All drivers of Commercial Motor Vehicles (CMVs) in the United States must possess a Commercial Driver’s License (CDL). To acquire this specialized license, you must first pass a series of written knowledge tests and earn your Commercial Learner’s Permit (CLP). The tests are designed to determine if you possess the knowledge to safely operate a commercial vehicle. You will have to take one or more knowledge tests, depending on what class of license and what endorsements you need.
