Ariz. Rev. Stat. § 36-1761
A. The director shall adopt rules that do all of the following:
1. Establish health and safety licensing standards for mobile food vendors and mobile food units that apply on a statewide basis. The licensing standards shall:
(b) Include general physical and operation requirements of a mobile food unit, including:
3. Establish a licensing process for mobile food units that does all of the following:
B. The rules adopted pursuant to this section may not do either of the following: