Free South Carolina CDL General Knowledge Practice Test 2023

You are looking for actual practice for your coming CDL test? So you have come to the right place. Our SC General Knowledge Practice Test has the same questions as the real exam which is based on the SC CDL Manual. Our CDL practice test pack covers most of the subject areas on the South Carolina General Knowledge Test such as shifting techniques, railroad crossing safety, drunk driving laws, and much more to make you become a safer driver. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, don't worry, you can take this practice test an unlimited number of times to make sure you learn all the questions. Our SC CDL Practice Test will refine your driving knowledge so you can earn your CDL and start driving on the roads. Let’s take our practice test now!

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 General Knowledge Test format:
50 questions
40 correct answers to pass
80% passing score
List of questions
1.
How do you stop a front-wheel skid?
2.
You are driving on a slippery road during the day. What does the Driver’s manual say about how much space you should keep ahead of your truck?
3.
A vertical barrier across the front of the deck of a vehicle to prevent forward movement of cargo is a:
4.
What violation has occurred on the below log?

5.
Any driver convicted of violating an out-of-service order will be disqualified for a minimum of:
6.
Special permits will be required for loads that are:
7.
Placing a phone call while driving:
8.
Which of the following systems should receive extra attention during winter weather inspection?
9.
A row of metal coils loaded with eyes lengthwise requires how many direct tiedowns over each side-by-side row or coil?
10.
When securing a load of lengthwise longwood logs weighing 42,500 lbs, what is the minimum aggregate WLL required for tiedowns? (rounded up to nearest lb)
11.
Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?
12.
When a coolant container is part of a pressurized system which of these is true?
13.
What is a 34 hour restart?
14.
By definition, what is a wedge?
15.
When loaded cement pipe over 45 inches in diameter, which pipes should be blocked, wedged, or otherwise immobilized?
16.
Why is damage to the exhaust system a danger?
17.
To prevent rolling, how many points of contact are required, at minimum, for a boulder resting on a rounded or partially rounded side?
18.
What is true about using a heater?
19.
A bulkhead is defined as:
20.
All of the following are lighting requirements for combination vehicles longer than 20 feet or wider than 80 inches except:
21.
A female housing fixed to the side or ends of a vehicle to receive a stake or peg, and may also be used as an anchor point is a:
22.
When entering or crossing traffic, observe all of the following EXCEPT:
23.
Which of the following is not true of Working Load Limit (WLL)?
24.
While exiting the vehicle for a 'look', how many points of contact must you keep with the vehicle at all times?
25.
When securing concrete pipe with a diameter of more than 45 inches loaded crosswise, how many tiedowns are required through each pipe at minimum?
26.
Drivers must inspect the securement of cargo every 150 miles or:
27.
You are driving a truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade?
28.
In cargo securement, bracing is:
29.
Specific suspension problems that drivers should look for include which of the following:
30.
Using the following numbers for your calculations, how much weight will come off your steer axle?


Miles per gallon: 7
Miles travelled: 280
Percenatage of fuel weight on steer axle: 80%
31.
Is the below example a completed 34 hour restart?
Day 1

Day 2
32.
Steering wheel play should not be more than:
33.
Your brakes can get wet when driving through heavy rain. What can happen if the brakes are applied?
34.
Timber used for dunnage must be all of the following except:
35.
Escape ramps:
36.
Which of these could be considered off duty time?
37.
In a pressurized cooling system, coolant level should be checked:
38.
Should brake adjustment be checked often?
39.
When going down a long steep downgrade you should always:
40.
When your vehicle is out of gear for more than its length, it will be scored as:
41.
During the Stop/Start maneuver, when stopped, your vehicle:
42.
When backing, all of the following are important safety rules:
43.
Which statement below accurately describes the 11 hour driving limit?
44.
An intermodal container is:
45.
When you are parked on the side of the road at night you must:
46.
If you lose pressure in hydraulic brakes, you can:
47.
Some of the serious driving errors that can be caused by alcohol include:
48.
How long does it typically take a tractor-trailer to cross a single set of railroad tracks?
49.
What is Gross Vehicle Weight Rating?
50.
Specifically prohibited in the testing area are cellphones and: