Knowledge Test Class A
This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has three possible answer choices. Test questions come from the Kentucky Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
Number of Question
Passing Score
36. What is reaction distance?
Explanation
Your vehicle's stopping distance can be calculated by adding together your perception distance, your reaction distance, and your vehicle's braking distance. Reaction distance is the distance traveled between the moment you mentally perceive a hazard and the moment you physically hit the brakes.
37. Some air brake systems introduce alcohol into the system to:
Explanation
Some air brake systems contain an alcohol evaporator. An evaporator introduces alcohol into the system to help inhibit the formation of ice in cold weather.
38. If you have an engine fire, you should:
Explanation
To keep an engine fire from spreading, you should turn off the vehicle's engine as soon as possible. Do not open the hood if you don't have to.
39. Of the following, which is the most slippery surface?
Explanation
Ice becomes wet when the weather is just warm enough to melt the ice slightly. Wet ice is much more slippery than ice that is not wet.
40. A pre-trip inspection should include:
Explanation
When examining the engine compartment during a pre-trip inspection, you should check the engine oil level, the radiator coolant level, and the condition of the hoses.
41. If the safety relief valve in the air brake system releases air:
Explanation
An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.
42. Steering wheel play should be no more than:
Explanation
A steering wheel should have no more than 10 degrees of play. This is equal to about two inches of movement at the rim of a 20-inch wheel. If there is more play than this, it may be difficult to steer.
Frequently Asked Questions
A Class A CDL (Commercial Driver's License) is a type of license required to operate a combination of vehicles with a gross combination weight rating (GCWR) of 26,001 pounds or more, provided the vehicle being towed weighs more than 10,000 pounds. In Kentucky, this includes any combination of vehicles with a total weight of 26,001 pounds or more, such as tractor-trailers.
To obtain a Class A CDL in Kentucky, you must pass a series of written and skills tests, including a pre-trip inspection, basic control skills test, and road test. You must also meet certain eligibility requirements, such as being at least 18 years old (21 years old for interstate driving), having a valid driver's license, and passing a medical examination.
It's important to note that obtaining a Class A CDL license is not an easy process and requires significant preparation and training. It's recommended that you enroll in a reputable truck driving school or training program to help you pass the necessary tests and gain the necessary driving experience.
To obtain a Class A CDL in Kentucky, you must pass a series of written and skills tests, including a pre-trip inspection, basic control skills test, and road test. You must also meet certain eligibility requirements, such as being at least 18 years old (21 years old for interstate driving), having a valid driver's license, and passing a medical examination.
It's important to note that obtaining a Class A CDL license is not an easy process and requires significant preparation and training. It's recommended that you enroll in a reputable truck driving school or training program to help you pass the necessary tests and gain the necessary driving experience.
With a Class A CDL license in Kentucky, you can operate a combination of vehicles with a gross combination weight rating (GCWR) of 26,001 pounds or more, provided the vehicle being towed weighs more than 10,000 pounds. This includes:
1. Tractor-trailers: A combination of a tractor unit and one or more trailers.
2. Truck and trailer combinations: A truck with a trailer attached that has a GCWR of 26,001 pounds or more.
3. Double and triple trailers: A combination of two or three trailers attached to the tractor unit.
4. Livestock carriers: Vehicles designed to transport live animals.
5. Tank vehicles: Vehicles designed to transport liquids or gases.
6. Flatbeds: Trucks with a flat platform for carrying goods.
7. Refrigerated trucks: Trucks with refrigeration units for transporting perishable goods.
It's important to note that you must have the appropriate endorsements on your CDL to operate certain types of vehicles, such as tank vehicles and double/triple trailers. Additionally, you may be subject to certain restrictions based on your driving record and the type of vehicle you are operating.
1. Tractor-trailers: A combination of a tractor unit and one or more trailers.
2. Truck and trailer combinations: A truck with a trailer attached that has a GCWR of 26,001 pounds or more.
3. Double and triple trailers: A combination of two or three trailers attached to the tractor unit.
4. Livestock carriers: Vehicles designed to transport live animals.
5. Tank vehicles: Vehicles designed to transport liquids or gases.
6. Flatbeds: Trucks with a flat platform for carrying goods.
7. Refrigerated trucks: Trucks with refrigeration units for transporting perishable goods.
It's important to note that you must have the appropriate endorsements on your CDL to operate certain types of vehicles, such as tank vehicles and double/triple trailers. Additionally, you may be subject to certain restrictions based on your driving record and the type of vehicle you are operating.
