IN CDL Practice Test - General Knowledge

31. How can you determine your following distance?
When the vehicle ahead of you passes a stationary object such as a sign along the road, use the stopwatch on your smartphone to determine how long it takes you to reach that same object.
When the vehicle ahead of you passes a stationary object on the side of road, start counting the seconds it takes you to reach that same object.
Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach that same object.
None of the above.
32. A high center of gravity means:
the spring brakes will come fully on.
you'll have better traction.
you are more likely to tip over.
a rollover is less likely.
33. In cool weather, as the temperature rises to the point where ice begins to melt:
black will makes the road look wet.
traction will increase.
the road will become more slippery.
it is safe to drive.
34. Blocking _______________ to keep it from sliding.
is used in the front, back, and/or sides of a piece of cargo
is used only in the back of a piece of cargo
goes from the upper part of the cargo to the floor
None of the above.
35. When changing lanes, you should:
do it quickly.
not use your turn signals.
not use your mirrors.
None of the above.
36. When checking the condition of wheels and rims during the pre-trip inspection, make sure that:
no studs, spacers, clamps, or lugs are missing, bent, or broken.
no more than two lug nuts are missing.
the end of the kingpin is even with the top of the fifth wheel.
All of the above.
37. If you cannot see well enough while driving in cold weather, you should:
keep driving and check that the wiper blades press against the window hard enough to wipe the windshield clean.
turn your defroster on and slow down until you can see again.
reduce your speed and make sure the windshield washer works.
stop safely and fix the problem.
38. To use road speed to know when to switch gears you should:
watch your tachometer, and shift up when your engine reaches the top of the range.
learn what speeds each gear is good for.
learn the operating rpm range of your vehicle.
use the posted speed limit as a guide.
39. When inspecting your windshield, you should look for:
dirt.
cracks.
illegal stickers.
All of the above.
40. The most common cause of skidding is:
spilled oil.
black ice.
surface water.
driving too fast for conditions.
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