Combination Vehicles CDL License Test
Try this short CDL license combination vehicles practice test to check your knowledge about the safe operation of a combination vehicle.
You got at least 70% correct, nice job. If you didn’t get 100% study some more and take this quiz again.
You didn’t get 70% correct. Study some more and take this quiz again.
#1 True or False: Combination vehicles are usually heavier, longer, and require more driving skill than single commercial vehicles.
#2 The following 2 things will help you prevent rollover–___________, and drive slowly around turns.
A high center of gravity
A low center of gravity
#3 True or False: More than half of truck driver deaths in accidents are the result of truck rollovers.
#4 When not carrying as full load, make sure your cargo is _____________.
fastened along 1 side of the trailer
centered and spread out as much as possible
#5 “________ ________” causes the crack-the-whip effect.
#6 True or False: Large combination vehicles take longer to stop when they are empty than when they are fully loaded.
#7 When the wheels of a trailer lock up, the trailer will tend to ___________.
#8 When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called __________.
Both of these
#9 Whenever you back up with a trailer, try to position your vehicle so you can back _______________.
in a straight line
#10 If you must back up on a curved path, back toward the ___________.
#11 As soon as you see the trailer getting off the proper path, correct it by turning the top of the steering wheel __________.
in the direction of the drift
in the opposite direction of the drift
#12 What type of trailers can get stuck on railroad-highway crossings?
trailers with low underneath clearance
CDL manual (study section 6 for this test)