To obtain a Class A CDL (Commercial Driver's License) license in Kentucky, you must meet the following requirements:
1. Age: You must be at least 18 years old to obtain an intrastate CDL or at least 21 years old to obtain an interstate CDL.
2. Valid driver's license: You must hold a valid driver's license from Kentucky or another state.
3. Medical certification: You must pass a medical examination and obtain a medical certification from a licensed examiner. The medical certification is valid for up to two years, depending on your health status.
4. Knowledge and skills tests: You must pass a series of knowledge and skills tests, including a general knowledge test, air brakes test (if applicable), combination vehicles test, and pre-trip inspection test. You will also need to pass a basic control skills test and a road test.
5. Background check: You will need to undergo a background check as part of the application process.
6. Training: While not required by law, it is highly recommended that you complete a commercial driver training program before attempting to obtain your CDL.
7. Fees: There are fees associated with obtaining your CDL, including application fees, testing fees, and license fees.
It's important to note that obtaining a Class A CDL license is not an easy process and requires significant preparation and training. It's recommended that you enroll in a reputable truck driving school or training program to help you pass the necessary tests and gain the necessary driving experience.
1. Age: You must be at least 18 years old to obtain an intrastate CDL or at least 21 years old to obtain an interstate CDL.
2. Valid driver's license: You must hold a valid driver's license from Kentucky or another state.
3. Medical certification: You must pass a medical examination and obtain a medical certification from a licensed examiner. The medical certification is valid for up to two years, depending on your health status.
4. Knowledge and skills tests: You must pass a series of knowledge and skills tests, including a general knowledge test, air brakes test (if applicable), combination vehicles test, and pre-trip inspection test. You will also need to pass a basic control skills test and a road test.
5. Background check: You will need to undergo a background check as part of the application process.
6. Training: While not required by law, it is highly recommended that you complete a commercial driver training program before attempting to obtain your CDL.
7. Fees: There are fees associated with obtaining your CDL, including application fees, testing fees, and license fees.
It's important to note that obtaining a Class A CDL license is not an easy process and requires significant preparation and training. It's recommended that you enroll in a reputable truck driving school or training program to help you pass the necessary tests and gain the necessary driving experience.
To obtain a Class A CDL license in Kentucky, you must be at least 18 years old, but this license will be restricted to intrastate commerce only. This means that you can only operate commercial vehicles within the state of Kentucky.
However, if you want to operate in interstate commerce, which means you will be driving commercial vehicles across state lines, you must be at least 21 years old to obtain a Class A CDL license.
It's important to note that even if you meet the age requirement, there are other requirements that you must fulfill to obtain a CDL license, such as passing a series of knowledge and skills tests, completing a background check, and obtaining medical certification. Additionally, some employers may have their own age requirements for hiring commercial drivers.
However, if you want to operate in interstate commerce, which means you will be driving commercial vehicles across state lines, you must be at least 21 years old to obtain a Class A CDL license.
It's important to note that even if you meet the age requirement, there are other requirements that you must fulfill to obtain a CDL license, such as passing a series of knowledge and skills tests, completing a background check, and obtaining medical certification. Additionally, some employers may have their own age requirements for hiring commercial drivers.
Yes, you may need endorsements depending on the type of cargo you plan to transport with your Class A CDL license.
The two most common endorsements for a Class A CDL license are:
1. T endorsement: This endorsement is required for drivers who will be transporting double or triple trailers.
2. N endorsement: This endorsement is required for drivers who will be transporting tank vehicles that contain hazardous materials.
Other endorsements that may be required for certain types of cargo include:
1. H endorsement: This endorsement is required for drivers who will be transporting hazardous materials.
2. X endorsement: This endorsement is required for drivers who will be transporting a combination of hazardous materials and tank vehicles.
