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1.
You are checking the tractor-trailer connection to make sure it is safe and secure. The landing gear should be:
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fully lowered.
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fully raised.
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raised slightly off the ground.
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None of the above.
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2.
The best way to test the trailer service brakes is to:
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pull forward quickly, then apply the trailer brakes with your hand control.
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put the handbrake on when there are no vehicles around you.
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accelerate to the maximum possible speed, then apply the trailer brakes fully.
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None of the above.
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3.
The use of brakes on a steep downgrade is:
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dangerous, and should be avoided at all costs.
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much more effective than the engine braking effect.
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a supplement to the braking effect of the engine.
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the main braking factor.
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4.
When you inspect the coupling, make sure there is ______ between the upper and lower fifth wheel.
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enough space
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about 1 inch
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no space
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about 1/2 inch
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5.
In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
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ease into the other lane slowly so the other car can get out of the way.
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assume the car left the roadway and change lanes as normal.
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wait until you are sure the car isn't in your blind spot.
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None of the above.
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6.
The emergency air line:
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controls the emergency brakes on combination vehicles.
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causes the tractor protection valve to close when the emergency line loses pressure.
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supplies air to the trailer air tanks.
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All of the above.
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7.
If loose or missing, _______ may cause movement between the frame and fifth wheel assembly.
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mounting bolts
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safety chains
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electric connectors
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locking pins
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8.
To unlock the fifth wheel, pull the release handle to the _______ position.
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closed
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neutral
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sixth
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open
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9.
Empty trucks:
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may have poor traction.
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require shorter stopping distances than fully-loaded trucks.
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have better traction than fully-loaded trucks.
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None of the above.
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10.
When going down grades, you should:
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shift up.
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downshift to a lower gear.
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rely solely on engine braking to reduce your speed.
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put the transmission in Neutral.
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