CDL · CDL general knowledge
Retarders on large trucks and buses are useful because they:
Correct answer: All of these are correct.
Answer options
- Ahelp bring the vehicle's speed down
- Blessen the need to use the service brakes
- CAll of these are correct Correct
Why
A retarder adds slowing force without the service brakes, so you apply those brakes less often, which keeps them cooler and cuts down on wear.
About this question
Topic: CDL general knowledge License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
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This question is part of Steering, Shifting and Backing (29 questions). Take the full set and check your score.
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