Well it’s high speed, not conventional railing....aren’t those top and side of the rail wheels which, as long as the gauge is precisely maintained, could not “jump” the rail. Hence a 2” width increase in one linkage (and maybe on a curve) section or the attachment of a continuous rail-— would result in a catastrophic derailment. Wonder what the section speed is in that area of track.
Not as a pro— but had several old kin who worked/drove for Burlington and the Burlington Northern.
I have written a bit of a geekfest reply to your post, if you wish to suffer it I’ll FReepmail it to you.