The general knowledge section of the commercial driver's license exam includes a thorough assessment of your driving skills. The test will cover everything from how to accelerate to the importance of staying alert behind the wheel. In this program, we'll talk about the basic vehicle control portion of the exam. Before you take the CDL exam, make sure you've thoroughly studied your state's CDL manual – particularly the sections on driving safety. We'll cover the basics here, which should help build a solid foundation, as you begin your studying.