Free South Carolina CDL Combination Vehicles Practice Test 2023

You have to pass the South Carolina CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good SC CDL Practice Test source for your coming CDL test? You are in the right place. Our practice test is a great resource for beginners. The test is designed for you to have exactly the experience of the exam as you will be more familiar with both the test format and the subject. Our CDL practice test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official SC CDL Manual so you can be sure that the information in our test is accurate and relevant to your examination. In addition, each question has a detailed explanation so that it is very useful for you to learn from your mistakes. Preparing well before test day with questions and content that we cover. Start with our Free South Carolina CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2021 SC commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
SC CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
You should not back a tractor under a trailer until the air system is:
2.
The air lines on a combination vehicle are often colored to prevent them from mixing up. The emergency line is _____, the service line is _________.
3.
Hose couplers are also referred to as:
4.
When connecting the glad hands, press the two seals with the couplers together at what degree to each other?
5.
There are two things that a driver can do to prevent a rollover. They are: (1) keep the cargo as close to the ground as possible and (2):
6.
Rearward amplification is a major cause of:
7.
Before coupling or uncoupling, the trailer wheels should always be:
8.
When driving a combination vehicle with multiple trailers or dollies, all air shut-off valves except the last one at the back must be:
9.
When pulling trailers:
10.
When you notice that your trailer has lost traction and is going into a skid, you should:
11.
If the wheels of the trailer lock up and the trailer swings around, it could cause a:
12.
Trailers will have an ABS malfunction lamp:
13.
How should you test the tractor-semitrailer connection for security?
14.
The best and earliest way to recognize that your trailer has started to skid is:
15.
Crack-the-whip effect occurs when:
16.
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
17.
When uncoupling the trailer, after you shut off the trailer air supply and lock the trailer brakes, you should:
18.
What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
19.
The fifth wheel locking lever is not locked after the jaws close around the kingpin. This means that:
20.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer: