Air Brakes #2
Air Brakes Endorsement Test | Kentucky 2025 #2 Page 3 of 4
Train for FREE online with our Kentucky 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 KY Class A/Class B driver license in 2025, 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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13 . 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.
14 . Failing to drain air tanks could result in:
In an air brake system, the air tanks must be periodically drained to remove accumulations of water and compressor oil. If water is not removed, it could freeze in cold weather and cause brake failure.
15 . What is often found in compressed air?
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. Tanks must be drained regularly to remove this build-up.
16 . The rods in S-cam brakes move the slack adjusters when air pressure is added to the brake chambers. This air pressure is added to the chambers when the driver:
When pressing the brake pedal in a vehicle with S-cam brakes, air will enter the brake chambers. The added air pressure will push out the rods and move slack adjusters, twisting the brake camshafts.
17 . Brakes can get out of adjustment quickly, especially:
Brakes are particularly prone to getting out of adjustment if they are hot. Be sure to routinely check the adjustment of your brakes. For a vehicle to be safely controlled, all brakes must be properly functioning and adjusted.
18 . When operating a vehicle with a dual air brake system, the driver should:
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems. Watch the air pressure gauges to monitor the pressure levels.
2025 Kentucky | Frequently Asked Questions
To get a CDL Hazmat endorsement in Kentucky, you must first have a valid Commercial Driver's License (CDL). Then, pass the Hazardous Materials Endorsement Knowledge Test. After passing, you'll need to complete a federal security threat assessment application through the Transportation Security Administration (TSA), including fingerprinting and a background check. Once cleared, your Hazmat endorsement will be added to your CDL.
To obtain a CDL Hazmat license, you must first have a valid Commercial Driver's License (CDL). You must pass the Hazardous Materials Endorsement Knowledge Test. Additionally, you must complete a federal security threat assessment application through the Transportation Security Administration (TSA), which includes fingerprinting and a background check. You must also be at least 21 years old.
When applying for a CDL Hazmat endorsement, you'll need to provide proof of U.S. citizenship or lawful permanent residency (like a birth certificate or green card), a valid CDL, and proof of state residency. You will also need to complete the Hazardous Materials Endorsement application and pass the TSA's security threat assessment, which includes fingerprinting and a background check.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test is known as the Hazardous Materials Endorsement Knowledge Test. It covers topics such as how to recognize hazardous materials, how to safely load and unload such materials, and what to do in case of an emergency situation.
The CDL Hazmat endorsement written test covers a range of topics related to hazardous materials. These include identifying different types of hazardous materials, understanding Hazmat placards and labels, packing and loading procedures, emergency response, and safety regulations. It also tests knowledge on transporting specific types of hazardous materials. Studying the Hazmat section in the CDL Manual is crucial for preparation.
Yes, there are extra charges associated with acquiring a CDL Hazmat endorsement in Kentucky. In addition to the standard CDL licensing fees, applicants must pay for a federal background check and fingerprinting. The exact amount may vary, so it's recommended to check the current fees with the Kentucky Transportation Cabinet or the agency administering the endorsement.
Yes, background checks and security clearances are mandatory for the CDL Hazmat endorsement. This is to ensure that drivers are responsible and trustworthy to handle hazardous materials. The Transportation Security Administration (TSA) conducts a federal background check, which includes checking criminal, immigration, and FBI records.
Yes, specialized training is required for the CDL Hazmat endorsement. You'll need to pass the Hazardous Materials Endorsement Knowledge Test. Additionally, certification involves a federal security threat assessment and fingerprinting for a background check. The process ensures drivers are equipped with the necessary knowledge and are safe to transport hazardous materials.
No, you cannot transport hazardous materials without a valid CDL Hazmat endorsement. In Kentucky, like in all other states, federal law mandates that drivers transporting hazardous materials must hold a CDL with a Hazmat endorsement. Driving without this endorsement can lead to serious penalties including fines and disqualification.
Yes, you can add the CDL Hazmat endorsement to your current CDL license. You don't need to apply for a new CDL. However, you must pass the Hazmat knowledge test, provide proof of U.S. citizenship or lawful permanent residency, and pass a TSA background check to add the endorsement.