1 . 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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2 . Using an Anti-Lock Braking System (ABS):

Is required in some states.
Shortens brake response time.
Provides additional control.
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3 . Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.

One half
One third
One fifth
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4 . When stopping in an emergency situation, you should:

Veer your trailer to the right and stop.
Stop in a straight line.
Veer your trailer to the left and stop.
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5 . Hanging meat:

Should never be transported by trailer.
Can be an unstable load.
Must be approved by the Environmental Protection Agency (EPA).
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6 . Why do large vehicles use air brakes?

Other brake systems squeak too loudly.
Air brakes are very effective systems.
Other braking systems are hard to come by.
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7 . What do air brakes use to make the brakes work?

Compressed air
Outside air
Non-compressed air
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8 . Who is responsible for ensuring cargo is loaded properly?

The driver
The shipper
The recipient
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9 . Alcohol evaporators are:

Illegal.
Used to introduce alcohol into air brake systems.
Only allowed in the northern parts of the state.
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10 . If a load is 40 feet long, it should be secured by at least ____ tie-downs.

Two
Three
Four
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11 . A bus driver is:

Exempt from wearing a seat belt.
Not required to wear a seat belt, but encouraged to.
Always required to wear a seat belt.
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12 . Dry bulk tanks:

Usually have a low center of gravity.
Usually have a high center of gravity.
Are usually not allowed to cross railroad tracks.
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13 . A ____ allows a driver to gradually apply spring brakes.

Modulating control valve
Trailer air supply control
Relay valve
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14 . When driving with passengers, a bus driver should:

Engage in conversation with the passengers.
Not engage in conversation with passengers.
Ask passengers to watch out the windows for hazards.
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15 . Brakes can get out of adjustment quickly, especially:

If they are hot.
In the winter time.
If they are used frequently.
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16 . If the spring brakes are on, you should:

Not use the brake pedal.
Press the accelerator.
Move the steering wheel.
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17 . Regulations regarding commercial vehicle weight and load securement may vary from state to state. Regarding these regulations:

The laws of the state where the trip originated take precedence.
The laws of the state in which the vehicle is physically located take precedence.
The driver can choose which state’s laws to follow.
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18 . Hanging meat in a refrigerated truck:

Is a good way for inexperienced drivers to gain experience.
Requires a skilled driver.
Is illegal in most states.
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19 . If a bus has stopped at an intermediate stop or its final destination, passengers should be told:

The location.
The bus company’s name.
The name of the driver.
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20 . Having weight loaded in a way that creates a high center of gravity:

Increases the likelihood of a rollover.
Increases the likelihood that items will fall down.
Increases the difficulty of unloading the cargo.
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