CDL PRACTICE TEST (MA) - GENERAL KNOWLEDGE TEST
21.
Effects of distracted driving include:
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increased following distance.
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incorrect inputs to the steering.
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reduction in braking distance.
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improved reaction time.
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22.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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off-tracking.
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hydroplaning.
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jackknifing.
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rollover.
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23.
A high center of gravity means:
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you'll have better traction.
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the spring brakes will come fully on.
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a rollover is less likely.
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you are more likely to tip over.
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24.
Which of the following statements about backing heavy vehicles is true?
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The helper should stand where you cannot see the helper.
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Always back as quickly as possible.
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You should avoid backing whenever you can.
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Back to the right side so that you can see better.
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25.
To test the stopping action of your service brakes, go about:
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15 mph.
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50 mph.
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25 mph.
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5 mph.
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26.
To determine a safe speed for a downgrade, you should consider:
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Oncoming traffic.
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The total weight of the vehicle and cargo.
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Trip origin and destination city.
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All of the above.
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27.
Hydroplaning:
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only occurs at speeds above 55 mph.
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is more likely when tire pressure is low.
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is more likely to occur when tire tread is in good condition.
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causes your vehicle to go faster.
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28.
When your drive wheels have poor traction, you should:
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turn the retarder off.
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only use the retarder on the front wheels.
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turn the retarder on.
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only use the retarder on the rear wheels.
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29.
You should always be looking for hazards to have time to plan a way out of any emergency. This is part of being a:
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defensive driver.
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reasonable driver.
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good enough driver.
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modular driver.
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30.
During a trip you should check:
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pressure gauges.
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mirrors.
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temperature gauges.
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All of the above.
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