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.
Learner's permit
In many states the period of driving on a learner's permit is shortened if the applicant is above the age of eighteen. For example, in Oklahoma if a driver is 18 or older a learner's permit must only be held for one month before the driver qualifies for an intermediate license. Some states allow drivers over the age of twenty-one to bypass the entire graduated licensing process. For example, in Colorado, a driver over the age of twenty-one may apply for and pass the tests for a permit and a full driver's license on the same day and, if successful in passing the tests, may obtain a full driver's license as soon as the driver passes a scheduled driving test.