"Excuse me, son." The driver smiled. "I seem to have gotten myself turned around here. Would you know the way to get to Highway Ninety?"

Thanks so much.
It means disoriented.

One might say to an employee in a large hotel with many corridors that lead many directions, "Excuse me, but could you help me find the Atlas Room? I seem to be turned around." The person in question may not literally need to turn around to reach his or her destination, but there is confusion about which direction to go.