So, why do you need a book. The signs tell you as does looking out the window. If it is a main road or interstate and can handle a truck, it can handle a coach. It is the driver and sadly, many are not up to regular driving at times, much less mountains. Heck, I was talking to one motorhome driver who thought I 40 in NC was too steep and she was scared. I have driven my coaches in rain, snow, heat and cold and up and down just about every major highway in America. Gear down going up and down. Watch your temps, don't ride the brake and use your aux braking. And the big thing is to start out slow at the top in a lower gear and stay there. Took 14 out of Yellowstone and I 70 thru Denver and I68 in western Md and do it in 2 or 3rd gear with my retarder and never have yo touch the brake almost all the way down.