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It is difficult for the driver to see behind the trailer.
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There may be extra weight in the front of the vehicle.
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Cargo may fall out of the trailer.
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South Carolina CDL Permit Test - Knowledge Test Class B
(From the 2020 South Carolina CDL driver handbook)
| Number of questions: | 50 |
| Passing score: | 40 |
Directions:
This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the driver). To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has two, three or four possible answer choices. Test questions come from the South Carolina Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving.. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
Passing grade —
10 or fewer errors
advertising
1.
Backing with a trailer is dangerous because:
2.
How could you reduce your stress while driving?
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Drink a caffeinated beverage
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Talk on your cell phone
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Gesture at other drivers
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Listen to calming music
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3.
The parking brake should be:
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Used whenever you park the vehicle.
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Used while driving.
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Set when driving in bad weather.
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Used to stop the vehicle in normal driving.
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4.
You may be an aggressive driver if you:
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Expect delays on your drive.
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Slow down and maintain a reasonable following distance.
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Make hand gestures that could anger other drivers.
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5.
If you are driving in fog, you should not:
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Turn on the four-way flashers.
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Slow down.
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Use your high beam lights.
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6.
Rough acceleration:
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Is recommended.
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Can cause mechanical damage.
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Is required on slippery surfaces.
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7.
The driver of a commercial motor vehicle:
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Can use any cell phone while driving.
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Can only use a hands-free mobile phone while driving.
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Can only use a cell phone on rural roads.
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Can use a cell phone at night.
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