CDL GENERAL KNOWLEDGE TEST (AL) - PRACTICE TEST
41.
If the drive wheels start to skid:
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accelerate slightly to regain control.
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use the brakes to slow down.
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push in the clutch to let them turn freely.
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All of the above.
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42.
If a trailer does not have spring brakes, to keep the trailer from moving you should:
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close the brake valve.
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park on a slight decline.
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use the service brakes.
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use wheel chocks.
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43.
The one-way check valve:
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keeps the axles in place.
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keeps air from going out if the air compressor develops a leak.
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supplies air to the trailer air tanks.
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keeps your wheels from locking up when you brake hard.
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44.
When checking tires, which of the following is not a problem?
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4/32 inch tread depth on front tires
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Cracked valve stems
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Too much air pressure
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Radial and bias-ply tires used together
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45.
Distracted driving may be caused by _________ while driving.
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adjusting the radio
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using your smartphone
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reading billboards
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All of the above.
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46.
Which of the following statements about cold medicines is true?
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They may make the driver drowsy, therefore they should not be used while driving.
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They are over-the-counter drugs, therefore they can be used while driving.
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They should only be used when driving during the daytime.
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None of the above.
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47.
The following are some causes of vehicle fires:
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Under-inflated tires and duals that touch
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Tailgating while smoking
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Tight turns and gravel roads
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All of the above.
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48.
Which of these is NOT a thing to do when caring for the injured at the scene of a crash?
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Stop heavy bleeding by applying direct pressure to the wound.
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Move a severely injured person if the danger of fire or passing traffic makes it necessary.
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Keep the injured persons cool.
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If a qualified person is helping the injured, stay out of the way unless asked to assist.
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49.
On any upgrade, gravity:
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doesn't affect your speed.
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slows you down.
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speed you up.
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doubles your speed.
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50.
During a hazardous materials emergency, you should:
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keep everyone away.
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prevent smoking and keep open flames away.
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warn others of the danger.
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All of the above.
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