1 . To stop a vehicle using air brakes:

The brake pedal should be pressed.
The brake pedal should be lifted.
The brake knob should be pulled out.
The brake knob should be pushed in.
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2 . Tires of mismatched sizes:

Can be used only on a front axle.
Can be used only on a trailer's axles.
Should be corrected before driving.
Improve fuel economy.
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3 . Distracted driving:

Can only be caused by physical distractions.
Can only be caused by mental distractions.
Can be caused by physical and/or mental distractions.
Can only be caused by cell phone use.
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4 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi.
When tank pressure falls below 60 psi.
When tank pressure falls below 10 psi.
When tank pressure falls below 5 psi.
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5 . An example of mandatory emergency equipment is:

A supply of spare electrical fuses.
A loud horn.
A battery-operated flashlight.
A supply of fireworks.
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6 . Slippery roadways usually:

Make it more difficult to stop a vehicle.
Make it easier to stop a vehicle.
Make it easier to drive a vehicle.
Can be avoided by driving at night.
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7 . If unsure if a road is becoming icy, a driver can:

Guess.
Open the window and check the front of the mirror for ice.
Try to look at the road closely.
Look at a weather forecast.
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8 . Air tanks usually hold enough compressed air:

For one stop before needing to be refilled.
For several stops before needing to be refilled.
For a day’s worth of braking.
For an unlimited number of stops.
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9 . When driving a combination rig, following distance should be:

Decreased in poor weather.
Shorter than when driving a single vehicle.
About the same as when driving a single vehicle.
Longer than when driving a single vehicle.
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10 . If your tractor is equipped with ABS but your trailer is not, the ABS:

Will not be effective.
Will still improve your steering control.
Will make jackknifing easier.
Will allow others to see when you brake.
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11 . Which of the following is not a sign of bad brake drums or shoes?

Cracked drums
Pads with oil on them
Shoes worn thin
Shoes that are not covered in brake fluid
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12 . Glad hands are:

Coupling devices.
Happy passengers.
Eager mechanics.
Pleased drivers.
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13 . If being tailgated, you should:

Drive in the left lane.
Drive in the right lane.
Speed up.
Drive on the shoulder.
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14 . Hydroplaning occurs when:

Tires lose traction with the surface of the road.
Tires have increased traction with the surface of the road.
Front tires have more traction that rear tires.
Front tires have less traction than rear tires.
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15 . When entering fog, you should:

Put on your high beam headlights.
Increase your speed.
Turn up the volume of the radio.
Slow down.
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16 . What is a concern immediately after it begins raining?

The water will mix with grease and oil on the road, making the roadway slippery.
A driver may forget where the windshield wiper lever is located.
It may stop raining.
People will be using their windshield wipers needlessly.
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17 . Which of the following is a characteristic of a potentially fatigued driver?

They slept for eight hours before a long trip.
They stop periodically during a long trip.
They drive alone on a long trip.
They drive during the day.
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18 . If confronted by an aggressive driver, you should:

Make eye contact with the driver.
React to the driver's gestures.
Challenge the driver to a road race.
Ignore the driver, if possible.
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19 . If you must drive very slowly, you should:

Warn other motorists.
Drive on the shoulder.
Stay in the left lane.
Sound your horn.
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20 . In extremely hot conditions, you may have to:

Increase your speed to cool the engine.
Reduce your speed to prevent overheating.
Drain the engine coolant.
Follow other vehicles more closely than normal.
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