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UPGRADE TO CDL PREMIUM
1.
ABS:
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does not decrease your stopping distance.
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helps you increase your following distance.
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helps you increase your average speed.
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improves your visibility at night.
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2.
The application pressure gauge:
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shows how much air pressure is being applied to the brakes.
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tells you how much pressure is in the air tanks.
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stops the compressor from pumping air.
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protects the tank and the rest of the system from too much pressure.
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3.
When you push in the red trailer air supply knob, this will:
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open the emergency line shut-off valve at the rear of the last trailer.
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supply air to the emergency supply lines.
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disconnect the air lines from the trailer.
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disconnect the electrical connector.
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4.
When coupling, you should:
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make sure the sliding fifth-wheel is locked.
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make sure the trailer wheels are not chocked.
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make sure the trailer kingpin is bent.
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be aware that wrong coupling and uncoupling can be very dangerous.
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5.
To prevent getting sleepy while driving, you should:
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keep the cab warm.
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drive alone whenever possible.
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keep cool by opening the window.
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close the vent.
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6.
Warnings on low bridges or underpasses:
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are often posted, but sometimes they are not.
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must be posted.
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are always posted.
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None of the above.
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7.
Rough acceleration can cause:
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tire damage.
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mechanical damage.
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damage electrical and brake lines.
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All of the above.
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8.
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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expect to hear a train when it's approaching.
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rely upon the presence of warning signals.
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9.
If your brakes fail on a steep mountain downgrade, you should:
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slow down until your vehicle comes to a complete stop.
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decide what to do as soon as you know your brakes do not work.
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stay on the road and keep looking for the next available escape ramp.
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set the parking brake and park in an open area.
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10.
The trailer hand valve should:
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never be used to test the trailer brakes.
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be used in driving.
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never be used for parking.
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All of the above.
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