CDL GENERAL KNOWLEDGE TEST (MD) - PRACTICE TEST
21.
An Anti-lock Braking System (ABS):
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keeps your wheels from locking up when you brake hard.
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always shortens your stopping distance.
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lets you drive faster.
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increases your normal braking capability.
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22.
Fully loaded rigs:
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are much more likely to roll over than empty rigs.
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are less likely to roll over than empty rigs.
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are just as likely to roll over as empty rigs.
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None of the above.
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23.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
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3, 15 and 45 feet
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10, 100 and 200 feet
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5, 50 and 500 feet
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5, 25 and 50 feet
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24.
If you've been drinking alcohol, only ____ will sober you up.
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black coffee
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exercise
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time
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a cold shower
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25.
Which of the following statements about overhead clearance is true?
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If the road causes your vehicle to tilt, you should drive a little closer to the side of the road.
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You should assume the heights posted at bridges and overpasses are correct.
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The weight of a cargo van changes its height.
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All of the above.
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26.
You should carefully check for traffic:
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When approaching a curve.
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As you approach an intersection.
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When driving through an intersection.
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All of the above.
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27.
Which of the following statements about brake shoes is true?
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Brake shoes should be thinner than ¼ inch.
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brakes can fade or fail from excessive heat caused by relying too much on the engine braking effect.
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Brake drums must have cracks longer than half the width of the friction area.
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None of the above.
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28.
What should you do at an accident scene, among other things, to help prevent another accident?
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Call for assistance.
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Put on your 4-way emergency flashers.
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Stay in your vehicle and file an accident report.
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If you are stopping to help, park in the area immediately around the accident.
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29.
When checking the steering system during your pre-trip inspection you should look for:
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cracked drums.
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steering wheel play of more than 10 degrees.
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mismatched lock rings.
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shoes or pads with oil or grease on them.
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30.
Most heavy-duty vehicles use:
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air brakes.
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pressure brakes.
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solid brakes.
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hydraulic brakes.
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