1 . Placards should be used:

Any time a vehicle is carrying hazardous materials.
When there is extra space on a truck.
Only when the amount of hazardous materials on a truck exceeds 200 pounds.
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2 . If you identify a distracted driver on the road, you should:

Tailgate them.
Flash your lights at them.
Give them plenty of space.
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3 . When driving in winter, which of the following should receive extra attention in a pre-trip inspection?

Coolant and antifreeze levels
The air conditioning unit
The oil pressure
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4 . On low bridges:

Height warnings must always be posted.
Height warnings must be posted at least twice.
Height warnings may be posted, but do not have to be.
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5 . What happens when a vehicle hydroplanes?

The tires lose contact with the road.
The trailer disengages from the tractor.
The vehicle becomes easier to control.
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6 . If you remain in neutral for too long while switching gears:

The vehicle will speed up.
You may have trouble putting the vehicle into the next gear.
You may kill the engine.
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7 . Shortly after a tire has been changed, you should:

Stop to make sure the lug nuts are still tight.
Repair the brakes.
Deflate the tire to 10 psi.
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8 . When changing lanes:

You should not use your mirrors.
You should use your mirrors.
You should not use your turn signals.
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9 . If you must stop on the side of a one-way or divided highway, how far behind your vehicle should you place warning devices?

10, 15, and 30 feet
10, 25, and 50 feet
10, 100, and 200 feet
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10 . Before beginning to drive downhill, you should:

Take your vehicle out of gear.
Shift into a lower gear.
Move into the left lane.
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11 . What is a tractor protection valve?

A valve to keep air in the brake system should there be a bad leak
A valve that prevents a truck from being stolen
A valve that prevents the driver from driving too fast
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12 . When leaving your vehicle:

The air brakes should be applied.
The parking brake should be applied.
Brakes should not be applied if the vehicle is left out of gear.
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13 . What does an Anti-Lock Braking System (ABS) do?

It allows a vehicle's wheels to lock up.
It prevents a vehicle's wheels from locking up.
It makes turning a vehicle easier.
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14 . If a shipping paper describes both hazardous and non-hazardous materials:

The hazardous materials must be listed first.
The hazardous materials must be written larger.
The hazardous materials must be listed in red ink.
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15 . Before entering a curve, you should:

Not use the mirrors.
Speed up.
Downshift.
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16 . Wheel rims that have been welded should:

Be painted.
Be placed on tires in the rear of the vehicle.
Not be used.
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17 . Roads are the most slippery right after it begins to rain because:

The water mixes with the oil and grease on the road that have not yet washed away.
Roads are naturally slippery.
The gravel gets washed into the middle of the lane.
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18 . When driving down a steep hill, your primary source of braking should be:

Engine adjustments.
The brakes.
The hand brake.
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19 . When conducting a check of the engine compartment during a vehicle inspection, you should not:

Check the engine oil level.
Check the coolant level.
Drain the brake fluid.
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20 . Regrooved tires:

Should not be used on any vehicle.
Should not be used on the front of a bus.
Should not be used on trucks hauling gravel.
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