CDL PRACTICE TEST (SC) - GENERAL KNOWLEDGE TEST
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The CDL general knowledge test is required to be taken by all CDL applicants. The South Carolina CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the South Carolina CDL Manual.
All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual SC general knowledge test!
To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
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1.
Driving without a CDL, or with a suspended CDL, incurs:
a large fine.
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prison time.
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a civil penalty or, in aggravated cases, criminal penalties.
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All of the above.
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2.
If you're feeling tired while driving you should:
stop driving and get some rest.
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eat something.
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increase your speed to get to your destination quicker.
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drink coffee.
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3.
Total stopping distance equals:
Perception distance + reaction distance + braking distance
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Perception distance + braking distance
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Braking distance + viewing distance
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Reaction distance - following distance + braking distance
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4.
ABS will:
shorten your stopping distance.
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increase your average speed.
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not give you more control over the vehicle during braking.
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not change your normal braking capability.
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5.
It is important to shift gears correctly to keep:
control of the vehicle.
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the engine cool.
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the engine oil flowing.
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the engine warm.
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6.
Brake lag is:
the time required for the air brakes to work after the brake pedal is pushed.
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the distance your vehicle will travel, in ideal conditions, while you are braking.
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the amount of air pressure required to stop the vehicle.
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the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
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7.
Obstacles on the roadway that appear to the harmless:
should be driven over.
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can be dangerous.
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never contain material capable of causing damage.
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None of the above.
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8.
You should NOT use the parking brakes if:
the brakes are very hot.
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the brakes are too dry.
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the brakes are cold.
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All of the above.
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9.
What is a hazard?
Any road condition or other road user that is a possible danger.
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The driver is uncertain about taking the off ramp.
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Something you must stop for.
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The most common cause of hydroplaning.
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10.
Before entering an intersection, make sure that:
there's enough room to get at least halfway across.
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accelerate smoothly and change gears as necessary.
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That there is enough room for the rear of your vehicle to clear the stop line on your side.
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there is sufficient space to clear it.
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CDL Knowledge Test SC
Number of questions: | 50 |
Correct answers to pass: | 40 |
Passing score: | 80% |
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