What is CDL? A Commercial Driver’s License (CDL) is a specialized license that allows individuals to operate large, heavy, or hazardous vehicles such as tractor-trailers, buses, or tankers. To earn a CDL, applicants must pass written knowledge exams and a skills test that includes vehicle inspection, basic control, and on-road driving. CDL training programs prepare students for both the knowledge portion and the hands-on driving test. They also teach safety standards, federal regulations, and endorsements like Hazmat or passenger transport. Choosing the right training method is critical, and today’s drivers can pick between......