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Question
Pressing and releasing the brake pedal unnecessarily can:
Answers
A.  Release air faster than it can be replaced.
B.  Add more air to a brake system.
C.  Make the brake pedal harder to depress.
D.  Create a loud noise.
Explanation
On a vehicle with air brakes, pressing and releasing the brake pedal unnecessarily may let air out of the braking system faster than the compressor can replace it. This may cause the system's air pressure to become too low and the brakes to stop working.
Answer Statistics
8.67 % of our users get this question wrong.
This question's difficulty is Medium

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