1.
When you are uncoupling a loaded trailer, lower the landing gear until:
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the tractor frame is under the trailer.
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the pressure in the system is above 55 psi.
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it makes firm contact with the ground.
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makes contact with the ground, and leave the trailer off the fifth wheel.
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2.
When driving at night you should:
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keep the interior light on.
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use your high beams when it is safe and legal to do so.
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always use low beams.
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All of the above.
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3.
Passive railroad crossings:
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have at least one traffic control device.
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should never be crossed using a CMV.
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usually have a person directing traffic.
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do not have traffic control devices.
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4.
If your vehicle has dummy couplers, why should you use them when the air lines are not connected to a trailer?
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Because if you don't, you will never build system pressure.
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To prevent freezing of the washer liquid.
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To prevent overheating.
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To prevent water and dirt from getting into the coupler and the air lines.
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5.
You are driving a heavy vehicle with a manual transmission, and you have to stop on the shoulder while driving on an uphill grade. When putting your vehicle back in motion up the grade, you should:
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keep the clutch slipping while slowly accelerating.
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use the parking brake to hold the vehicle until the clutch engages.
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shift down to a speed that you can control without using the brakes.
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partly engage the clutch before you take your right foot off the brake.
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6.
Before starting down a hill, you should:
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look for an escape route.
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release the accelerator and shift to Neutral at the same time.
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apply the brakes hard.
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slow down and shift to a lower gear.
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7.
Strong winds can make it difficult to stay in your lane, especially when:
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going into tunnels.
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driving alongside other vehicles.
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driving at speeds below 40 mph.
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coming out of tunnels.
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8.
One way to prevent hydroplaning is to:
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take curves at higher speeds.
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use the controlled braking method.
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make sure you have enough tread on your tires.
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have less than 4/32 inch tread depth in every major groove on front tires.
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9.
Fully loaded rigs:
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are just as likely to roll over as empty rigs.
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are less likely to roll over than empty rigs.
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are much more likely to roll over than empty rigs.
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None of the above.
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10.
When backing, as soon as you see the trailer getting off the proper path, you should:
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turn the top of the steering wheel in the opposite direction of the drift.
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to keep a firm grip on the steering wheel and continue backing.
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turn the top of the steering wheel in the direction of the drift.
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None of the above.
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