MS CDL DOUBLES TRIPLES TEST - PRACTICE TEST
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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The Mississippi doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The MS CDL doubles triples test covers the following sections of the Mississippi CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this MS CDL practice test now to prepare for the actual test!
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1.
Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
50 psi
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100 psi
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25 psi
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75 psi
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2.
To reduce the chance of rollover, you should:
put the lightest parts of the cargo under the heaviest parts.
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distributed the cargo as low as possible inside the trailer.
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place the cargo as high as possible inside the trailer.
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None of the above.
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3.
Which of the following statements about backing heavy vehicles is true?
The helper should stand where you cannot see the helper.
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Back to the right side so that you can see better.
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You should avoid backing whenever you can.
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Always back as quickly as possible.
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4.
When driving a double or triple, you should:
decrease your following distance.
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increase your following distance.
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drive in the left lane whenever possible.
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drive with emergency flashers on.
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5.
What is Gross Vehicle Weight?
The total weight of a single vehicle, including its load
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The total weight of a single vehicle, excluding its load
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The total weight of the cargo
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The total weight of a combination of vehicles excluding the load
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6.
You are driving a modern truck with a manual transmission. When going down a hill you should usually:
downshift after your
speed has already built up.
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use the same gear you would use to go up the hill.
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use a lower gear than would be required to go up the hill.
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shift into neutral and coast.
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7.
The trailer hand valve should:
be used in driving.
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never be used to test the trailer brakes.
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never be used for parking.
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All of the above.
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8.
When your vehicle starts to skid, you must take action to:
accelerate and countersteer.
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use controlled braking.
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restore traction to the tires.
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use stab braking.
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9.
Warnings on low bridges or underpasses:
are often posted, but sometimes they are not.
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are always posted.
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must be posted.
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None of the above.
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10.
Cargo should be properly covered:
to block your view or someone else’s.
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to protect people from spilled cargo.
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to protect the weather from the cargo.
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All of the above.
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MS Doubles Triples Test
Number of questions: | 20 |
Correct answers to pass: | 16 |
Passing score: | 80% |
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