Combination #2
Combination Vehicles Practice Test | Kentucky 2025 #2 Page 2 of 3
Train for FREE online with our Kentucky CDL combination vehicle 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 combination 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 DMV requirements for issuing a combination license may vary from state to state.
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8 . Shut-off valves:
Shut-off valves are used in air supply lines to control the passage of air from one trailer to another. The rear shut-off valve should always be closed to prevent air from leaving the braking system.
9 . When driving a vehicle equipped with an Anti-Lock Braking System (ABS), brakes should be applied:
When driving a vehicle with ABS, you should brake in the same manner as you would in a vehicle without ABS.
10 . If you are backing and the trailer begins to drift off-course, the driver should:
If your trailer begins to drift while you are backing, you should correct the drift immediately by turning the top of the steering wheel in the direction of the drift.
11 . Keeping cargo centered on a rig can:
A rollover is more likely if cargo is unevenly loaded in a rig. To help prevent a dangerous rollover, it is important to keep a load as centered on the rig as possible.
12 . Keeping cargo low can:
Rollovers can happen when a combination vehicle is turned too quickly. To help prevent the risk of rollover, it is important to keep the vehicle's center of gravity low by loading cargo as close to the ground as possible.
13 . The tractor protection valve:
A tractor protection valve keeps air in a tractor or truck air brake system should the trailer break away or develop a bad leak. The valve will close automatically if the pressure drops to an unsafe level.
14 . Trailers with low underneath clearance can present challenges when driving over:
Railroad-highway crossings may be difficult to cross when pulling a trailer with a low underneath clearance. In particular, both low-slung units and single-axle tractors pulling long trailers are especially challenging to drive over raised crossings.
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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.
