CDL GENERAL KNOWLEDGE TEST (MS) - PRACTICE TEST
21.
When the spring brakes are on, you should never:
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decrease your speed.
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upshift.
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push the brake pedal down.
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change lanes.
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22.
The parking brake:
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should be used when driving in bad weather.
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should be used when you need to apply the brakes firmly.
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should be used whenever you park.
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All of the above.
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23.
Before unloading explosive materials, you should:
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turn your engine off.
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keep the engine running.
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connect heater power sources.
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use hooks or other metal tools if possible.
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24.
Which of the following statements about staying alert while driving is true?
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If you are drowsy, the only safe cure is to stop and take a fresh shower.
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Drinking a cup of coffee will do more to keep you alert than a 20 minute nap.
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Some drugs can overcome fatigue.
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None of the above.
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25.
Which of the following can cause vehicle fires?
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Short circuits and loose connections
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Improperly sealed cargo
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Improper fueling
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All of the above.
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26.
Skids caused by acceleration can usually be stopped by:
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taking your foot off the accelerator.
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applying the brakes firmly.
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swerving to the left.
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swerving to the right.
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27.
The earliest way to recognize that your trailer has started to skid is:
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by hearing squeaking noises from the wheels.
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by checking your mirrors.
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by checking the jackknife sensor.
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by releasing the brakes.
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28.
When switching gears, if you remain too long in Neutral:
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you may have difficulty putting the vehicle into the next gear.
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the vehicle will speed up.
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the brakes won't work.
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the ABS won't work.
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29.
When you need to brake, you should warn the drivers behind:
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by changing lanes.
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by turning on the 4-way emergency flashers.
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by making gestures.
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by flashing your brake lights.
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30.
When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs. If ____ or more are missing, it will put the vehicle out of service.
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15%
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50%
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25%
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10%
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