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Any driver, regardless of the vehicle Class, who wants to haul hazardous materials, must add an “H” endorsement to their CDL. In order to obtain the Hazmat endorsement drivers are required to pass a Transportation Security Administration background check and a knowledge test. The South Carolina hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The SC CDL hazmat test covers the information found in the South Carolina CDL Manual. Study the chapter covering hazardous materials to learn how to recognize, handle, and transport Hazmat, then take this practice test to prepare for your exam!
1. If HazMat is spilling from your vehicle while you are driving, you should:
get out of the vehicle and try to identify the source of the leak by smell.
not move your vehicle any more than safety requires.
continue driving in order to find a phone booth.
continue driving in order to find a truck stop.
2. If your vehicle has a breakdown or accident while carrying explosives, what should you do?
Do not allow smoking or open fire near the vehicle.
Warn others of the danger.
If there is a fire, warn everyone of the danger of explosion.
All of the above.
3. Which of the following hazard classes should NOT be placed into a temperature-controlled trailer?
Classes 1, 2.1, and 3
Classes 1, 4, and 5
Classes 1, 3, and 5.1
Classes 1, 3, and 4
4. If radioactive material is involved in a leak or broken package:
immediately contact the fire department.
clean the vehicle without touching the radioactive material.
do not touch the leaking package and drive to the nearest service station.
do not use the vehicle until it is cleaned.
5. If your placarded trailer has dual tires, you should check the tires:
once every 3 months.
once a week.
at the beginning of each trip and each time the vehicle is parked.
once every 500 miles.
6. Confused drivers may:
stop without warning.
change direction suddenly.
change lanes for no apparent reason.
All of the above.
7. On front tires, tread should be at least:
4/32 inch
4/16 inch
1/16 inch
2/32 inch
8. Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
The weight of a cargo
Repaving of the road
9. If the vehicle ahead of you is smaller than yours:
it will usually take longer to stop.
it can probably stop faster than you can.
it will take the same amount of time to stop.
All of the above.
10. Overloading can have bad effects on all of the following except:
Speed control
Exhaust system
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Hazmat CDL Test (SC)

Number of questions: 30
Correct answers to pass:24
Passing score:80%
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