[bastawhiz]

What happens when late freight makes Amtrak late? You can't just make a freight train evaporate from the track because Amtrak has priority.

[nopenopenopeno]

You can make the freight train wait at the merge. It's not rocket science.

[bastawhiz]

Freight trains can be very long. If it's already occupying the track, it's too late to make it wait.