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.
You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?
2.
The best drivers are those who watch and prepare for hazards. This is called _________ driving.
3.
Which of these statements about stopping distance and speed is true?
4.
If you are stopped at a roadside rest area and found to have a BAC (Blood Alcohol Concentration) of 0.02 you will:
5.
When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the rear half of the load run?
6.
When a driver stops and reverses direction to get a better position during the driving exam, it is considered a(n):
7.
Which of these is NOT a danger when an automatic transmission is forced into a low gear at a high speed?
8.
The purpose of the retarders is to:
9.
You are driving in an area with few streetlights, if you cannot see well with your headlights, which of the actions may help:
10.
Which of these is a good thing to do when driving at night?
11.
Who is responsible for ensuring that the vehicles, anchor points and other securement components are in good working order?
12.
Using radar detectors in commercial vehicles:
13.
You should be prepared to the examiner:
14.
Based on the following information, how much fuel can you legally add while remaining legal on the drive axles?

Percentage of fuel weight to drive axles: 25%

Weight Before Fueling: Steer: 11,275, drives: 33,800, gross: 77,420

15.
If your vehicle catches fire while you are driving, you should:
16.
Which of the following are not a primary factor affecting weight distribution across the axles?
17.
A left-hand turn should end:
18.
Cargo is contained when:
19.
What is the 8 day / 70 hour on duty limit?
20.
When driving through the work zone you should:
21.
Specific securement methods are required for boulders that:
22.
You weigh the truck immediately before and after fueling. Based on the following, determine what percentage of the weight goes to each set of axles:

Before fueling:

steer: 11,100, drives: 32,600, gross: 71,400

After fueling:

steer:11,850, drives: 32,850, gross: 72,400

23.
Gross combination weight (GCW) is:
24.
.5g is equal to what?
25.
How does the weight of the vehicle affect stopping distance?
26.
What three distances build up the total stopping distance of your truck or bus?
27.
Extra care is needed to keep your vehicle centered in your lane because commercial vehicles:
28.
An anchor point is defined as:
29.
A combined Tank vehicle & hazardous material endorsement will be designated with what letter on the CDL?
30.
In case of a fire in the cargo area of a van or box trailer, you should:
31.
A dunnage bag is:
32.
Which of these is not a type of retarder?
33.
To protect the area after an accident, steps you should take include:
34.
In Oregon, the maximum weight on the steer axle is listed as 600 pounds per inch of tire tread width up to 20,000 pounds. Your steer tires have a load rating of 6,150 pounds each and are 10 inches wide. What is the maximum legal weight your steer axle can carry in Oregon?
35.
How many anchor points should be used to secure an intermodal container on a chassis vehicle?
36.
You are required to inspect your truck within how many miles after beginning the trip?
37.
Vehicles should be equipped with all of the following emergency equipment except:
38.
Containerized loads:
39.
Using the following numbers, what would be the final result if you moved the 5th wheel back one hole?

steer axle: 12,300 pounds
drive axles: 33,100 pounds
Weight transfer: 500 pounds per hole
40.
The most common cause of skids is:
41.
When securing flattened or crushed cars on a vehicle with containment on 2 sides, how many tiedowns, at minimum, are required?
42.
Convex (curved) mirrors:
43.
You weigh the truck immediately before and after fueling. Based on the following, determine what percentage of the weight goes to each set of axles.

Before fueling:

steer: 11,450, drives: 33,100, gross: 76,700

After fueling:

steer:11,850, drives: 33,300, gross: 77,300

44.
What is the minimum number of tiedowns to use on a load 4ft 7in long, and weighing 1,237 lbs?
45.
What is the minimum WLL of a tiedown used to secure logs?
46.
Which of these is NOT a good rule to follow when caring for injured persons at an accident scene?
47.
Among other hazards, drivers should be on the lookout for slow or confused drivers, children, accidents, and:
48.
If you are able to exert 200 pounds of force against an object but you are only exerting 50 pounds of force to do so, what method are you applying to make this happen?
49.
In the following picture, what are axles 4 and 5 commonly referred to as?

50.
According to the general rule, for how much space should you leave in front of your vehicle at speeds below 40 mph?