When you get on steep grades, there are some things you should consider.
1. If you're on a two lane highway, don't speed up when you get to a passing lane. Stay to the right, and let traffic get around you.
2. If you're on a two lane highway, and you have traffic backed up, use turn outs every chance you get. This will let traffic clear out behind you.
3. On steep downgrades, make sure you use your transmission to keep your speed under control instead of your brakes.
4. If it's very hot out and you're climbing a steep grade, shut off your TV AC to help with power demands and to prevent overheating.\
5. On some steep grades, there is a brake check area at the top of the grade. If you have any doubts about your rig, pull over there and check to make sure your brake controller is properly set.
6. If your brakes start to fade on a steep grade, make sure you have a hot iron to get the pucker marks out of your seat. ;-)