A bus driver must have commercial driver's license with the passenger endorsement if he/she drives the vehicle designed to seat more than 15 passengers, including the driver.To get the endorsement all applicants required to pass written general knowledge test and transporting passengers test. (If your bus has air brakes, you must pass air brakes test.) This course is intended to help you be more successful on a real CDL written test. The information on this course has organized layout included, so you do not have to figure out the approach to learning material on your own. This has already been done for you, so relax; learning doesn't have to be painful! What you get: General knowledge test Transporting passengers testAir brakes test Each Test consist of set of necessary questions with right answers broken up into three smart practice tests that makes the study of material as easy as 1,2,3. With minimum effort and no frustration you'll be ready to pass a real CDL test in just a few days when use CDL Test Dynamic Prep as your study guide.The book is good for all 50 states.