CDL Section 6 Combination Vehicles Questions with Correct Answers 2026 | Complete Study Guide & Practice Test

CDL - SECTION 6: COMBINATION VEHICLES b b b b b




QUESTIONS WITH CORRECTANSWERS
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2026//2027 b




What two things are important to prevent rollover? - CORRECT ANSWER-
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Keep cargo as close to the ground as possible and drive slowly around turns.
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When you turn suddenly while pulling doubles, which trailer is most likely to turn over? -
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CORRECT ANSWER-The rear trailer is twice as likely to turn over.
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Why should you NOT use the trailer hand brake to straighten out a jackknifing trailer? -
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CORRECT ANSWER-The brakes on the trailer wheels cause the skid --
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release so the trailer wheels will grip the road again.
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What is off-tracking? - CORRECT ANSWER-
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When a vehicle goes around a corner and the rear wheels follow a different path than the
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front wheels.
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When you back a trailer, how should you position your vehicle? - CORRECT ANSWER-
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So you can back in a curved path to the driver's side.
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What type of trailers can get stuck on railroad-highway crossings? - CORRECT ANSWER-
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Low slung units (lowboy, car carrier, moving van, possum-
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belly livestock trailer) AND a single-
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axle tractor pulling a long trailer with its landing gear set to accommodate a tandem-
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axle tractor.
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Why should you NOT use the trailer hand valve while driving? - CORRECT ANSWER-
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The danger of making the trailer skid.
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