Most of the time, when a person under the age of 21 commits an alcohol related violation, DMV will revoke the driver’s license.
Like an adult, persons under age 21 can be convicted of DWI. There are additional laws for this age group.
If you are less than 21 years old and you are convicted of driving with any alcohol or controlled substance in your body, your license may be revoked for one year. You may be eligible for a limited driving privilege if you were 18,19, or 20 at the time of the offense. (20-138.3) and have not previously been convicted of this offense.
If you are under age 21 and you possess, attempt to possess or purchase, consume alcoholic beverages, or use/allow someone to use your ID/attempt to use a fake ID or another’s person’s ID to obtain/attempt to obtain alcoholic beverages, your license will be revoked for one year. No limited driving privilege allowed. 20-17.3. 18B-302b(1)(2)(3) and(f)
If you aid and abet (help) another person to violate a law relating to underage possession, purchasing of alcohol or related crimes, your license can be revoked for one year. You may be eligible for a limited driving privilege. 18B-302c, 20-17.3
If you give an alcoholic beverage to an underage person, your license will be revoked for one year. You may be eligible for a limited driving privilege. 18B-302(a1), 20-17.3