MN CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
21.
If you are driving a 30 foot vehicle at 35 mph, you should leave at least _______ between your vehicle and the vehicle in front of you.
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3 seconds
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4 seconds
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1 seconds
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2 seconds
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22.
Front brake limiting valves were used to:
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reduce the chance of the front wheels skidding on slippery surfaces.
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reduce exhaust emissions.
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prevent overheating of the front tires.
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reduce your speed so further braking or shifting is not required.
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23.
If you realize you are going to be later to your destination than you expected, you should:
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exceed the posted speed limit when no other vehicles are near.
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speed up.
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do your best to avoid the delay.
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deal with it and accept the delay.
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24.
When driving on slippery surfaces, a lack of spray from other vehicles indicates that:
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ice has formed on the road.
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there is no ice on the road surface.
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the pavement is dry.
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the road hasn't started to ice up yet.
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25.
Rollovers happen when drivers:
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turn too fast.
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stop too often.
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brake too hard.
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turn too slowly.
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26.
Which of the following statements about accelerating is TRUE?
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Rough acceleration can cause mechanical damage.
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When traction is poor, you should avoid speeding up gradually.
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If the drive wheels begin to spin, speed up to regain traction.
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All of the above.
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27.
Tie-downs must be strong enough:
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to lift 1 1/2 the weight of the cargo.
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to lift 2 1/2 the weight of the cargo.
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to lift 1/2 the weight of the cargo.
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to lift the weight of the cargo.
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28.
You should carefully check for traffic:
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When driving through an intersection.
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When approaching a curve.
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As you approach an intersection.
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All of the above.
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29.
If you are being tailgated, you should:
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open up room in front of you.
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increase your speed very gradually.
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make quick changes.
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turn on your taillights.
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30.
To test the service brake:
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push the brake pedal firmly while going about 5 mph.
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gently try to pull forward with the trailer parking brake on, then release the brake.
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shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
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push the brake pedal firmly while slowly moving backward.
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