Driver's License Classes

What are the different Driver's License classes?

Class A: You may drive any vehicle with a Class A, B, C, or D requirement.
Class B: You may drive any vehicle with a Class B, C, or D requirement.
Class C: You may drive any vehicle with a Class C or D requirement.
Class D: You may drive any vehicle with a Class D requirement.
Class X:  You may not drive any vehicle with this Class requirement.

Everyone will start with a Class D License and will be able to apply for a Class A/B license. For all Class A applicants