Which of the following is NOT a main class of Commercial Driver’s Licenses?

Answer: C — Class D

The correct answer, Class D, is not classified as a main class of Commercial Driver’s Licenses. In the United States, including Michigan, Commercial Driver’s Licenses are categorized into three primary classes: Class A, Class B, and Class C. Class A is designated for operators of combination vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, which may include trailers over a certain weight. Class B covers single vehicles with a GVWR of 26,001 pounds or more, and may also include some buses. Class C is for smaller vehicles designed to transport passengers or hazardous materials that do not meet the criteria for Class A or Class B licenses. Class D, on the other hand, is typically associated with standard non-commercial driver's licenses used for regular passenger vehicles. It does not pertain to the operation of commercial vehicles, which is why it is not included in the main classes of Commercial Driver’s Licenses.