A person shall not turn a vehicle to proceed in the opposite direction on a curve or on the approach to or near the crest of a grade if the vehicle cannot be seen by the driver of any other vehicle approaching from either direction within five hundred feet.
A.R.S. § 28-752
Limitations on turning around
Official source: Arizona State Legislature. Reproduced from public-domain Arizona statutes; confirm against the official source for the current text. Not legal advice.