CDL · Combination vehicles
What can the crack-the-whip effect do to a combination vehicle when the driver changes lanes quickly?
Correct answer: Cause the trailer to roll over.
Answer options
- ACause the trailer to roll over Correct
- BMake the trailer follow the tractor more smoothly
- CGive the tires a better grip on the road
Why
A sudden steering movement grows stronger as it travels back through a combination, so the trailer swings much harder than the tractor and can tip over. Make lane changes gradually and steer smoothly to prevent it.
About this question
Topic: Combination vehicles License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
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This question is part of Driving a Tractor-Trailer (14 questions). Take the full set and check your score.
Practice Driving a Tractor-TrailerMore questions from Driving a Tractor-Trailer
- Which of these helps keep your vehicle from rolling over?
- Which loading practice makes a rollover less likely?
- A combination-vehicle driver wants to reduce the chance of a rollover. Which loading practice helps?
- Locked trailer wheels can make a trailer slide out and swing to the side. Under which load condition is this most likely?
- What should you do when the wheels of your trailer begin to skid?
- While backing a trailer, you notice it starting to stray from the path you want. What should you do right away?
- You are pulling a tank trailer when the tractor's drive wheels lock up. What could happen?
- Which statement best describes off-tracking?
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