Looking to sharpen your skills before driving a bus, semi or large truck in Maryland? The Maryland Commercial Drivers License (CDL) Handbook provides drivers with essential safety tips and strategies when operating these types of vehicles. With a larger vehicle comes a greater responsibility. Luckily, the MD CDL manual breaks down these operating procedures into easy-to-follow steps. Pick up your copy to make sure you're prepared to pass the tests to earn your CDL license in Maryland.