Ariz. Rev. Stat. § 12-556
A. A person who operates a closed-course motor sport facility may require a nongeneral spectator to sign a motor sport liability release form as a condition of admission into any nongeneral spectator area of the facility. A person or entity that owns, leases or operates a closed-course motor sport facility or that sponsors the motor sport event is not liable for an injury to or the death of a nongeneral spectator, unless the injury or death is a direct result of intentional misconduct or gross negligence, if the nongeneral spectator both:
C. For the purposes of this section:
4. "Nongeneral spectator area" means a posted area within a closed-course motor sport facility to which all of the following apply:
5. "Posted" means a nongeneral spectator area: