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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
A dual air brake system is one in which:
A
Two brake systems use the same set of brake controls
B
Two brake systems that each have their own set of controls
C
Two control systems that each have their own set of breaks
D
Two sets of brake controls operate a single brake system
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