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 driver). 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 Missouri Commercial Driver’s Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), 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 and School bus.
Number of Question
Passing Score
36. Stopping distance can be affected by:
Explanation
Factors that can affect stopping distance include the vehicle's speed, its weight, and the traction provided by the road surface.
37. Scan the road ____ ahead of your vehicle.
Explanation
Good drivers scan the road at least 12 to 15 seconds ahead of their vehicles. Looking ahead will allow you to identify and react to hazards before meeting them. Be sure to specifically look for vehicles that are coming onto the highway, entering into your lane, or turning.
38. Which of the following is true?
Explanation
Missing clamps, spacers, studs, or lugs are dangerous, as are mismatched, bent, or cracked lock rings. Be sure your tires and rims are in good condition before operating your commercial motor vehicle.
39. What helps prevent wheel lockup when braking?
Explanation
The purpose of an Anti-Lock Braking System (ABS) is to prevent wheel lockup while brakes are being applied.
40. When driving in hot weather:
Explanation
Because air pressure increases as air expands in the heat, it is important to monitor your tire pressure when driving in very hot weather. To prevent the engine from overheating, there must be an adequate amount of oil in the engine, as well as enough water and antifreeze in the cooling system. Antifreeze is helpful for the engine in both hot and cold weather.
41. Which of the following is not a type of retarder?
Explanation
Retarders are mechanisms in some vehicles that help slow the vehicle and reduce the need for braking. The four basic types of retarders are exhaust, engine, hydraulic, and electric.
42. When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:
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.
Frequently Asked Questions
A Class B CDL (Commercial Driver's License) in Missouri allows an individual to operate a single vehicle with a weight of 26,001 pounds or more, or a combination of vehicles with a combined weight of less than 26,001 pounds.
Here are the steps to obtain a Class B CDL license in Missouri:
1. Meet the eligibility criteria: You must be at least 18 years old, possess a valid Missouri driver’s license, and have no serious traffic violations or convictions.
2. Obtain and study the Missouri CDL manual: The manual contains all the information you need to pass the knowledge exam.
3. Schedule and pass the written knowledge exam: You must pass this exam before you can move on to the skills test.
4. Obtain a commercial learner’s permit (CLP): This permit allows you to practice driving a commercial motor vehicle (CMV) with a licensed CDL holder in the front seat.
5. Practice driving and prepare for the skills test: You should practice driving with a licensed CDL holder to gain experience and prepare for the skills test.
6. Schedule and pass the skills test: The skills test consists of three parts- vehicle inspection, basic control skills, and road test.
7. Pay the required fees and obtain your Class B CDL: Once you have passed all required tests and paid all necessary fees, you will receive your Class B CDL license.
Here are the steps to obtain a Class B CDL license in Missouri:
1. Meet the eligibility criteria: You must be at least 18 years old, possess a valid Missouri driver’s license, and have no serious traffic violations or convictions.
2. Obtain and study the Missouri CDL manual: The manual contains all the information you need to pass the knowledge exam.
3. Schedule and pass the written knowledge exam: You must pass this exam before you can move on to the skills test.
4. Obtain a commercial learner’s permit (CLP): This permit allows you to practice driving a commercial motor vehicle (CMV) with a licensed CDL holder in the front seat.
5. Practice driving and prepare for the skills test: You should practice driving with a licensed CDL holder to gain experience and prepare for the skills test.
6. Schedule and pass the skills test: The skills test consists of three parts- vehicle inspection, basic control skills, and road test.
7. Pay the required fees and obtain your Class B CDL: Once you have passed all required tests and paid all necessary fees, you will receive your Class B CDL license.
With a Class B CDL license in Missouri, you can operate a single vehicle with a weight of 26,001 pounds or more, or a combination of vehicles with a combined weight of less than 26,001 pounds.
Examples of vehicles you can operate with a Class B CDL include:
- Straight trucks such as dump trucks, box trucks, and delivery trucks
- Large buses such as school buses and city buses
- Segmented buses such as articulated buses
- Tow trucks such as wreckers and rollbacks
- Large passenger vans such as airport shuttles and church buses
However, it is important to note that you may need additional endorsements to operate certain types of vehicles, such as passenger or hazardous materials transport.
Examples of vehicles you can operate with a Class B CDL include:
- Straight trucks such as dump trucks, box trucks, and delivery trucks
- Large buses such as school buses and city buses
- Segmented buses such as articulated buses
- Tow trucks such as wreckers and rollbacks
- Large passenger vans such as airport shuttles and church buses
However, it is important to note that you may need additional endorsements to operate certain types of vehicles, such as passenger or hazardous materials transport.
To obtain a Class B CDL (Commercial Driver's License) in Missouri, you must meet the following requirements:
1. Age: You must be at least 18 years old to drive within the state of Missouri and at least 21 years old to drive across state lines.
