What is the minimum age required to obtain a CDL for intrastate driving in Michigan?

Answer: B — 18 years old

In Michigan, the minimum age required to obtain a Commercial Driver's License (CDL) for intrastate driving is 18 years old. This regulation allows individuals who are at least 18 to operate commercial motor vehicles within the state boundaries. It is important to note that while you can obtain a CDL at 18 for intrastate purposes, the age requirement for interstate driving—driving across state lines—raises to 21. This distinction reflects a regulatory framework designed to ensure that younger drivers gain experience and meet certain standards before operating commercial vehicles in more complex interstate conditions. Therefore, the correct answer highlights the state's requirement for intrastate driving, emphasizing the developmental stages and safety considerations involved in operating commercial vehicles at a younger age.