Ariz. Rev. Stat. § 28-7058
A. The department may:
1. Privatize any rest area constructed on or adjacent to state highways in this state on or after September 26, 2008. Any agreement between the department and a person for privatization under this section shall include a provision that:
B. For the purposes of this section:
2. "State certified rest area" means a privately owned facility that is both of the following:
(a) Certified by this state or a third party to meet the requirements established by the federal highway administration pursuant to Public Law 109-59, section 1310 and at a minimum offers all of the following: