CDL - Complete Practice Test Study Package Practice Tests

Free CDL - Section 5 - Air Brakes Sample Practice Test

You are about to take the CDL - Section 5 - Air Brakes. This sample test consists of 10 multiple choice questions and answers.

Please select the best answer for each question below and then click "Grade It!"

1.
What is the controlled braking method?
2.
When the tank pressure falls to the "cut-in" pressure, the governor allows the compressor to start pumping again. What is the "cut-in" level?
3.
What does the air compressor do?
4.
When the spring brakes are on, what should you not do?
5.
A dual air brake system has two separate air brake systems which use a single set of brake controls. True or False?
6.
What are the maximum leakage rates?
7.
Compressed air usually has some water and some compressor oil in it which is bad for the air brake system. Why is it bad for the air brake system?
8.
Tractor and straight truck spring brakes will come on when the air pressure drops to what range?
9.
What does the air compressor governor do?
10.
When air tank pressure rises to the "cut-out" level, the governor stops the compressor from pumping air. What level is the "cut-out" level?

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About the CDL Driving Test

The Federal Commercial Motor Vehicle Safety Act of 1986 set minimum standards for a Commercial Drivers License in order to reduce accidents involving commercial motor vehicles. To comply with the ... (read more)

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