Commercial Driver's License - Test Requirements

Test Requirements

Formal training is not mandatory to obtain a CDL. Although each state may add additional restrictions, there are national requirements in the United States . A prospective driver must pass a written test on highway safety and a test about different parts of a truck with a minimum of 30 questions on the test. To pass this knowledge tests student drivers must answer at least 80 percent of the questions correctly. To pass the driving skills test the student driver must successfully perform a set of required driving maneuvers. The driving skill test must be taken in a vehicle that the driver operates or expects to operate. For certain endorsements, such as Air Brakes, the driving skills test must be taken in a vehicle equipped with such equipment.