known for its wasted infrastructure, with a whole network of rails without a single train, ever, any more.