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CDL Practice Test | Air Brakes

Practice Test Question #1 of 16

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Which best describes what a dual air brake system is?


Dual air brake systems have two separate air brake systems which use a single set of brake controls

Dual air brake systems have two separate air brake systems, the first system is called the primary system. The other is called the secondary system.

Dual air brake systems have two separate air brake systems, each system has its own air tanks, hoses, lines, etc

Dual air brake systems have two separate air brake systems, both systems supply air to the trailer if there is one.

All of the above

None of the above







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