It's important to note that obtaining endorsements requires additional testing beyond the standard CDL tests, and may also require additional fees. You should check with your local DMV office or consult the Kentucky CDL Handbook to determine which endorsements you need for your intended type of cargo.
The two most common endorsements for a Class A CDL license are:
1. T endorsement: This endorsement is required for drivers who will be transporting double or triple trailers.
2. N endorsement: This endorsement is required for drivers who will be transporting tank vehicles that contain hazardous materials.
Other endorsements that may be required for certain types of cargo include:
1. H endorsement: This endorsement is required for drivers who will be transporting hazardous materials.
2. X endorsement: This endorsement is required for drivers who will be transporting a combination of hazardous materials and tank vehicles.
It's important to note that obtaining endorsements requires additional testing beyond the standard CDL tests, and may also require additional fees. You should check with your local DMV office or consult the Kentucky CDL Handbook to determine which endorsements you need for your intended type of cargo.
The Class A CDL skills test is designed to evaluate your ability to operate a commercial vehicle safely and effectively. The test consists of three parts:
1. Pre-trip Inspection: Before you start driving, you will be required to perform a pre-trip inspection of your commercial vehicle. You will need to demonstrate your knowledge of the vehicle's components and safety features, and show that you can identify any potential issues that could affect the safety of the vehicle.
2. Basic Vehicle Control: In this part of the test, you will be required to demonstrate your ability to control the commercial vehicle in various maneuvers, such as backing up, turning, and parking. You will need to show that you can operate the vehicle smoothly and safely in tight spaces.
3. On-Road Driving: Finally, you will need to demonstrate your ability to safely operate the commercial vehicle on public roads and highways. During this part of the test, you will be evaluated on your ability to make turns, change lanes, merge onto highways, drive in traffic, and navigate intersections.
The skills test is typically conducted by an authorized CDL examiner who will evaluate your performance based on a set of established criteria. To pass the skills test and obtain your CDL license, you must demonstrate that you have the necessary knowledge and skills to operate a commercial vehicle safely and effectively.
1. Pre-trip Inspection: Before you start driving, you will be required to perform a pre-trip inspection of your commercial vehicle. You will need to demonstrate your knowledge of the vehicle's components and safety features, and show that you can identify any potential issues that could affect the safety of the vehicle.
2. Basic Vehicle Control: In this part of the test, you will be required to demonstrate your ability to control the commercial vehicle in various maneuvers, such as backing up, turning, and parking. You will need to show that you can operate the vehicle smoothly and safely in tight spaces.
3. On-Road Driving: Finally, you will need to demonstrate your ability to safely operate the commercial vehicle on public roads and highways. During this part of the test, you will be evaluated on your ability to make turns, change lanes, merge onto highways, drive in traffic, and navigate intersections.
The skills test is typically conducted by an authorized CDL examiner who will evaluate your performance based on a set of established criteria. To pass the skills test and obtain your CDL license, you must demonstrate that you have the necessary knowledge and skills to operate a commercial vehicle safely and effectively.
Yes, there are some restrictions and limitations that apply to drivers with a Class A CDL license. Here are a few examples:
1. Air Brake Restriction: If you take your skills test in a vehicle without air brakes, you will receive an "L" restriction on your CDL license, which prohibits you from operating any commercial vehicle with air brakes.
2. Manual Transmission Restriction: If you take your skills test in a vehicle with an automatic transmission, you will receive an "A" restriction on your CDL license, which prohibits you from operating any commercial vehicle with a manual transmission.
3. Passenger and School Bus Restrictions: If you obtain your Class A CDL license but do not pass the required tests for passenger or school bus endorsements, you will be restricted from operating those types of vehicles.
4. Hazardous Materials Restrictions: If you do not pass the required tests for hazardous materials endorsement, you will be restricted from transporting hazardous materials.
It's important to note that these restrictions can be removed by passing additional tests or completing additional training as required by the Kentucky DMV. Additionally, some employers may have their own restrictions or requirements for drivers beyond what is mandated by the DMV.
1. Air Brake Restriction: If you take your skills test in a vehicle without air brakes, you will receive an "L" restriction on your CDL license, which prohibits you from operating any commercial vehicle with air brakes.
