Drivers of vehicles proceeding in opposite directions shall pass each other to the right, and on roadways having width for not more than one line of traffic in each direction, each driver shall give to the other driver at least one-half of the main traveled portion of the roadway as nearly as possible.
A.R.S. § 28-722
Passing vehicles proceeding in opposite directions
Official source: Arizona State Legislature. Reproduced from public-domain Arizona statutes; confirm against the official source for the current text. Not legal advice.