Kansas Air Brakes Practice Test 2
30 questions covering air brakes content, drawn from the FMCSA-aligned CDL question pool and the Kansas Commercial Driver's License Manual.
What this test covers
The air brakes knowledge test typically has 25 multiple-choice questions, and you need at least 80% to pass. 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.
Sample Air Brakes questions
Preview of what is on Practice Test 2. Unlock with Pro to take the full 30-question test.
What is the primary purpose of the air compressor in an air brake system?
What is the function of the governor in an air brake system?
At approximately what PSI does the governor normally cut out (stop the compressor from pumping)?