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UPGRADE TO CDL PREMIUM
1.
In newer vehicles with air brakes, you put on the parking brake:
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moving the orange push-pull lever to the right.
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using a diamond-shaped, yellow, push-pull control knob.
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using a P-shaped, yellow control knob.
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placing the transmission in Park.
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2.
A passive railroad crossing is one that:
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does not have any type of traffic control device.
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requires you to stop and wait until the traffic control device installed at the crossing tells you to proceed.
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has at least two traffic control devices installed at the crossing to regulate traffic.
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has a traffic control device installed at the crossing to regulate traffic.
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3.
Tractor and straight truck spring brakes will come fully on when the air pressure drops to a range of:
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30 to 35 psi.
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5 to 15 psi.
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55 to 74 psi.
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20 to 45 psi.
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4.
To avoid becoming a distracted driver you should:
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not engage in complex conversations with others.
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not turn off all communication devices.
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adjust all vehicle controls and mirrors while driving.
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eat and drink while you drive.
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5.
You should drain the air tanks completely. If water and oil collect in the air tanks:
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your brakes could become hard to press.
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your brakes could fail.
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your brakes could heat up.
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None of the above.
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6.
Which of the following can cause brakes to fade or fail?
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Brakes out of adjustment
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Not relying on the engine braking effect
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Excessive use of the service brakes
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All of the above.
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7.
ABS:
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allows you to brake harder.
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replaces your normal brakes.
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should only be used on dry roads.
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is an addition to your normal brakes.
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8.
The stop light switch:
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tells you when you need to use your parking brake instead of the service brake.
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turns on the brake lights when you put on the air brakes.
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should be used to fend off tailgaters.
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warns you when the air supply pressure drops below 55 psi.
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9.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
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left; right
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left; left
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right; right
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right; left
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10.
When driving at night, you should:
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drive slowly enough to see obstacles with your headlights.
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look directly at the lights of oncoming vehicles.
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put your own high beams on if other drivers don't put their low beams on.
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use dark lenses if possible.
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