FREE Air Brakes Endorsement Test Online | South Carolina 2023
Train for FREE online with our South Carolina CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a SC Class A/Class B driver license in 2021, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
1 . Water and compressor oil are usually found in the compressed air within an air brake system. Water and compressor oil:
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.
2 . To use the stab braking method, you should:
The stab braking method for emergency stops involves fully applying the brakes until they lock up. The brakes are then released until the wheels start rolling, and then the process is repeated.
3 . If the low pressure warning light comes on while you are driving:
When driving a vehicle with air brakes, if the low air pressure warning light comes on, it is important for you to stop and safely park your vehicle as soon as possible. There may be a leak in the system. Controlled braking will remain possible only as long as there is enough air left in the tanks.
4 . To use the stab braking method in an emergency situation, you should:
The stab braking method for emergency stops involves fully applying the brakes until they lock up. The brakes are then released until the wheels start rolling, then the process is repeated.
5 . What kind of force must emergency brakes use?
Because air pressure can eventually leak away, the emergency brakes in an air brake system must be held on by mechanical force.
6 . An air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately ____ to come to a complete stop.
A vehicle's total stopping distance is made up of perception distance, reaction distance, brake lag distance, and braking distance. With all of these factors included, an air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately 450 feet to come to a complete stop.
2023 South Carolina | Frequently Asked Questions
All CDL applicants are required to take the CDL general knowledge test. The CDL test in South Carolina consists of 50 questions. You must correctly answer at least 40 questions to pass (80 percent ). The general knowledge exam covers the contents of the CDL Manual for South Carolina.
In South Carolina, commercial driver's licenses are valid for five years. When you initially take your CDL driving tests, there are no costs to pay.
The state of South Carolina depends on truck drivers to keep the state functioning, and the greatest career for a truck driver in the state is one with the fewest restrictions, such as the ability to drive a truck with or without air brakes.
A CDL is required for large vehicles such as tractor-trailers, buses, and occasionally RVs. These licenses are sometimes referred to as "Class A" licenses. Driving a Class A RV differs significantly from driving a vehicle, van, or even a smaller RV.
Trucks with a GVWR (Gross Vehicle Weight Rating) of 26000 pounds or less are the largest you may drive without a CDL (Commercial Driver's License), often known as non CDL trucks.