2. Manual Transmission Restriction: If you take your skills test in a vehicle with an automatic transmission, you will receive an "A" restriction on your CDL license, which prohibits you from operating any commercial vehicle with a manual transmission.
3. Passenger and School Bus Restrictions: If you obtain your Class A CDL license but do not pass the required tests for passenger or school bus endorsements, you will be restricted from operating those types of vehicles.
4. Hazardous Materials Restrictions: If you do not pass the required tests for hazardous materials endorsement, you will be restricted from transporting hazardous materials.
It's important to note that these restrictions can be removed by passing additional tests or completing additional training as required by the Kentucky DMV. Additionally, some employers may have their own restrictions or requirements for drivers beyond what is mandated by the DMV.
No, the Class A CDL written test must be taken in English in Kentucky. All CDL knowledge tests, including the general knowledge test, endorsement tests, and the combination vehicle test, are only available in English. This is because operating a commercial motor vehicle requires a good understanding of English, as it is the language used by traffic signs, signals, and other drivers on the road.
However, if you have difficulty reading or understanding English, you may request an oral version of the test. The oral version will be administered by an examiner who will read the questions and answer choices to you in English. You will still need to provide your answers in English.
If you need assistance with reading or understanding the test questions due to a disability, you may request accommodations such as additional time or a reader. You should contact your local Kentucky DMV office to request accommodations and to learn more about the options available to you.
However, if you have difficulty reading or understanding English, you may request an oral version of the test. The oral version will be administered by an examiner who will read the questions and answer choices to you in English. You will still need to provide your answers in English.
If you need assistance with reading or understanding the test questions due to a disability, you may request accommodations such as additional time or a reader. You should contact your local Kentucky DMV office to request accommodations and to learn more about the options available to you.
Yes, if you have a disability that affects your ability to take the Class A CDL written test, you may request accommodations. The Kentucky DMV provides reasonable accommodations to individuals with disabilities in accordance with the Americans with Disabilities Act (ADA).
Examples of accommodations that may be available include additional time to take the test, a separate testing room, a reader or scribe, or a sign language interpreter. You will need to provide documentation of your disability and the need for accommodations, such as a letter from a doctor or other healthcare provider.
To request accommodations for the Class A CDL written test, you should contact your local Kentucky DMV office and inform them of your disability and the type of accommodation you require. The DMV will review your request and provide information on how to proceed. It's important to make this request as early as possible before your scheduled test date to allow sufficient time for processing and arranging accommodations.
Examples of accommodations that may be available include additional time to take the test, a separate testing room, a reader or scribe, or a sign language interpreter. You will need to provide documentation of your disability and the need for accommodations, such as a letter from a doctor or other healthcare provider.
To request accommodations for the Class A CDL written test, you should contact your local Kentucky DMV office and inform them of your disability and the type of accommodation you require. The DMV will review your request and provide information on how to proceed. It's important to make this request as early as possible before your scheduled test date to allow sufficient time for processing and arranging accommodations.
If you fail the Class A CDL written test in Kentucky, you may retake the test. However, you will need to wait at least one business day before you can retake the test. You will also be required to pay the testing fee again.
It's important to note that if you fail a particular section of the test, such as the general knowledge section or an endorsement section, you will only need to retake that particular section. You will not need to retake the entire test.
Before retaking the test, it's a good idea to review the material and study any areas where you had difficulty. You may also want to consider taking a commercial driver's license training course or using study materials like practice tests or study guides to help prepare for the exam.
If you fail the written test three times, you will need to wait at least 30 days before taking the test again. Additionally, if you fail the test six times within a 12-month period, you will be required to wait one year before taking the test again.
It's important to note that if you fail a particular section of the test, such as the general knowledge section or an endorsement section, you will only need to retake that particular section. You will not need to retake the entire test.
Before retaking the test, it's a good idea to review the material and study any areas where you had difficulty. You may also want to consider taking a commercial driver's license training course or using study materials like practice tests or study guides to help prepare for the exam.
If you fail the written test three times, you will need to wait at least 30 days before taking the test again. Additionally, if you fail the test six times within a 12-month period, you will be required to wait one year before taking the test again.
