South Carolina CDL Permit Test - Class A

Number of questions: 50
Passing score: 40
Directions: This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds 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), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A 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
When trying to put out an electrical fire, water should be used.
If the low pressure light comes on while driving:
Braking will only occur if there is enough air in the tanks
You can brake 14 times before the air in the system runs out
You should continue to drive normally and check the brake system when it is convenient
Stay at least 100 feet away from other vehicles
Cargo inside a trailer:
Does not need to be secured
Should only be stacked 3 feet high
Should be secured to prevent movement
Should be loaded with the heaviest items on top of lighter items
Without engine oil:
The vehicle will get better gas mileage
The engine can be destroyed quickly
The ABS won’t work properly
The windshield wipers will not operate
Sending text messages while driving:
May be done if the messages are short.
Is encouraged.
Is permitted if you are asking a question of your employer.
Is not permitted.
Spring brakes come on:
When too much air pressure is lost.
When a control on the dashboard is activated.
When the tires have minimal tread depth.
When the brakes are noisy.
A vehicle inspection is required:
For insurance purposes
To get fuel
By state and federal law
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