CDL COMBINATION VEHICLES STUDY GUIDE EXAM.
TREU OR FALSE:
More than half of truck driver deaths in crashes are the result of truck rollovers. - CORRECT ANSWER True
Fully loaded rigs are ___ times more likely to roll over in a crash than empty rigs. - CORRECT ANSWER 10
What can you do ...
More than half of truck driver deaths in crashes are the result of truck rollovers. - CORRECT ANSWER
True
Fully loaded rigs are ___ times more likely to roll over in a crash than empty rigs. - CORRECT ANSWER 10
What can you do to prevent rollovers? - CORRECT ANSWER keep the cargo close to the ground
drive slowly around turns
TRUE OR FALSE:
Keeping cargo low is even more important in combination vehicles than in straight trucks. - CORRECT
ANSWER True
Rollovers happen when you turn too___ - CORRECT ANSWER Fast
Trucks with trailers have a dangerous... - CORRECT ANSWER crack the whip effect
TRUE OR FALSE:
When pulling trailers, a sudden movement with your steering wheel may cause your tralier to tip over. -
CORRECT ANSWER True
, Large combination vehicles take longer to stop when they are... - CORRECT ANSWER Empty
How much follwoing distance should you have? - CORRECT ANSWER At leats 1 second for every 10 feet
of vehicle length under 40 mph.
How much following distance should you have driving 50 mph? - CORRECT ANSWER At least 1 second
for every 10 feet of your vehicle plus an additional second.
When lightly loaded, the very stiff suspension springs and strong brakes give poor traction. - CORRECT
ANSWER True
TRUE OR FALSE:
Tests have shown that bobtails are easy to stop. - CORRECT ANSWER False
In any combination rig, allow lots of ___ distance and look far ahead. - CORRECT ANSWER Following
What is the best way to recognize that the trailer has started to skid? - CORRECT ANSWER Seeing it in
your mirriors.
TRUE OR FALSE:
When braking hard you should check your mirriors to make sure that your trailer is staying where it
should? - CORRECT ANSWER True
Why should you not use the trailer hard brake to straighten out a jackknifing trailer. - CORRECT ANSWER
This is the wrong thing to do since the brakes on the trailer wheels caused the skid in the first place.
Once the trailer wheels grip the road again, the trailer will start to follow the tractor and starighten out.
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