1.
On front tires, tread should be at least:
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1/16 inch
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4/32 inch
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4/16 inch
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2/32 inch
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2.
Which of the following is most likely to roll over?
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The rear trailer of a triple
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The front trailer of a double
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The middle trailer of a triple
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The rear trailer of a double
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3.
In a dual air brake system, if one air system is very low on pressure:
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you should pump the brakes to restore pressure.
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you should drive and brake as you always have.
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either the front or rear brakes will not be operating fully.
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the effect won't be noticeable for the first 50 miles.
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4.
To prevent rollover, you should do all of the following except:
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keep the load centered on your rig.
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drive slowly around turns.
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avoid quick lane changes.
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put the lightest parts of the cargo under the heaviest parts.
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5.
When approaching a double railroad track, you should:
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remember that a train on one track may hide a train on the other track.
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remember that trains may be more frequent.
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rely upon the presence of warning signals.
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expect to hear a train when it's approaching.
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6.
Before operating the vehicle, the driver should:
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rely on the last vehicle inspection and skip the pre-trip inspection.
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should not review the vehicle inspection report and immediately try to find any vehicle defects.
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review the last vehicle inspection report.
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None of the above.
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7.
With an engine fire, you should:
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turn the engine off as soon as possible.
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open the hood as soon as possible.
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not shoot foam from the vehicle’s underside.
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All of the above.
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8.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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rollover.
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off-tracking.
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jackknifing.
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hydroplaning.
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9.
What factors can cause brakes to fade?
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Slippery surfaces and shaded areas.
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Gravel and tar.
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Dirt roads and in unpaved yards.
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Excessive heat and brakes out of adjustment.
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10.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
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5, 50 and 500 feet
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3, 15 and 45 feet
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5, 25 and 50 feet
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10, 100 and 200 feet
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