I am not sure if this is a bug or just sloppy driving. On the Cajon Pass route, in the scenario "Held Up By The Highwayman" I never get too far without the trailers on the first 3 cars tipping over. I hit the first bend going down the hill and boom!! The trailers fall right off into an oncoming train. No matter how slow I take the corner I can't get past that point. Even if I get past that point, they end up falling off farther down the line on an even lesser bend. The speed limit in said bend is 35 mph and I have gone through at 10 mph and it still falls off. I realize that these are probably unsteady loads to begin with, but if they were that unsteady and unsafe, I doubt that they would be carried in that manner.