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Mississippi CDL Permit Test - Passenger

Number of questions: 20
Passing score: 16
Directions: To receive this endorsement, applicants must pass a test consisting of 20 multiple choice questions. Each
You have made error so far
Passing grade —
4 or fewer errors

During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.

2 psi
4 psi
6 psi

When driving down a steep grade, your brakes may fade. What happens if brakes fade?

They become quieter.
They become less effective.
They work better than usual.
They work differently from front to back.

Mirrors should be adjusted:

While moving.
When the trailers are straight.
When you are standing next to the vehicle.
By an assistant.

If you see taillights ahead while you are driving in fog:

The lights may not indicate where the road is as the vehicle may have pulled off the roadway.
You can assume the vehicle ahead is on the road.
It may be an optical illusion.

Which of the following is not a cause of hydraulic brake failure?

Loss of hydraulic pressure
Brake fade on long hills

To best reduce the distractions of a cell phone, you should:

Stay on a single call for an entire trip.
Turn the phone off before driving.
Only us the phone to accept incoming calls.
Use the phone to text rather than talk.


Only occurs at extremely high speeds.
Can occur at speeds as slow as 30 mph.
Happens most frequently when tire pressure is too high.
Happens most frequently when tires have good tread.
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