CDL · Doubles and triples
While you are pulling doubles, the wheels of one trailer lock up and start to skid. What is the most likely result?
Correct answer: That trailer is likely to swing out and jackknife.
Answer options
- AThat trailer is likely to swing out and jackknife. Correct
- BThe whole rig slides sideways while staying in a straight line.
- CThe rig keeps going straight however far you turn the steering wheel.
Why
Locked trailer wheels lose their grip, and the trailer tends to swing around to the side, folding toward the vehicle pulling it. Releasing the brakes lets those wheels roll and grip again so the trailer can fall back in line.
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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