South Dakota DMV CDL Doubles / Triples Quick Practice Test

South Dakota DMV CDL Doubles / Triples Quick Practice Test For 2024

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. 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.

2. A burning tire should be:

Cooled with water.
Fanned with a blanket.
Cut up with an axe.
Covered with a tarp.

3. Doubles and triples:

Turn easily due to their centers of gravity.
Are more difficult to turn than smaller commercial vehicles.
Should never be turned.
Always have the right-of-way.

4. The best way to recognize that your trailer has started to skid is by:

Seeing other drivers' faces.
Checking the trailer in your mirrors.
Feeling the trailer move.

5. What do anti-lock brakes do?

Help a driver avoid wheel lockup
Lock up the front wheels
Prevent a vehicle from accelerating while traveling uphill
Prevent a vehicle from accelerating while traveling downhill

6. When the wheels of a trailer lock up:

The trailer will stay straight.
The trailer tends to swing around.
The cab will swing, but the trailer will stay straight.
They will likely go flat.

7. The trailer hand valve should be used:

To test the trailer brakes.
To check the connection between the trailer and tractor.
To accelerate.

8. Rolling backward when beginning to accelerate is dangerous because:

The transmission may be damaged.
The truck is not made to go backwards.
You may hit a vehicle behind you.

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