Driver's license
The minimum driving age varies between 16 and 18 years of age in different States and Territories. After the minimum age, a graduated licensing scheme operates, with state variations.
Driver's licenses in the United States
Driving a school bus also requires a CDL, however the minimum age to drive a school bus is typically higher, usually 25. Some states issue "restricted intrastate commercial driver's licenses", valid for operating commercial vehicles in that state only, to drivers aged 18 and older. Professional drivers who are aged 18–20 typically cannot be licensed to drive tractor trailers, hazardous materials, or school buses.