Air Brakes #1
Air Brakes Endorsement Test | South Carolina 2024 #1 Page 4 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 2024, 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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19 . Front brake limiting valves were intended to:
Remove uncertainty when applying the brakes.
Some older vehicles with air brakes have front brake limiting valves. These valves were intended to reduce the risk of front wheels skidding. However, research has shown that such devices are unnecessary, so they should be left in the "normal" position.
20 . The most common type of foundation brake used is the:
P-cam disc brake.
The most common type of foundation brake is an s-cam drum brake.
21 . What does ABS do?
Prevent the brakes from being used if downshifting would be more effective
The purpose of an Anti-Lock Braking System (ABS) is to prevent wheels from locking up during hard applications of the brakes, especially on slippery surfaces.
22 . An alcohol evaporator in an air brake system:
Some air brake systems include an evaporator that introduces alcohol into the system. The alcohol can help prevent ice from forming within the system.
23 . What can happen if the air pressure gets too low in an air brake system?
The brakes will be very sensitive.
Pressing and releasing the brake pedal unnecessarily can let air out faster than the compressor can replace it, reducing the available air pressure. If the air pressure in an air brake system gets too low, the brakes will no longer work.
24 . On flat surfaces, wheel chocks:
In situations where a driver cannot use a parking brake, wheel chocks can be used to hold a parked vehicle in place on a level surface.
25 . Dollies equipped with ABS are required to have malfunction lamps located where?
On the top
A dolly equipped with an Anti-Lock Braking System (ABS) is required to have a yellow malfunction lamp located on its left side.
2024 South Carolina | Frequently Asked Questions
To obtain a CDL Hazmat endorsement in South Carolina, you must have a valid Commercial Driver's License (CDL). Then, pass the written Hazardous Materials (HazMat) test at a DMV office. You'll also need to undergo a federal background check and fingerprinting. A Transportation Security Administration (TSA) security threat assessment will be conducted before granting the endorsement.
To obtain a CDL Hazmat license, you must first hold a valid Commercial Driver's License (CDL). You should be at least 21 years old and have good driving records. You also need to pass a written Hazardous Materials (HazMat) test. Furthermore, you must pass a federal background check, fingerprinting, and Transportation Security Administration (TSA) security threat assessment.
When applying for a CDL Hazmat endorsement, you'll need to provide your current valid CDL, proof of U.S. citizenship or lawful permanent residency (like a birth certificate or green card), and proof of identity. You'll also need to complete the Hazmat endorsement application and provide fingerprints for the background check. Lastly, you must pass the written Hazmat knowledge test.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. The Hazardous Materials Endorsement Knowledge Test is designed to assess your understanding of the safe transportation of hazardous materials. The test covers topics including loading and unloading, bulk packaging, and emergency response information. It's an essential part of obtaining your Hazmat endorsement.
The written test for the CDL Hazmat endorsement covers various topics, including the identification of different hazardous materials, proper loading and unloading procedures, use of placards and labels, emergency response procedures, and understanding the Hazardous Materials Regulations. It also tests knowledge on how to safely operate a vehicle transporting hazardous materials.
Yes, there are extra charges associated with acquiring a CDL Hazmat endorsement. You will need to pay for the fingerprinting and background check, which can cost around $86.50. Additionally, there may be a fee for the knowledge test and the endorsement itself. Fees can vary, so it's best to check with your local DMV for exact amounts.
Yes, to obtain a CDL Hazmat endorsement, you must undergo a federal background check and fingerprinting. This is part of the Transportation Security Administration's (TSA) security threat assessment. The process helps ensure that hazardous materials are transported safely by checking for criminal history, immigration status, and mental health issues among other factors.
Yes, specialized training is mandatory for the CDL Hazmat endorsement. You must pass a written hazardous materials knowledge test and a TSA security threat assessment. Training typically includes understanding how to handle hazardous materials, emergency response procedures, and safety protocols. The certification is included as an endorsement on your Commercial Driver's License.
No, it's illegal to transport hazardous materials without a valid CDL Hazmat endorsement in South Carolina. The endorsement ensures that you have the necessary training and knowledge to handle and transport hazardous materials safely. Violating this can result in hefty fines, license suspension, or even criminal charges.
Yes, you can add the CDL Hazmat endorsement to your current CDL license in South Carolina. You don't need a new license, but you must pass a written test and a TSA background check. After successful completion, the Hazmat endorsement will be added to your existing CDL license.