CDL PRACTICE TEST - GENERAL KNOWLEDGE (MAINE)
21.
The Gross Combination Weight (GCW) is:
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the weight of the vehicle, trailer, and cargo.
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the weight of the trailer and cargo.
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the total weight of a single vehicle including its load.
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22.
Most hydraulic brake failures occur for one of two reasons, one of which is:
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loss of hydraulic pressure.
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excessive downshifting.
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relying too much on the engine braking effect.
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23.
While driving, you should use your mirrors to:
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know where other vehicles are around you.
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check where the rear of your vehicle is while you make turns.
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All of the above.
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24.
You should avoid driving through flowing water of deep puddles if possible. If not, you should:
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press the accelerator and increase the engine and gear speed to the rpm required by road conditions.
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gently apply the brakes, increase engine rpm and cross the water while keeping light pressure on the brakes.
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set out reflective triangles to warn other traffic.
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25.
After starting the engine, the ABS light stays on. This means:
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the ABS is not working properly.
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the ABS is in Neutral.
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the ABS is working properly.
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26.
How can you determine your following distance?
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When the vehicle ahead of you passes a stationary object on the side of road, start counting the seconds it takes you to reach that same object.
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Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach that same object.
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When the vehicle ahead of you passes a stationary object such as a sign along the road, use the stopwatch on your smartphone to determine how long it takes you to reach that same object.
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27.
Hanging meat in a refrigerated truck can be:
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a very stable load if properly distributed.
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a very unstable load with a high center of gravity.
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a very unstable load with a low center of gravity.
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28.
Hydroplaning is more likely if:
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tire pressure is low.
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tire tread is worn.
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All of the above.
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29.
Which of the following is NOT true?
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ABS won't compensate for bad brakes.
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ABS only comes into play when a wheel would have locked up because of over braking.
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ABS will change the way you normally brake.
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30.
When driving in hot weather, drivers should inspect tires:
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every 4 hours or every 200 miles.
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every 3 hours or every 75 miles.
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every 2 hours or every 100 miles.
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