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South Carolina CDL Practice Test: Class A - Test 4 2018

(From the 2018 South Carolina CDL Handbook)
Number of tests: 4
Number of questions: 30
Passing score: 80

Directions: 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.

You have made 2 errors so far.
1. The _______ can be used to slow the vehicle while you are driving down a hill.
  • none of the above

  • decreasing the distance needed to stop the vehicle.

  • avoiding spin-outs.

  • directing the car where the driver wants it to go.

2. Why is rough acceleration ill-advised when pulling a trailer?
  • No right turn warning.

  • X intersection ahead warning sign.

  • Railroad crossing ahead warning sign.

  • Advance warning of a cross intersection.

3. For what offense are you able to bypass a commercial motor vehicle disqualification?
  • 5 to 10 seconds

  • 10 to 15 seconds

  • 15 to 20 seconds

4. When you are transporting cargo, you should inspect your cargo within the first ___ miles.
  • Fluctuate your speed to keep alert

  • Drive slower than the flow of traffic

  • Drive with the flow of traffic

  • Drive faster than the flow of traffic

5. What is a front brake limiting valve?
  • Should wait for the first two vehicles to pass, then drive into the lane.

  • Should drive slower than other traffic for 200 feet.

  • Need a large enough gap to get up to the speed of traffic.

6. Where is the braking mechanism located?
  • To stop at the curb before crossing the street

  • To run out in front of you without looking

  • Not to cross unless they are with an adult

  • To know when it is safe to cross