If you kept the drive axle on the road, in that curve, a coach will go up there.
This attention seeker let the trailer go off the edge, I think, maybe, cuz like the rest, I'm not wasting anymore time looking at this manufactured $h|t.
Newbies: you are driving the drive axle, the front goes wherever it has to, to get the rear EXACTLY where you want it. Many get those two reversed...
happy coaching!
buswarrior