2. Valid Missouri driver’s license: You must possess a valid Missouri driver’s license.
3. Medical certification: You must pass a medical examination and obtain a medical certificate from a certified medical examiner.
4. Knowledge test: You must pass a written knowledge test that covers general knowledge of driving a commercial vehicle, air brakes (if applicable), and any endorsements you plan to obtain.
5. Commercial learner's permit (CLP): You must obtain a commercial learner's permit (CLP), which requires passing a knowledge test specific to the type of commercial vehicle you plan to operate.
6. Skills test: You must pass a skills test that includes a pre-trip inspection, basic vehicle control, and on-road driving.
7. Background check: You must provide proof of citizenship or lawful permanent residency in the United States and pass a background check.
8. Fees: You must pay all necessary fees for obtaining your CDL license.
It is also important to note that certain endorsements may require additional testing, such as passenger or hazardous materials endorsements.
1. Age: You must be at least 18 years old to drive within the state of Missouri and at least 21 years old to drive across state lines.
2. Valid Missouri driver’s license: You must possess a valid Missouri driver’s license.
3. Medical certification: You must pass a medical examination and obtain a medical certificate from a certified medical examiner.
4. Knowledge test: You must pass a written knowledge test that covers general knowledge of driving a commercial vehicle, air brakes (if applicable), and any endorsements you plan to obtain.
5. Commercial learner's permit (CLP): You must obtain a commercial learner's permit (CLP), which requires passing a knowledge test specific to the type of commercial vehicle you plan to operate.
6. Skills test: You must pass a skills test that includes a pre-trip inspection, basic vehicle control, and on-road driving.
7. Background check: You must provide proof of citizenship or lawful permanent residency in the United States and pass a background check.
8. Fees: You must pay all necessary fees for obtaining your CDL license.
It is also important to note that certain endorsements may require additional testing, such as passenger or hazardous materials endorsements.
In Missouri, the minimum age requirement for a Class B CDL (Commercial Driver's License) is 18 years old. This allows you to drive a single vehicle with a weight of 26,001 pounds or more, or a combination of vehicles with a combined weight of less than 26,001 pounds.
However, if you plan to drive across state lines or transport hazardous materials, you must be at least 21 years old to obtain the necessary endorsements for these activities.
However, if you plan to drive across state lines or transport hazardous materials, you must be at least 21 years old to obtain the necessary endorsements for these activities.
It depends on your intended use of the Class B CDL license. Some endorsements that may be required for a Class B CDL license in Missouri include:
1. Passenger endorsement (P): Required for drivers who intend to transport 16 or more passengers, including the driver.
2. School bus endorsement (S): Required for drivers who intend to operate a school bus.
3. Tank vehicle endorsement (N): Required for drivers who intend to transport liquids or gases in tanks.
4. Hazardous materials endorsement (H): Required for drivers who intend to transport hazardous materials.
5. Combination of tank vehicle and hazardous materials endorsement (X): Required for drivers who intend to transport both hazardous materials and liquids or gases in tanks.
Note that each endorsement has its own set of requirements, including additional knowledge and skills tests, background checks, and fees. It's important to research the specific requirements for any endorsements you may need as part of your Class B CDL license.
1. Passenger endorsement (P): Required for drivers who intend to transport 16 or more passengers, including the driver.
2. School bus endorsement (S): Required for drivers who intend to operate a school bus.
3. Tank vehicle endorsement (N): Required for drivers who intend to transport liquids or gases in tanks.
4. Hazardous materials endorsement (H): Required for drivers who intend to transport hazardous materials.
5. Combination of tank vehicle and hazardous materials endorsement (X): Required for drivers who intend to transport both hazardous materials and liquids or gases in tanks.
Note that each endorsement has its own set of requirements, including additional knowledge and skills tests, background checks, and fees. It's important to research the specific requirements for any endorsements you may need as part of your Class B CDL license.
The Class B CDL skills test in Missouri consists of three parts:
1. Pre-trip inspection: You will be asked to do a pre-trip inspection of your vehicle to ensure that it is safe to operate. This includes checking the brakes, steering, suspension, tires, lights, and other systems.
2. Basic vehicle control: You will demonstrate your ability to control the vehicle in various situations, such as backing up, turning, stopping, and starting on a grade.
3. On-road driving: You will drive the vehicle on public roads while being evaluated on your ability to safely operate the vehicle in traffic. You will be asked to perform various maneuvers such as turning left and right, changing lanes, and merging onto highways.
During the skills test, you will be evaluated on your ability to operate the vehicle safely and effectively. You must pass all three parts of the test in order to obtain your Class B CDL.
It's important to note that you must have a valid Missouri driver's license and a valid medical certificate before you can take the Class B CDL skills test. Additionally, you must have passed the required knowledge tests for the Class B CDL before taking the skills test.
1. Pre-trip inspection: You will be asked to do a pre-trip inspection of your vehicle to ensure that it is safe to operate. This includes checking the brakes, steering, suspension, tires, lights, and other systems.
