CLP/CDL Combination Vehicles Test Questions and Answers with Verified Solutions 2024
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CLP/CDL
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CLP/CDL
What two things are important to prevent rollover? (6.1.1) - 1. Keep cargo as close to the ground as possible
2. Drive slowly around turns
When you turn suddenly while pulling doubles, which trailer is most likely to turn over? (6.1.2) - The rear most trailer
What is the "crack-the-whip" e...
CLP/CDL Combination Vehicles Test
Questions and Answers with Verified
Solutions 2024
What two things are important to prevent rollover? (6.1.1) - 1. Keep cargo as close to
the ground as possible
2. Drive slowly around turns
When you turn suddenly while pulling doubles, which trailer is most likely to turn over?
(6.1.2) - The rear most trailer
What is the "crack-the-whip" effect? (6.1.2) - When you make a quick lane change or
sudden movement of your steering wheel, the rear trailer tends to swing out. The force
of the rear trailer becomes amplified, causing it to roll over (rearward amplification).
What is the proper following distance formula? (6.1.2) - Maintain at least 1 second of
following distance for each 10 feet of your vehicle length.
Add 1 second for speeds above 40mph.
Large combination vehicles take longer to stop when they are ______ than when they
are _______. (6.1.3) - EMPTY
FULLY LOADED
Why should you not use the trailer hand brake to straighten out a jackknifing trailer?
(6.1.5) - Because the brakes on the trailer wheels caused the skid in the first place.
CLP/CDL Combination Vehicles Test
, CLP/CDL Combination Vehicles Test
Once the trailer wheels grip the road again, the trailer will start to follow the tractor and
straighten out.
What type of trailers can get stuck on railroad-highway crossings? (6.1.4) - - Low slung
trailers, like car carriers, moving vans, and possum-belly livestock trailers
- Single-axle tractor pulling a long trailer with its landing gear set to accommodate a
tandem-axle tractor
How do you stop a trailer skid / jackknife? (6.1.5) - 1. Recognize the skid by looking at
your mirrors when braking to make sure that it is where it should be
2. Release the brakes to get traction back. Once the trailer wheels grip the road again,
the trailer will start to follow the tractor and straighten out.
What is off tracking? (6.1.6) - When the rear wheels follow a different path than the front
wheels when a vehicle goes around a corner. Refer to Figures 6.3 & 6.4
What should you do if you cannot complete your turn without entering another traffic
lane? (6.1.6) - Turn wide as you complete the turn. This is better than swinging wide to
the left before starting the turn because it will keep other drivers from passing you on
the right. If drivers pass on the right, you may collide with them when you turn.
When you back a trailer, you should position your vehicle so you can back in a curved
path to the DRIVER'S SIDE. True or False? (6.1.7) - TRUE! Backing to the driver's side
allows you to see your path better through the mirrors.
When you back a trailer, you should position your vehicle so you can back in a straight
line. True or False? (6.1.7) - TRUE!
CLP/CDL Combination Vehicles Test
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