Missouri CDL Practice Test: Air Brakes - Test 2021
|Number of questions: 30|
|Passing score: 80%|
|Acceptable number of errors: 6|
Instruction: To obtain this endorsement required to drive a vehicle with air brakes, applicants must pass a 20-question test. And to pass the test, applicants must score at least 80%. Test questions are from the Missouri Commercial Driver Handbook. The School Bus endorsement can be used with the Class A, B, or C CDL. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Missouri DMV locations.