GENERAL KNOWLEDGE CDL TEST MISSOURI - PRACTICE TEST

21. When your drive wheels have poor traction, you should:
turn the retarder off.
only use the retarder on the front wheels.
turn the retarder on.
22. If you are traveling at 55 mph in a 30 foot vehicle, how many seconds of following distance should you have?
3 seconds
5 seconds
4 seconds
23. Hydroplaning occurs when:
tires lose traction.
you push in the clutch to let the drive wheels turn freely.
tire pressure is high.
24. To determine how much space you should keep in front of you, one good says you need at least ______ for each 10 feet of vehicle length at speeds below 40 mph.
2 seconds
3 seconds
1 second
25. A driver distraction is anything that takes your attention away from driving, such as:
pedestrians.
adjusting the radio.
All of the above.
26. ABS helps you:
drive faster.
brake harder.
None of the above.
27. You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
Keep moving at the present speed and steer very gently back onto the pavement.
Brake hard to slow the vehicle, then steer sharply onto the pavement.
If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
28. Driving at night is _______ driving during the day.
more dangerous than
about the same as
safer than
29. If a load is placed on one side of the trailer:
a rollover is more likely.
the steering axle weight will be too light to steer safely.
making turns may be easier.
30. Tar in the road pavement:
does not affect the road surface.
frequently rises to the surface in very hot weather.
can slow down your vehicle.
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