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
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1.
One way to prevent hydroplaning is to:
Ensure tires have good tread depth
Under-inflate the tires
Drive faster than usual
2.
Over-the-counter medication:
Poses no threat to a driver
Are not covered under driving under the influence law
Does not impair a person
Can affect a person’s ability to drive safely
3.
When starting the vehicle as part of the pre-trip inspection, the coolant temperature should:
Decrease
Rise slowly
Hold steady
Jump quickly
4.
In slippery conditions, a driver should:
Make turns as quickly as possible
Refrain from passing slower vehicles
Stop quickly
5.
When taking the on-road driving test, you must do all of the following except:
Wear your safety belt
Obey all traffic signs
Complete the test without an accident
Buy the test administrator something to drink
6.
What is a danger of rolling backward when you start to accelerate?
The transmission may be damaged
The truck is not made to go backwards
You may hit a vehicle behind you
You may lose your position in traffic
7.
A pre-trip inspection should be done:
Differently each time, so you emphasize different items
The same way each time, so you are less likely to forget something
Once in a while
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