South Dakota cdl Air Brakes - Test 1
Number of questions: 25
Passing score: 80%
Acceptable number of errors: 5
This endorsement is required for driving a vehicle with air brakes. To receive this endorsement, applicants must pass a written test. The test consists of 25 multiple choice questions. Each question has three or four answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the South Dakota Commercial Driver License Manual. Questions come from the chapter covering: Air Brakes. The Air Brakes endorsement may be used with the Class A, B or C CDL.
To DMV Handbooks8. If your tractor is equipped with ABS but your trailer is not, the ABS:
A
×
Will not be effective.
B
√
Will still improve your steering control.
C
×
Will make jackknifing easier.
D
×
Will allow others to see when you brake.