It's probably not quite that bad, but if there's a single train anywhere on any single track section that means the entire section is effctively blocked off to

It's probably not quite that bad, but if there's a single train anywhere on any single track section that means the entire section is effctively blocked off to traffic in the other direction, it sounds like there's a lot more than a single freight train on it at any given time, and Amtrak wants to run round trips down the entire 138-mile track a couple of times a day.