1 . Your horn should be used to:

Tell other drivers that you are angry.
Warn other drivers that you are near.
Frighten other drivers.
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2 . What is traction?

Friction between the tires and road
Tires' rates of rotation
The length of time needed to activate the brakes
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3 . Dollies equipped with ABS are required to have malfunction lamps located where?

On the rear
On the left side
On the front
On the top
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4 . Lights that indicate that anti-lock brakes are not working are:

Gray.
Blue.
Yellow.
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5 . Driving in extremely hot weather:

Should not be done.
Requires you to remove oil from the engine.
Is safer with less coolant.
Can increase tire pressure.
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6 . After coupling, there should be ____ between the upper and lower fifth wheel.

No space
Very little space
A lot of space
Three inches of space
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7 . On a slippery road, a driver should:

Make turns as quickly as possible.
Refrain from passing slower vehicles.
Stop quickly.
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8 . A cardboard box on the roadway:

Should be expected to be on the roadway.
Is usually empty and harmless.
Could contain a heavy object that could damage vehicles.
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9 . Which of the following is not an example of a driving hazard?

An accident on the roadway
An open road
A police car assisting a motorist on the side of the road
An ice cream truck
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10 . When driving through fog, a driver should:

Use high beam headlights.
Use low beam headlights.
Run the windshield wipers.
Drive on the shoulder.
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11 . When driving at night, you should do all of the following, except:

Make sure you are rested.
Make sure your glasses are clean.
Wear sunglasses.
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12 . 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.
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13 . When checking the engine compartment, you should check all of the following, except:

The engine oil level.
The coolant level in the radiator.
The windshield washer fluid level.
The fuel level.
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14 . Which type of brakes do most heavy-duty vehicles have?

Air brakes
Solid brakes
Liquid brakes
Gravity brakes
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15 . When inspecting the windshield before a trip, a person should do all the following, except:

Remove and sharpen the wiper blades.
Check the windshield wipers for proper spring tension.
Check the wiper blades for damage.
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16 . The heavier the vehicle:

The less important the brakes become.
The harder the brakes need to work.
The quieter the brakes will sound.
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17 . During a trip, gauges are:

Often misleading.
The only way a driver can learn of potential trouble with the vehicle.
A way to learn of potential trouble with the vehicle.
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18 . If another driver is following you too closely, you should do all of the following, except:

Avoid quick changes.
Increase the distance between you and the vehicle in front of you.
Speed up.
Avoid relying on tricks to help others pass.
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19 . A slack adjuster should move no more than ____ from where it is attached to the push rod.

Two inches
Five inches
One inch
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20 . Before beginning downhill, you should:

Shift into a higher gear.
Take your vehicle out of gear.
Shift into a lower gear.
Rely only on braking to reduce your speed.
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