CDL - SECTION 6: COMBINATION VEHICLES EXAM QUESTIONS AND ANSWERS.
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Course
Cdl
Institution
Cdl
CDL - SECTION 6: COMBINATION VEHICLES EXAM QUESTIONS AND ANSWERS.
What two things are important to prevent rollover? - CORRECT ANSWER Keep cargo as close to the ground as possible and drive slowly around turns.
When you turn suddenly while pulling doubles, which trailer is most likely to tu...
CDL - SECTION 6: COMBINATION
VEHICLES EXAM QUESTIONS AND
ANSWERS.
What two things are important to prevent rollover? - CORRECT ANSWER Keep cargo as close to the
ground as possible and drive slowly around turns.
When you turn suddenly while pulling doubles, which trailer is most likely to turn over? - CORRECT
ANSWER The rear trailer is twice as likely to turn over.
Why should you NOT use the trailer hand brake to straighten out a jackknifing trailer? - CORRECT
ANSWER The brakes on the trailer wheels cause the skid -- release so the trailer wheels will grip the road
again.
What is off-tracking? - CORRECT ANSWER When a vehicle goes around a corner and the rear wheels
follow a different path than the front wheels.
When you back a trailer, how should you position your vehicle? - CORRECT ANSWER So you can back in a
curved path to the driver's side.
What type of trailers can get stuck on railroad-highway crossings? - CORRECT ANSWER Low slung units
(lowboy, car carrier, moving van, possum-belly livestock trailer) AND a single-axle tractor pulling a long
trailer with its landing gear set to accommodate a tandem-axle tractor.
Why should you NOT use the trailer hand valve while driving? - CORRECT ANSWER The danger of making
the trailer skid.
Describe what the trailer air supply control does. - CORRECT ANSWER Push in -- Supply air to trailer;
Push out -- Shut air off and put on trailer emergency brakes
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