Air Brakes #1
Air Brakes Endorsement Test | Kentucky 2025 #1
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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1 . An alcohol evaporator is especially important:
Some air brake systems contain an alcohol evaporator. This evaporator introduces alcohol into the system to help prevent ice from forming in cold weather.
2 . A safety valve is set to open at ____ pounds per square inch (psi).
The safety valve protects air tanks and the rest of an air brake system from accumulating too much air pressure. The safety valve is usually set to open at 150 psi.
3 . 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.
4 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A double combination vehicle should have a leakage rate no higher than 4 psi in a minute during an applied leakage test.
5 . 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.
6 . A driver can rely on front wheel braking to work:
Front wheel braking is effective under all road conditions. It is unlikely that you will experience a front wheel skid, even on ice.
2025 Kentucky | Frequently Asked Questions
A CDL Class A license in Kentucky allows drivers to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 lbs or more, provided the towed vehicle is heavier than 10,000 lbs. This typically includes tractor-trailers, truck and trailer combinations, flatbeds, livestock carriers, and tank vehicles.
A Class A CDL license in Kentucky permits the operation of vehicles such as tractor-trailers, truck and trailer combinations, tanker vehicles, livestock carriers, and flatbeds. Essentially, it allows you to drive any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 lbs or more where the towed vehicle is over 10,000 lbs.
To obtain a Class A CDL license in Kentucky, applicants must be at least 18 years old for intrastate driving and 21 for interstate. They must pass a vision test, hold a regular driver's license, complete a CDL General Knowledge test and any relevant endorsement tests. A skills test in the vehicle type that the driver's license will be issued for is also required.
In Kentucky, you must be at least 18 years old to qualify for a Class A Commercial Driver's License (CDL) for intrastate driving (within Kentucky only). However, to drive across state lines or handle hazardous materials, you must be at least 21 years old.
Endorsements are not required for a Class A CDL license, but they can expand your driving capabilities. For example, a Hazardous Materials (H) endorsement allows you to haul hazardous materials, while a Tank Vehicle (N) endorsement lets you drive tank vehicles. Obtaining these endorsements requires additional knowledge and skills tests.
The Class A CDL skills test in Kentucky encompasses three parts: a vehicle inspection test, a basic controls test, and a road test. The vehicle inspection test checks your ability to assess the safety of your vehicle. The basic controls test evaluates your ability to maneuver and control the vehicle. The road test assesses your on-road driving skills.
Yes, Class A CDL license holders in Kentucky may face limitations based on their specific endorsements or restrictions. For instance, if you lack a passenger or school bus endorsement, you're prohibited from driving those vehicles. Also, if you have an air brake restriction, you cannot operate vehicles with air brakes. Other restrictions may apply based on medical evaluations or driving tests.
In Kentucky, the written Class A CDL test is primarily administered in English. However, some locations may offer the test in Spanish. It's important to note that all drivers must understand English to a degree that allows them to communicate with officials and read road signs, as per federal regulations.
Yes, you can request accommodations for the Class A CDL written test in Kentucky if you have a disability. Contact the Kentucky Division of Driver Licensing and provide documentation of your disability. They will guide you through the process to ensure your testing environment meets your needs. Accommodations may include extra time, a separate room, or assistive technology.
Yes, if you fail the Class A CDL written test in Kentucky, you can retake it. There is a waiting period of one day before you can try again. You will need to pay the testing fee each time. It's recommended to study the CDL manual thoroughly before your next attempt to increase your chances of passing.