Arizona Roads + Highways

One of Arizona's most dangerous roads twists and turns through the Superstition Mountains. Are you brave enough to give it a try?

If you're traveling Arizona's I-19 between Tucson to Nogales, Mexico, you may be confused about seeing the road signs in metric.

While you might think police officer uniforms look nearly identical in every state, the cars they drive couldn't be more different from one another.

Have you seen any of these drivers on the road? They can change their plates, but I'll be we can guess where you're from by the way you drive.

READ: Have you ever flashed your high beams at an oncoming driver to warn of danger on the road or a speed trap? Is this legal in Arizona? The answer will surprise you.

If you've ever wondered what those random black lines are on the road, learn what they are and why they're there.