Yeah, you could only use this after WROL had calmed down and there wasn't as much violence, or you knew a certain part of the tract was reasonably safe for travel, like between your camp and the new camp if ya'll were having commerce between the two. You had eggs, he has milk, whatever. And you have guys watching the tracks most of the time.
Way way way to easy to ambush or IED a train track.. insanely easy.