Texas CDL study: Air Brakes questions
46 questions from the TX CDL path, each with an explanation after you answer. Part of the Texas CDL Air Brakes practice test.
Passing removes the air brake restriction rather than adding an endorsement. The pass mark is the federal 80%, and most states do not publish a question count for it. Questions cover the components of an air brake system (compressor, governor, reservoirs, brake chambers, slack adjusters), how to inspect air brakes, the proper procedure for testing low-pressure warning devices, the brake lag distance unique to air brakes, and emergency and parking brake systems. You will also be tested on the air brake inspection portion of the CDL pre-trip test.