1.
Your vehicle has air brakes. To stop, you should:
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push the brake pedal down.
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pump the brake pedal 3 times.
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release the accelerator, push in the clutch, and shift to Neutral at the same time.
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pull the parking brake control knob out.
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2.
The center of gravity of a trailer should be:
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as low as possible.
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as high as possible.
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at the rear of the trailer.
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at the front of the trailer.
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3.
"Bobtail" tractors are:
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tractors with two trailers.
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heavily loaded trailers.
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tractors without semitrailers.
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tractors with a tank.
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4.
Under a pressurized system, the radiator cap:
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should never be hot.
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should never be removed until the system has cooled.
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should be removed when the coolant is hot.
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should always be cool.
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5.
Hanging meat in a refrigerated truck can be:
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a very unstable load with a high center of gravity.
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a very stable load if properly distributed.
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a very stable load with a low center of gravity.
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a very unstable load with a low center of gravity.
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6.
Regardless of its size, cargo should have at least ___ tie-downs.
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4
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3
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1
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2
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7.
When inspecting the coupling, how much space should there be between the upper and the lower fifth-wheel?
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It depends on the load
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It depends on the trailer
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None.
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½ inch
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8.
For safety during a trip, you should:
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watch gauges for signs of trouble.
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check critical items when you stop.
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use your senses to check for problems.
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All of the above.
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9.
If your vehicle has air brakes, to check that air flows to all trailers:
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watch each trailer’s air gauge for a drop of 25 psi.
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go to the rear of the second trailer and open the emergency line shut-off.
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check that the fifth wheel is not so far forward that the tractor frame will hit the landing gear.
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pull gently on the trailer with the tractor.
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10.
No matter how small the cargo is, it should have at least:
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6 tie-downs.
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2 tie-downs.
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4 tie-downs.
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1 tie-down.
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