1 . When making a left turn, you should start the turn:

Before reaching the center of the intersection.
No sooner than the center of the intersection.
After your rear wheels have passed the center of the intersection.
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2 . Water that has collected on a roadway can cause:

Hydroplaning.
Acceleration.
Stopping.
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3 . The only way to sober up after consuming alcohol is to:

Take a cold shower.
Exercise.
Wait.
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4 . A pre-trip vehicle inspection:

Is not required if the driver regularly uses the vehicle.
Is not required for trips under 100 miles.
Is only to be performed by a mechanic.
Is required by law.
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5 . When should you slow for a curve?

Before entering the curve
While in the curve
After the curve
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6 . What do air brakes use to make the brakes work?

Compressed air
Outside air
Non-compressed air
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7 . Combination vehicles:

Are usually shorter than single commercial vehicles.
Are usually lighter than single commercial vehicles.
Require more skill to drive than single commercial vehicles.
Are easier to drive than single commercial vehicles.
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8 . If you are driving at a reduced speed in a construction zone when you spot a construction worker near the road, you should:

Speed up.
Stay at your current speed.
Further reduce your speed.
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9 . Convex mirrors:

Cannot be used on vehicles transporting hazardous materials.
Are illegal in most states.
Can help drivers see a larger area.
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10 . When in heavy traffic, the safest driving speed is:

Slower than the speed being driven by surrounding traffic.
The same speed being driven by surrounding traffic.
Faster than the speed being driven by surrounding traffic.
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11 . If a vehicle's Anti-Lock Braking System (ABS) is malfunctioning:

The vehicle will have no brakes.
The vehicle will still be able to brake.
The vehicle will likely travel faster than usual.
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12 . A driver can rely on front wheel braking to work:

On dry roadways only.
Under all conditions.
Under all conditions, except for snow.
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13 . The two indicators that determine when you should upshift are:

Engine speed and road speed.
Other trucks and road conditions.
Timing and road position.
Oil pressure and air brake pressure.
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14 . The most common type of foundation brake used is the:

S-cam drum brake.
C-cam drum brake.
G-cam disc brake.
P-cam disc brake.
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15 . Both systems in a dual air brake systems share:

Air tanks.
Hoses.
Air lines.
An air compressor.
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16 . Accelerating roughly is:

Encouraged at slow speeds.
Encouraged at all speeds.
Discouraged, as it may cause damage to the vehicle.
Discouraged, as it may confuse other drivers.
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17 . What can happen if a parking brake is used in very wet weather when temperatures are below freezing?

The brakes will squeak.
The brakes may freeze so the vehicle cannot move.
The brakes may suddenly release by themselves.
The brakes may explode.
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18 . To prevent a vehicle from rolling backward when beginning to move forward from a stopped position, you should:

Turn off the engine.
Partly engage the clutch.
Apply the emergency brake.
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19 . Brakes out of adjustment will:

Work properly.
Cause some of the brakes to overwork and malfunction.
Allow better acceleration.
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20 . 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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