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.
A vehicle is loaded with very little weight on the drive axle. What may happen?
2.
Which of these is the best general rule for night driving?
3.
Sometimes you need to leave a road to avoid a hazard or emergency. When you do, you should keep in mind, that:
4.
A hazard:
5.
The cargo securement standard applies to commercial vehicles weighing more than:
6.
When the hydraulic brakes fail while you are driving, the system will not build up pressure and the brake pedal will feel spongy or go to the floor. What should you do?
7.
Which of these is not a brake check you normally do during your walk-around inspection?
8.
Which of these is true about tires and hot weather?
9.
Besides prescription drugs verified by a doctor as safe for driving, what other drugs are acceptable while driving?
10.
When driving in cold weather your tire tread should:
11.
If you jam on the brakes and the wheels lock up and skid:
12.
How many tiedowns are required on a stack of shortwood loaded crosswise?
13.
How many on duty hours are remaining after the following has been logged (use a scratch sheet of paper if you need to):
- On duty/not driving: 3 hours
- Driving: 4 hours
- Sleeper berth: 8 hours
- Driving: 7 hours
- Off duty: 2 hours
14.
Why should drivers always be looking for hazards?
15.
California allows 20,000 pounds maximum on the steer axle. The tread width of your tires is 11 inches, and the load rating on your steer tires is 7000 pounds. How much weight can you carry on your steer axle in California?
16.
Sliding the 5th wheel will change the weight distribution almost exclusively between which sets of axles?
17.
What is a rub rail?
18.
A hazmat endorsement will be denied or canceled if:
19.
You receive a scale ticket and your drive axles are 31,700 and your trailer tandems are 35,100. Based upon a trailer with 6 inch slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and what would the final weights be?
20.
What happens if you spend 8 hours in the sleeper berth?
21.
Load securement for cargo weighing 29,650 lbs must be able to withstand upward force of how many lbs?
22.
There are two types of jackknife, they are:
23.
When securing paper rolls with eyes horizontal, which of the following should be used to secure the rear-most roll?
24.
When securing concrete pipe loaded crosswise, arrange the top tier:
25.
You receive a scale ticket and your drive axles are 32,200 and your trailer tandems are 35,100. Based upon the two most common tandem slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and in which direction?
26.
What is the minimum angle that indirect tiedowns must form with the vehicle?
27.
A waterproof sheet used to cover cargo is a:
28.
What violation has occurred at 10:00 a.m. on Day 2?
Day 1

Day 2
29.
Which of these should you NOT do in an emergency situation?
30.
In addition to preventing engine freezing, proper coolant levels help:
31.
What violations occurred in this example?
Day 1

Day 2
32.
When activated, retarders apply braking power when:
33.
'Blocking' is defined as:
34.
The road you are driving on becomes very slippery due to glare ice. Which of these is a good thing to do in such a situation?
35.
A friction mat is used to:
36.
The maximum number of pull-ups allowed during the driving exam before failure is:
37.
A key principle to remember about loading cargo is to keep the load:
38.
An outside vehicle observation will be scored every time the driver:
39.
When you see a pedestrian or bicyclist along the road you should:
40.
Which of these statements about overhead clearance is true?
41.
What is a headboard?
42.
What is the best way to determine what percentage of the weight of fuel will go to each set of axles?
43.
What does emergency braking mean?
44.
What is the maximum angle recommended for tiedowns securing cement pipe loaded crosswise, relative to the deck?
45.
What does BAC stand for?
46.
The maximum number of encroachments allowed on a particular exam exercise is:
47.
What violation has occurred at 8:00 a.m. on Day 2?
Day 1

Day 2
48.
The definition for "shortwood" identifies pieces that are no longer than:
49.
Working Load Limit (WLL)is defined as:
50.
Which log below contains at least one violation?
Day 1

Day 2