Others you forgot: if you can help it, don't drive after dark... or when other people are out. I spent more time avoiding other cars than avoiding ice last night... thankfully I was going the opposite direction from most people.

And if you have manual transmission, starting off in second gear can help with traction. I guess Low would work for automatic -- I've never owned one of those.

As far as windows fogging, it also helps if you either turn on your A.C. or blow outside air instead of recycled air -- or both. A lot of that fog is the humidity from your breath, so you need to get dry air into the passenger compartment.