Then you call up a driving school and say you’re just back from Australia, or South Africa, or England. You used to have a U.S. driver’s license, you explain, but now that you’ve been driving on the other side of the road for a while, you need a refresher to make sure you’re comfortable back on the right side before you take your driver’s test. After a couple of "lessons," the instructor will tell you you’re ready, and the school will lend you a car to take your test in .