Knowledge Test Class B

This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the.. Read More

This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the driver). To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Test questions come from the Illinois Commercial Drivers License Study Guide. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes, School bus and Charter.

Number of Question
Passing Score

1. When driving under wet conditions, what does a lack of spray from other vehicles indicate?

Explanation
If the road appears to be wet but the wheels of other vehicles are no longer generating spray, ice has formed on the road. Drive with extra caution when operating on wet or icy roads.

2. If transporting 30 feet of cargo on a flatbed trailer, you should use a minimum of ____ to restrain the cargo.

Explanation
When transporting cargo on a flatbed trailer, you should use at least one tie-down for every 10 feet of cargo. Any cargo, no matter how small, should be restrained by a minimum of two tie-downs.

3. If you must drive very slowly, you should:

Explanation
If you must drive slowly, you should warn drivers behind you by turning on your emergency flashers, as long as local law permits their use.

4. If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. In what condition should the belt be?

Explanation
When inspecting a vehicle with air brakes that has a belt-driven air compressor, you should check the condition and tightness of the belt. It should be in good condition.

5. If a tire fails, you should:

Explanation
Using the brakes after a tire failure could cause you to lose control of your vehicle. Unless you're about to hit something, stay off of the brake until the vehicle has slowed sufficiently.

6. In cold weather, an alcohol evaporator should be checked and filled:

Explanation
An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.

7. What is reaction distance?

Explanation
Reaction distance is the distance traveled between the moment you mentally recognize a hazard and when you physically hit the brakes.

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Frequently Asked Questions

A Class B CDL (Commercial Driver's License) license in Illinois allows a driver to operate a single vehicle with a weight of 26,001 pounds or more, or a combination of vehicles with a total weight of 26,001 pounds or more, where the towed vehicle weighs less than 10,000 pounds.

Here are the steps to obtain a Class B CDL license in Illinois:

1. Meet the eligibility requirements: You must be at least 18 years old (21 years old for interstate driving), possess a valid Illinois driver’s license, and have a clean driving record.

2. Obtain a Commercial Learner’s Permit (CLP): To obtain a CLP, you must pass a written test for the specific Class B CDL you are seeking and any endorsements you might need.

3. Complete the required training: You must complete the necessary training for your Class B CDL. This may include classroom instruction and behind-the-wheel training.

4. Pass the skills test: The skills test consists of three parts: pre-trip inspection, basic vehicle control, and on-road driving. You must pass all three parts to obtain your Class B CDL.

5. Apply for your Class B CDL: Once you pass the skills test, you can apply for your Class B CDL at any Secretary of State Facility.

6. Pay the fees: The fees for obtaining or renewing your Class B CDL vary depending on your age and endorsements.

Remember to always follow Illinois traffic laws and safety regulations when operating any commercial vehicle on the roadways.

With a Class B CDL license in Illinois, you can operate a single vehicle with a weight of 26,001 pounds or more, or a combination of vehicles with a total weight of 26,001 pounds or more, where the towed vehicle weighs less than 10,000 pounds.

Here are some examples of vehicles you can operate with a Class B CDL:

- Straight trucks (such as delivery trucks or dump trucks)
- Large buses (such as school buses or city buses)
- Segmented buses
- Box trucks
- Tow trucks
- Cement mixers
- Garbage trucks

It is important to note that if you plan to operate vehicles that require additional endorsements, such as passenger or hazardous materials endorsements, you will need to obtain those endorsements in addition to your Class B CDL.

To obtain a Class B CDL (Commercial Driver's License) license in Illinois, you must meet the following requirements:

1. Age: You must be at least 18 years old to obtain a Class B CDL license in Illinois. However, you must be at least 21 years old to operate a commercial vehicle across state lines or transport hazardous materials.

2. Valid Driver’s License: You must have a valid Illinois driver’s license.

3. Medical Certificate: You must provide a current medical certificate that meets Federal Motor Carrier Safety Administration (FMCSA) standards. This certificate must be issued by a certified medical examiner.

4. Knowledge Test: You must pass a written knowledge test for the specific Class B CDL you are seeking and any endorsements you might need.

5. Training: You must complete the necessary training for your Class B CDL, which may include classroom instruction and behind-the-wheel training.

6. Skills Test: You must pass a skills test that consists of three parts: pre-trip inspection, basic vehicle control, and on-road driving.

7. Fees: You will need to pay the appropriate fees to obtain your Class B CDL license.

In addition to these requirements, you will also need to meet any additional requirements for specific endorsements or restrictions that may apply to your desired commercial driving activities.

The minimum age requirement for obtaining a Class B CDL (Commercial Driver's License) license in Illinois is 18 years old. However, if you plan to operate a commercial vehicle across state lines or transport hazardous materials, you must be at least 21 years old to obtain a Class B CDL license.

It is important to note that some employers may have their own age requirements for commercial drivers, which may be higher than the legal minimum age. Additionally, younger drivers may face additional restrictions on their driving activities based on their age and experience level, such as limits on driving at night or transporting certain types of cargo.

You may need endorsements for your Class B CDL (Commercial Driver's License) license in Illinois, depending on the type of vehicle you plan to operate and the cargo you plan to transport.

The most common endorsements for a Class B CDL license are:

1. Passenger (P) endorsement: Required to operate a vehicle designed to transport 16 or more passengers, including the driver.

