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Air Brakes
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CDL Practice Test
General Knowledge
Air Brakes
Combination Vehicles
Doubles and Triples
Tanker Vehicles
Hazardous Materials
Transporting Passengers
CDL Air Brakes Practice Test
Question 1 of 3
For vehicles that use air brakes, emergency and parking brakes:
A
Must be mechanical brakes
B
Are not required
C
Can only be air brakes
D
Must be a combination of mechanical and air brakes
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