I have confidently driven in three States in the US with my EU licenses. However, like in the EU there are these little quirky differences for which it is impossible to know it all. The only solution is to drive defensive.
I would love to be able to do a drivers test to see how much I actually know about traffic regulations and a result obtain a drivers license. It would not only prove that with a EU drivers license it is safe to drive in the US, it was also be an awesome souvenir.
Can I do such a test as a tourist?