I only drove about 24 hours even though it asked for 50. Just take a practice test online for the written part and don't drive like an ass with the instructor and you should be fine. I got stopped early on my written test because I couldn't have failed if I missed the rest of the questions. The only question I don't think I got wrong would be this one about a truck with a trailer and it asks how long it would take the truck to stop from 55mph.