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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.
Which of the following is not another name for convex mirrors?
Fisheye mirrors
Spot mirrors
Bug-eye mirrors
Flat side mirrors
2.
Bent lock rings:
Are 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 your vehicle's braking distance?
It stays about the same.
It doubles.
It quadruples.
4.
Wheel rims that have been welded should:
Be painted.
Be placed on tires in the rear of the vehicle.
Not be used.
5.
When making tight maneuvers, you should:
Open your door for a better look.
Use your mirrors.
Flash your headlights.
Open the cargo door.
6.
During the vehicle inspection test, you must be able to adequately check all of the following, except:
The power steering belt.
The water compressor belt.
The alternator belt.
7.
The maximum amount of play that is safe on a 20-inch steering wheel is:
One-quarter of an inch.
Two inches.
10 inches.
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