South Carolina CDL Permit Test - Class B

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.
You have made error so far
Passing grade —
10 or fewer errors
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1.
When conducting a vehicle inspection, you will need to identify all of the following except:
Power steering belt
Water compressor belt
Alternator belt
2.
Bent lock rings:
acceptable
Are not a concern in dry weather
Are dangerous
Can lengthen tire life
3.
How does doubling your speed from 20 mph to 40 mph affect braking distance?
It stays about the same
It increases slightly
It quadruples
4.
What is the maximum amount of play in a 20-inch steering wheel?
ΒΌ inch
2 inches
10 inches
5.
Wheel rims that have been welded should:
Be painted
Be placed in the rear
Not be used
6.
Which of the following is not another name for convex mirrors?
Fisheye mirrors
Spot mirrors
Bugeye mirrors
Flat side mirrors
7.
When making tight maneuvers, it is encouraged to:
Open your door for a better look
Use the mirrors
Flash your headilghts
Open the cargo door
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