1 . Stopping distance can be affected by:

Driving speed.
Temperature.
Time of day.
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2 . 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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3 . When should the trailer hand valve be used?

Only when the trailer is carrying a load
Only to test the trailer’s brakes
Only in inclement weather when the trailer may skid
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4 . If you are unsure if there is enough space for your vehicle to safely pass under an upcoming bridge, you should:

Speed up.
Swerve while under the bridge.
Slow down.
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5 . During a pre-trip inspection, belts should be:

Loosened.
Checked for tightness.
Scrubbed clean.
Left alone and not inspected.
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6 . When parked on the side of the road:

Use only the rear flashing lights.
Use only one set of turn signals.
Use your four-way flashers.
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7 . When approaching a construction worker who is near the road, you should:

Increase your speed.
Decrease your speed.
Move to the shoulder.
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8 . The minimum acceptable tread depth for rear tires is:

1/64 of an inch.
1/32 of an inch.
2/32 of an inch.
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9 . When transporting cargo, drivers must check the securement of the cargo every:

10 miles.
150 miles.
500 miles.
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10 . Why should the steps of a pre-trip inspection be done in the same order each time?

Because you will be less likely to forget to check something
Because it will be faster
Because it is required by law
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11 . As part of the vehicle inspection test, a CDL applicant will be asked to:

Check the engine oil level.
Replace a tire.
Remove the alternator belt.
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12 . While driving a vehicle, if an unusual noise or feeling occurs, the driver should:

Assume it is not a concern and continue driving.
Hope the vehicle makes it until it is switched to another driver.
Check out the situation to determine the proper solutions.
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13 . When backing with a trailer:

You should not back up in a straight line.
You should not correct drift until you are far off course.
You should frequently pull forward to reposition the vehicle.
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14 . If you are being tailgated, you should:

Drive on the shoulder.
Allow the vehicle to pass.
Drive faster.
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15 . How many daily hours of sleep does an adult need to maintain alertness?

Six to seven
Seven to eight
Eight to nine
Four to five
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16 . How much water must be present for a vehicle to hydroplane?

Usually several inches
A good amount, such as a large puddle
A small amount
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17 . Rims with welding repairs:

Are not safe to be used.
Are acceptable to be used on tires on the rear of a vehicle.
Are acceptable to be used only when carrying a heavy load.
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18 . When doing a pre-trip inspection, you should:

Always go through the steps in the same order.
Be as quick as possible.
Not worry about small mechanical issues.
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19 . If you notice anything affecting the safety or mechanical functioning of your CMV while driving, you should:

Stay quiet and see if the problem goes away.
Make a written report that includes your concerns.
Try to fix it yourself.
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20 . Before positioning a converter dolly for coupling, you should release the dolly's spring brakes. Do this by:

Using the dolly parking brake control.
Removing the air tank petcock.
Raising the dolly support.
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