CDL COMBINATION PRACTICE TEST (SC)
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Drivers who want to drive combination vehicles must pass the combination vehicles test. The South Carolina CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the South Carolina CDL Manual. Take this practice test now to prepare for the actual SC CDL combination test!
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1.
To avoid rollovers, you should drive slowly:
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around corners.
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off ramps.
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on ramps.
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All of the above.
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2.
Which of the following is NOT part of the procedure to stop a trailer skid?
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Releasing the brakes
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Not using the hand brake
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Recognizing the skid
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Using the trailer hand brake to get traction back
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3.
Dollies with ABS are required to have a malfunction lamp:
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on the rear.
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on the front.
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on the right side.
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on the left side.
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4.
Combination vehicles usually require _________ single commercial vehicles.
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the same level of skill as
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less driving skill than
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more driving skill than
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None of the above.
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5.
If the drive wheels begin to spin when accelerating, you should:
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continue to accelerate.
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set the parking brake.
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brake gently.
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take your foot off the accelerator.
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6.
If you get stuck on railroad tracks, you should:
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have a helper push your vehicle.
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get out of the vehicle and away from the tracks.
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stay in the vehicle and call for help.
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check the engine compartment quickly.
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7.
To prevent rollover, you should:
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drive slowly around on ramps and off ramps.
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go slowly around turns.
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keep the cargo as close to the ground as possible.
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All of the above.
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8.
Overloading can have negative effects on:
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steering.
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braking.
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speed control.
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All of the above.
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9.
The crack-the-whip effect:
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the ends of some vehicles to drag.
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can cause problems for drivers coming toward you.
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can turn the trailer over.
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can cause a vehicle to tilt.
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10.
Emergency brakes are:
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not required on doubles.
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not required on buses.
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required on all vehicles.
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not required on commercial vehicles with air brakes.
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SC CDL Combination Test
| Number of questions: | 20 |
| Correct answers to pass: | 16 |
| Passing score: | 80% |
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