Illinois CDL Practice Exam 2026 - Free CDL Practice Questions and Study Guide

The minimum age for obtaining a Class A CDL is 21 years old. This age requirement is in place because driving a commercial vehicle across state lines or transporting hazardous materials involves a higher level of responsibility and risk. The federal regulations set by the Federal Motor Carrier Safety Administration (FMCSA) establish this age limit to ensure that drivers have adequate maturity and experience before operating large vehicles that can impact not only their safety but also the safety of others on the road.

In addition to the age requirement, applicants must also meet other criteria, such as holding a valid driver's license and passing various knowledge and skills tests. This stringent approach helps maintain safety standards within the trucking industry and ensures that only qualified individuals are allowed to drive large commercial vehicles.