Air Brakes #1
Air Brakes Endorsement Test | South Carolina 2026 #1 Page 2 of 4
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 2026, 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.
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7 . Emergency brakes are:
Only required when transporting hazardous materials.
All trucks, truck tractors, and buses must be equipped with emergency brakes and parking brakes.
8 . When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:
An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.
9 . What color light indicates a vehicle's ABS is not working?
On vehicles with Anti-Lock Braking Systems (ABS), yellow malfunction lamps alert the driver to ABS malfunction.
10 . The parking brake should be:
Removed.
The parking brake in a vehicle with air brakes should be used every time the vehicle is parked.
11 . What do the two systems of a dual air brake system share?
Both systems in a dual air brake systems share a single air compressor. If the air compressor is damaged, neither system will be able to operate properly.
12 . Why do large vehicles use air brakes?
Air is free.
Air brakes are an effective and safe way of stopping large and heavy vehicles, as long as they are maintained and used properly.
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2026 South Carolina | Frequently Asked Questions
To acquire a CDL Tank endorsement in South Carolina, you must first have a Commercial Driver's License (CDL). After that, you need to pass the Tank Vehicle endorsement test at a DMV office. This test covers the knowledge required to safely operate a tank vehicle, including inspecting tanks, handling bulk tanks, and driving tank vehicles.
Obtaining a CDL Tank license in South Carolina involves having a valid Commercial Driver's License (CDL) first. You must then study the Tank Vehicles section in the SC Commercial Driver's Manual. Afterward, schedule and pass the tank vehicle endorsement test at a SC DMV office. Once passed, you will receive your Tank endorsement to your CDL.
While South Carolina doesn't specifically require training or experience to get a CDL Tank endorsement, it's highly recommended. Knowledge and understanding of handling and operating tank vehicles are crucial for passing the endorsement test. Many applicants opt for professional training courses to prepare for the test and gain practical experience.
Yes, in South Carolina, you need to pass the Tank Vehicle endorsement test to get a CDL Tank endorsement. This written exam tests your knowledge about the safe operation of tank vehicles, including inspecting tanks, handling bulk tanks, and driving tank vehicles. It's an additional test beyond the general CDL exam.
The written test for the CDL Tank endorsement in South Carolina covers various topics related to tank vehicles. These include inspecting tank vehicles, understanding weight distribution and high center of gravity, handling liquid surges, driving on slippery surfaces, and emergency handling such as skid control and recovery.
The CDL Tank endorsement assessment primarily focuses on knowledge rather than specific driving skills or maneuvers. It evaluates your understanding of inspecting tank vehicles, safe driving practices, handling characteristics of tankers, and details about bulk packaging and loading/unloading cargo tanks. However, safe driving and maneuvering skills are generally assessed during the CDL road test.
Yes, drivers with a CDL Tank endorsement are subject to certain limitations. They can only operate commercial tank vehicles and are required to adhere to specific safety regulations. These include weight restrictions, proper securing of cargo, and handling hazardous materials. Violation of these regulations can result in fines, license suspension, and even criminal charges.
No, it's illegal to transport liquid or gas materials in a tank vehicle without a valid CDL Tank endorsement in South Carolina. This endorsement ensures that drivers have the necessary skills and knowledge to safely handle and transport these types of materials. Violating this requirement can result in severe penalties.
Yes, the CDL Tank endorsement can be added to your current Commercial Driver's License (CDL). You don't need a fresh application. However, you must pass the Tank Vehicle endorsement knowledge test. Once you pass the test, the endorsement will be added to your existing CDL.
Yes, handling hazardous materials with a CDL Tank endorsement requires adherence to specific regulations. Drivers must pass the Hazardous Materials (HazMat) endorsement knowledge test, submit to a TSA background check, and follow safety protocols when loading, unloading, and transporting hazardous materials. Non-compliance can result in penalties.
