Colorado CDL Practice Test - General Knowledge
21.
When you see a hazard that will require slowing down, you should:
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speed up to pass the obstacle as quickly as possible.
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alert the drivers behind by pointing and sounding your horn.
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warn the drivers behind by flashing your brake lights.
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immediately come to a compolete stop.
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22.
The size of motorcycles can cause you to misjudge their speed and distance. You should:
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never share lanes with motorcycles.
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check twice for motorcycles before pulling out into traffic.
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use extra caution before you pull out in front of a motorcycle.
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All of the above.
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23.
How does ABS help you?
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ABS makes stab braking more effective.
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ABS helps you avoid wheel lock up and maintain control when you brake hard on slippery surfaces.
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ABS replaces your normal brakes and helps you to stop faster.
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ABS always shortens your stopping distance.
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24.
Using a helper when backing up is:
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not recommended.
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encouraged.
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illegal.
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dangerous.
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25.
When driving, you:
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should only use turn signals if there is a vehicle behind you.
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should always use turn signals to tell other drivers your intentions.
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should carefully evaluate road and traffic conditions to decide if you should use turn signals.
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should not use turn signals when the road is empty.
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26.
Service lines are often coded with the color ____ to keep from getting them mixed up with the emergency line.
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blue
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yellow
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red
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orange
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27.
On any upgrade, _________ – the more you will have to use lower gears to climb hills or mountains.
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the heavier the load
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the longer the grade
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the steeper the grade
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All of the above.
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28.
Skids caused by acceleration can usually be stopped by:
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swerving to the right.
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taking your foot off the accelerator.
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swerving to the left.
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applying the brakes firmly.
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29.
If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
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2 seconds
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4 seconds
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3 seconds
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5 seconds
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30.
If you are being tailgated, you should:
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avoid quick changes.
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avoid tricks like turning on your taillights or flashing your brake lights.
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increase your following distance.
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All of the above.
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