A Commercial Driving License (CDL) is a special license required to operate large vehicles, such as trucks and buses, for commercial purposes. It ensures that drivers have the necessary skills and knowledge to safely handle these vehicles on public roads. Obtaining a CDL typically involves passing written and driving tests, as well as meeting specific health and age requirements. There are different classes of CDLs, each allowing drivers to operate various types of vehicles. For example, a Class A CDL permits driving combination vehicles, while a Class B CDL is for single vehicles over a certain weight. Proper training and adherence to regulations are essential for maintaining safety in commercial driving.