CDL · Doubles and triples
Pulling a set of doubles, you have to brake hard to keep from hitting something. Which braking method should you use?
Correct answer: Applying controlled braking or stab braking.
Answer options
- ABraking with only the trailer brakes.
- BApplying controlled braking or stab braking. Correct
- CStomping on the pedal with full force and keeping it pinned down.
Why
Controlled or stab braking slows the rig while keeping it straight and letting you steer. Holding the pedal to the floor locks the wheels and invites a skid or jackknife, and using only the trailer brakes can make the trailers skid.
About this question
Topic: Doubles and triples License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
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This question is part of Pulling Doubles and Triples (24 questions). Take the full set and check your score.
Practice Pulling Doubles and TriplesMore questions from Pulling Doubles and Triples
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- Your 100-foot double-trailer rig is traveling 50 mph on a dry road and visibility is good. What is the smallest following gap, in seconds, you should leave behind the vehicle ahead?
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