South Carolina CDL Practice Test: Class A - Test 7 2022

Based on 2022 SC CDL Handbook
Number of questions: 30
Passing score: 80%
Acceptable number of errors: 6

Instruction: When applying for this license, applicants must pass a 50-question test. And applicants must score 80% to pass the test. The following questions are based on the details provided in the South Carolina Commercial Driver Handbook. Endorsements that may be used with a Class A CDL include Hazardous Materials, Passenger, Double and Triples, HazMat and Tanker, Air Brakes and School bus. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at South Carolina DMV locations.

2. The emergency brakes will come on __________.
A
Only during the winter.
B
Whenever air pressure in the emergency line is lost.
C
When water and oil are expelled for the air tank.
D
If the driver honks the horn.
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