CDL PRACTICE TEST (WI) - GENERAL KNOWLEDGE TEST

31. Under-loaded front axles:
can cause tire failure.
can make the steering axle weight too light to steer safely.
can improve traction.
All of the above.
32. When using your turn signals, you should:
turn the signal off before you turn.
signal only if vehicles are in front of you.
signal only if vehicles are behind you.
signal well before you turn.
33. A high center of gravity:
is less dangerous in curves.
helps the vehicle be more stable while turning.
means you'll have better traction.
means your vehicle is more likely to tip over.
34. When only the tractor has ABS:
the ABS won't work.
there is a greater chance of jackknifing.
you should be able to maintain steering control during braking.
the trailer is less likely to swing out.
35. When driving, you should be alert for:
drivers whose vision is blocked.
sleepy drivers late at night.
people who are distracted.
All of the above.
36. When crossing railroad tracks, you should:
apply the parking brakes.
shift gears while crossing the tracks.
stay in your lane.
stop on the tracks.
37. If your vehicle is hydroplaning, you should:
accelerate to get through the water as quickly as possible.
use the brakes to slow down.
release the accelerator and push in the clutch.
None of the above.
38. Which of these is true about fire extinguishers?
You must study the instructions printed on the extinguisher before you need it.
Check that the extinguisher is the correct type for the class of fire that may occur.
The fire extinguisher must be properly charged and rated.
All of the above.
39. If you must drive through a deep puddle you should:
apply the brakes until your speed reaches 40 mph.
start slowly and Speed up smoothly and gradually so the vehicle does not jerk.
slow down and place transmission in a low gear.
speed up to get through the puddle as quickly as possible.
40. What is the minimum tread depth for front tires?
3/8 inch
1/32 inch
4/32 inch
1/2 inch
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