CDL · Air brakes
Which of the following correctly describes air brakes?
Correct answer: They do a good job of stopping big, heavy vehicles.
Answer options
- AThey are meant for use on wet roads only
- BThey do a good job of stopping big, heavy vehicles Correct
- CThey are not allowed on large trucks or buses
Why
Air brakes work with compressed air and provide the strong stopping power that big trucks and buses need. They are standard equipment on many heavy vehicles and are used on every kind of road surface, not only wet ones.
About this question
Topic: Air brakes License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of How Air Brakes Work (18 questions). Take the full set and check your score.
Practice How Air Brakes WorkMore questions from How Air Brakes Work
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- Your air brake system's safety relief valve starts letting air escape. What does this tell you?
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