A person shall not operate a foreign vehicle owned by a nonresident on a highway and a nonresident owner shall not knowingly permit the foreign vehicle to be operated on a highway unless there is displayed on the vehicle the license plates assigned to the vehicle for the current registration year by the state or country of which the owner is a resident.
A.R.S. § 28-2322
License plate requirement for nonresident's foreign vehicle
Official source: Arizona State Legislature. Reproduced from public-domain Arizona statutes; confirm against the official source for the current text. Not legal advice.