(excerpts from the Aizona DOT)
If you are at least 15 years and 6 months of age you may be issued a graduated and/or a motorcycle instruction permit. You must be at least 18 for an operator permit.
With a graduated or operator permit you must be accompanied by a class A, B, C or D licensed driver, who is at least 21 years of age and occupies the seat beside you. These permits are valid for 12 months.
With a motorcycle permit you are prohibited from operating a motorcycle on freeways or interstate highways or between sunset and sunrise, or at any time when there is not enough light to clearly see persons or vehicles at a distance of 500 feet. The motorcycle instruction permit is valid for 7 months and can be renewed one time within a 24-month period.
The commercial instruction permit is valid for a 6-month period. You must be at least 18 to apply. For additional information, see the Commercial Driver License Manual, available by calling the Customer Service Call Center.
Graduated License (Class G)
A graduated driver license is issued to an applicant who is at least 16, but less than 18 years of age and is valid to operate any vehicle that does not require a motorcycle or commercial license.
An applicant for a graduated license must have held an Arizona instruction permit for at least 6 months. The permit must be valid at the time of application. An applicant must also have satisfactorily completed an Arizona driver education program approved by MVD or the parent or guardian must certify in writing that the applicant has completed at least 30 hours of supervised driving practice, including at least 10 hours at night.
The following restrictions apply to a class G license for the first six months the license is held.
An applicant holding an out-of-state driver license is exempt from the driver education/driving practice and instruction permit requirements. The applicant will be required to follow the restrictions stated above for the first six months that they hold their original class G license.
The holder of a graduated license is not required to obtain an operator license at age 18, but may choose to obtain one.