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UPGRADE TO CDL PREMIUM
1.
To warn drivers behind you when you see you'll need to slow down, you should:
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sound your horn.
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flash the brake lights.
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turn off your lights.
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use your headlights.
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2.
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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set the parking brake and park in an open area.
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stay on the road and keep looking for the next available escape ramp.
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decide what to do as soon as you know your brakes do not work.
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3.
To make the brakes work, air brakes use:
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hydraulic air.
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nitrogen.
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compressed air.
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carbon monoxide.
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4.
Which of these describes the proper braking technique when driving on a long and steep downgrade?
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Release the brakes until your speed is 5 mph above your safe speed, then apply the brakes. When your speed has decreased to your safe speed, repeat the previous steps.
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Apply the brakes. When your speed has been reduced to 5 mph below your safe speed, release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
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Apply the brakes until your speed has been reduced to 5 mph, then release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
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All of the above.
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5.
Before driving a vehicle with a dual brake brake system, the driver should:
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wait at least 5 minutes before driving.
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allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems.
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wait at least 10 minutes before driving.
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pump the brake pedal 10 times to build pressure.
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6.
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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10, 100 and 200 feet
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5, 25 and 50 feet
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3, 15 and 45 feet
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7.
When the wheels of a trailer lock up, which of the following is most likely to occur?
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The trailer will tend to swing around (trailer jackknife).
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The trailer will tend to push the towing vehicle sideways (tractor jackknife).
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The rig will stay in a straight line but slide sideways.
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The trailer will the trailer
has overturn.
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8.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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anti-lock brakes.
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a rear backup camera.
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GPS
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hydraulic brakes.
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9.
If an item placed on a flatbed trailer is 7 feet long, it should have __ tie-downs.
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2
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1
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3
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7
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10.
When possible, you should park:
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on the roadway.
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on the shoulder.
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so you will be able to pull forward when you leave.
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so you will have to back up when you leave.
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