Even driving a taxi-cab demands a commercial driving license endorsement! The chances are that you will need to sit more tests than just the CDL general knowledge NY permit test and if you aim to drive anything larger than a standard car, the DMC CDL air brakes test will be one of them! The NY CDL practice test air brakes quiz you have found on this page is by far the most widely utilized DMV endorsement test learning aid, as every Class A and Class B commercial vehicle must be fitted with air brakes by law. Do you know which commercial drivers license endorsements you will need for your chosen line of work? Most CDL permit applicants from Buffalo, Rochester, Albany and New York City require at least one license add-on to specify what kind of work they can do as a commercial driver.