Arizona property owners, tenants, businesses, and employers may ban guns from their parking lots that: Are secured by a fence or physical barrier; Limit access by a security measure, such as a guard; and Provide temporary and secure gun storage that is readily accessible upon entry and exit. Alternatively, a separate parking lot can be provided for vehicles with firearms as long as it is not far and does not require an extra parking fee. Otherwise, firearms are usually allowed in parking lots as long as they are not visible from the outside of the vehicle, and the vehicle is locked.