2. School Bus (S) endorsement: Required to operate a school bus.

3. Tank (N) endorsement: Required to transport liquid or gaseous materials in tanks.

4. Hazardous Materials (H) endorsement: Required to transport hazardous materials, such as flammable or explosive materials.

5. Combination Tank and Hazardous Materials (X) endorsement: Required to transport both hazardous materials and liquid or gaseous materials in tanks.

To obtain these endorsements, you must pass additional written knowledge tests and/or skills tests. You may also be required to meet additional requirements, such as background checks or specialized training.

It is important to note that some endorsements may have additional age requirements or restrictions on driving activities, so it is important to check with the Illinois Secretary of State's office or a reputable commercial driving school for more information on the specific requirements for each endorsement.

The Class B CDL (Commercial Driver's License) skills test in Illinois consists of three parts:

1. Pre-Trip Inspection: This portion of the test requires you to perform a thorough inspection of your vehicle to ensure that it is safe to operate. You will be tested on your ability to identify and explain any issues or potential problems with the vehicle, such as broken lights, fluid leaks, or tire wear.

2. Basic Vehicle Control: This portion of the test assesses your ability to control your vehicle in a variety of situations, including backing up, making turns, and parking. You will be tested on your ability to maneuver the vehicle in a controlled and safe manner.

3. Road Test: This portion of the test evaluates your ability to safely operate the vehicle in real-world driving scenarios. You will be evaluated on your ability to obey traffic laws, navigate intersections and turns, and respond appropriately to different driving situations.

In order to pass the Class B CDL skills test, you must successfully complete all three portions of the test with a passing score. The specific requirements for each portion of the test may vary based on the type of vehicle you are driving and any endorsements you are seeking. It is important to prepare thoroughly for the skills test by practicing with a licensed instructor and reviewing the Illinois Commercial Driver's License Study Guide.

Yes, there are several restrictions and limitations for drivers with a Class B CDL (Commercial Driver's License) license in Illinois. Some of the most common restrictions include:

1. Vehicle type: Drivers with a Class B CDL are restricted to operating single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a combination of vehicles with a GCWR of less than 26,001 pounds.

2. Passenger restrictions: Drivers with a Class B CDL may not transport more than 16 passengers (including the driver) and are not authorized to operate a school bus.

3. Hazardous materials restrictions: Drivers with a Class B CDL must obtain a Hazardous Materials (H) endorsement to transport hazardous materials, and may be subject to additional restrictions or regulations based on the type of material being transported.

4. Age restrictions: Drivers must be at least 18 years old to obtain a Class B CDL license, but must be at least 21 years old to transport hazardous materials or operate vehicles across state lines.

5. Medical requirements: Drivers with a Class B CDL must meet certain medical requirements, including passing a medical exam and maintaining a valid medical certificate.

It is important to note that these restrictions and limitations may vary based on the specific circumstances of each driver and the type of vehicle they are operating. It is important for drivers to stay up-to-date on the latest regulations and requirements for their CDL license by regularly reviewing the Illinois Commercial Driver's License Study Guide and consulting with their employer or a qualified driving instructor.

Yes, you may be able to take the Class B CDL (Commercial Driver's License) written test in a language other than English in Illinois. The Illinois Secretary of State's office offers the written test in several languages, including Spanish, Polish, Chinese, and Korean.

However, it is important to note that the road skills test is only offered in English, and it is necessary to be able to communicate effectively in English while operating a commercial vehicle on the road. Additionally, if you are applying for a Hazardous Materials (H) endorsement, you must pass a written test in English regardless of whether or not you took the initial CDL written test in another language.

If you require a language other than English for the written test, you should contact your local Secretary of State's office to confirm availability and make an appointment. It may also be helpful to review study materials and practice tests in your preferred language before taking the exam.

Yes, you can request accommodations for the Class B CDL (Commercial Driver's License) written test in Illinois if you have a disability that may affect your ability to take the test. The Illinois Secretary of State's office provides reasonable accommodations to individuals with disabilities in accordance with the Americans with Disabilities Act (ADA).

To request accommodations, you should contact the Secretary of State's office and provide documentation of your disability, including a description of the functional limitations it causes. You will also need to specify the type of accommodation you are requesting, such as additional testing time or a separate testing room.

The Secretary of State's office will review your request and work with you to determine appropriate accommodations that allow you to take the test effectively. It is recommended that you make your request well in advance of your scheduled testing date to ensure that accommodations can be arranged in a timely manner.

Keep in mind that there are certain requirements for obtaining a CDL license, such as passing the written and road skills tests, that cannot be waived or modified due to accommodations. However, accommodations can be made to ensure that you have an equal opportunity to demonstrate your knowledge and skills on the test.

If you fail the Class B CDL (Commercial Driver's License) written test in Illinois, you may retake it after a waiting period of at least one business day. You will need to make a new appointment and pay the fee for the test again.

It is recommended that you review the study materials and practice tests before retaking the exam to improve your chances of passing. The Illinois Secretary of State's office provides study guides and practice tests for the CDL written test, and they can be found on their website.

Keep in mind that there is a limit to the number of times you can retake the written test within a certain period. In Illinois, you can retake the test up to three times within one year before being required to wait longer.

If you fail the written test three times, you will need to wait at least 30 days before retaking it again. Additionally, if you fail the road skills test three times, you must wait at least 14 days before retesting.

It is important to prepare thoroughly for the CDL written and road skills tests to avoid multiple failed attempts and delays in obtaining your CDL license.
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