Will be flying into Phoenix Sky Harbor at 11:00 pm, renting a car, driving to hotel near airport. Next day maybe driving to Heard Museum and then heading for the Apache trail. Oh, and then a week later, will be driving back to the airport from Tucson. So how is driving in Phoenix? Is signage good for out-of-town drivers trying to find their way? When is the traffic worst? Any roads to avoid? How crazy are the drivers? I've driven in Boston, New York, and Orlando, but a big city in the Southwest is entirely new to me. Clue me in and I promise not to drive like a gawking tourist!