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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The South Carolina doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The SC CDL doubles triples test covers the following sections of the South Carolina CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this SC CDL practice test now to prepare for the actual test!
1.
Which of the following statements about drivers fixing an engine or changing a tire is true?
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They often do not pay attention to roadway traffic.
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They usually pay attention to the danger roadway traffic is to them.
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Roadway traffic is not a danger to them.
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They must park within 5 feet of the roadway.
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2.
You should be especially alert for drunk drivers:
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around shopping areas.
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late at night.
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in the morning.
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in the early evening.
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3.
You have two tie-downs on a 15 foot load. How many more tie-downs do you need to secure cargo and keep it from shifting or falling?
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None
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Three
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Two
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One
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4.
When coupling double trailers, you can secure the second trailer by:
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setting the trailer emergency brakes.
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chocking the wheels.
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using the trailer spring brakes.
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All of the above.
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5.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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hydraulic brakes.
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GPS
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a rear backup camera.
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anti-lock brakes.
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6.
Placards are:
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a type of safety equipment.
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devices placed below a vehicle to improve traction.
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signs put inside a vehicle used to warn others of hazardous materials.
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signs placed on a vehicle to identify the hazard class of the cargo.
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7.
Another name for front-end header boards is:
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headache racks.
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cargo stopper.
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head belt.
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containerized racks.
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8.
Rims with welding repairs:
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are not safe.
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can be used for tires in the front of the vehicle.
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are acceptable only when carrying a heavy load.
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can be used for tires in the rear of the vehicle.
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9.
Fully loaded rigs:
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are just as likely to roll over as empty rigs.
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are much more likely to roll over than empty rigs.
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are less likely to roll over than empty rigs.
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None of the above.
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10.
Pre-trip inspections are:
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recommended.
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required by law
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required only for trips of more than 100 miles.
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required only for trips of more than 50 miles.
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Frequently Asked Questions
Here are the age requirements of the graduated driver's license program to obtain a class D driver's license in South Carolina:
- For a beginner's permit, you must be at least 15 years old.
- For a conditional driver’s license, you must be at least 15 but less than 16 years old and have held your permit for at least 180 days.
- For a special restricted driver’s license, you need to be at least 16 but less than 17 years old. Additionally, you must have held your beginner’s permit for at least 180 days or have a conditional license.
- For a regular driver’s license, you must have held a conditional or special restricted license for at least one year, or you must be at least 17 years old and have held a beginner’s permit for 180 days.
To take the DMV written test in South Carolina, you can visit a South Carolina DMV branch without appointment. It's important to note that permit tests are typically offered at specific hours, so contact the office you've chosen to find out when you have to go.
Make sure you've got all you need when you go to the DMV office. You must bring:
- Proof of South Carolina residency (such as school or employment records, utility bills, bank statements, etc.). For a REAL ID permit, you'll need to present two proofs of residency.
- Proof of U.S. citizenship/identity, name, and date of birth.
- Proof of Social Security Number.
If you're under 18 years old, a parent or legal guardian must sign the Consent for Minor at the DMV office, unless you are an emancipated minor or married.
To prepare for the DMV written test, read the South Carolina Driver's Handbook. Pay attention to road signs, parallel parking, turning, passing a vehicle, yielding the right of way, etc. Test your knowledge with our practice tests or sign up for Premium, which offers extra resources to get ready for your exam.
New drivers in South Carolina face specific restrictions. If you have a beginner's permit, you can drive:
- From 6 a.m. to midnight with a licensed driver who is at least 21 years old with one year or more of driving experience, seated near you.
- From midnight to 6 a.m., with any driver listed on your Consent for Minor form, seated beside you.
If you have a conditional or special restricted license:
- You can transport a maximum of two passengers under 21, unless accompanied by a licensed adult who is at least 21 (except for siblings).
- You can drive alone from 6 a.m. to 6 p.m. (8 p.m. during daylight savings time).
- You can drive between 6 p.m. (8 p.m. during daylight savings time) and midnight if accompanied by a licensed driver who is at least 21.
- You can drive from midnight to 6 a.m. with a parent/guardian.
A beginner's permit remains valid for a period of twelve months. You have the option to renew it for another year if you're eligible. The renewal process can be completed online and you are required to pay a fee. However, if the permit has been expired for more than nine months, you'll need to retake the DMV test.