Arizona lacks the exception to the ride-on-the-right rule that allows cyclists to ride on the left side of one-way streets.
According to BicycleDriving.com’s Guide to Improving Laws , only 4 states (AZ, SD, TN, UT) lack this exception.
Arizona’s ride-on-the-right rule is §28-815. Arizona has the other usual exceptions: normal speed of traffic; overtaking; left turn; hazardous road conditions; and lane too narrow.