2. Basic vehicle control: You will demonstrate your ability to control the vehicle in various situations, such as backing up, turning, stopping, and starting on a grade.
3. On-road driving: You will drive the vehicle on public roads while being evaluated on your ability to safely operate the vehicle in traffic. You will be asked to perform various maneuvers such as turning left and right, changing lanes, and merging onto highways.
During the skills test, you will be evaluated on your ability to operate the vehicle safely and effectively. You must pass all three parts of the test in order to obtain your Class B CDL.
It's important to note that you must have a valid Missouri driver's license and a valid medical certificate before you can take the Class B CDL skills test. Additionally, you must have passed the required knowledge tests for the Class B CDL before taking the skills test.
Yes, there are restrictions and limitations for drivers with a Class B CDL license in Missouri. Some of the restrictions include:
1. Passenger carrying vehicles: If you have a Class B CDL with a passenger endorsement (P), you are limited to operating vehicles that carry 16 or more passengers, including the driver.
2. School buses: If you have a Class B CDL with a school bus endorsement (S), you are limited to operating school buses.
3. Tank vehicles: If you have a Class B CDL with a tank vehicle endorsement (N), you are limited to operating vehicles that transport liquids or gases in tanks.
4. Hazardous materials: If you have a Class B CDL with a hazardous materials endorsement (H), you are limited to transporting hazardous materials.
5. Combination of tank vehicle and hazardous materials: If you have a Class B CDL with a combination of tank vehicle and hazardous materials endorsement (X), you are limited to operating vehicles that transport both hazardous materials and liquids or gases in tanks.
It's important to note that these restrictions only apply if you have the specific endorsements for these types of vehicles or materials. Additionally, there may be other restrictions based on your driving record, medical history, or other factors. It's important to always follow the rules and regulations related to your Class B CDL license to ensure safety on the roads.
1. Passenger carrying vehicles: If you have a Class B CDL with a passenger endorsement (P), you are limited to operating vehicles that carry 16 or more passengers, including the driver.
2. School buses: If you have a Class B CDL with a school bus endorsement (S), you are limited to operating school buses.
3. Tank vehicles: If you have a Class B CDL with a tank vehicle endorsement (N), you are limited to operating vehicles that transport liquids or gases in tanks.
4. Hazardous materials: If you have a Class B CDL with a hazardous materials endorsement (H), you are limited to transporting hazardous materials.
5. Combination of tank vehicle and hazardous materials: If you have a Class B CDL with a combination of tank vehicle and hazardous materials endorsement (X), you are limited to operating vehicles that transport both hazardous materials and liquids or gases in tanks.
It's important to note that these restrictions only apply if you have the specific endorsements for these types of vehicles or materials. Additionally, there may be other restrictions based on your driving record, medical history, or other factors. It's important to always follow the rules and regulations related to your Class B CDL license to ensure safety on the roads.
Yes, you can take the Class B CDL written test in a language other than English in Missouri. The Missouri Department of Revenue (DOR) offers the written test in several languages, including Spanish, Korean, Russian, Vietnamese, Chinese, and more.
However, it's important to note that the skills test for the Class B CDL must be taken in English. Additionally, if you plan on transporting hazardous materials or passengers across state lines, you must be able to read and speak English well enough to communicate with officials and understand highway traffic signs and signals.
If you need to take the written test in a language other than English, you should contact your local Missouri DOR office to confirm availability and schedule an appointment. You may also need to provide additional documentation or pay additional fees for this service.
However, it's important to note that the skills test for the Class B CDL must be taken in English. Additionally, if you plan on transporting hazardous materials or passengers across state lines, you must be able to read and speak English well enough to communicate with officials and understand highway traffic signs and signals.
If you need to take the written test in a language other than English, you should contact your local Missouri DOR office to confirm availability and schedule an appointment. You may also need to provide additional documentation or pay additional fees for this service.
Yes, you can request accommodations for the Class B CDL written test if you have a disability that requires special testing arrangements in Missouri. The Missouri Department of Revenue (DOR) provides reasonable accommodations to individuals with disabilities to ensure equal access to the testing process.
To request accommodations, you will need to fill out a Request for Testing Accommodations form and submit it to the DOR. The form requires documentation of your disability and a description of the specific accommodations you are requesting.
Examples of accommodations that may be provided include extended testing time, a separate testing room, a reader, a scribe, or a sign language interpreter. The DOR will review your request and determine if they can provide the requested accommodations.
It's important to note that you need to request accommodations well in advance of your scheduled test date. The DOR may take several weeks to process your request and make arrangements for the accommodations. Additionally, you may need to provide additional documentation or information to support your request.
To request accommodations, you will need to fill out a Request for Testing Accommodations form and submit it to the DOR. The form requires documentation of your disability and a description of the specific accommodations you are requesting.
Examples of accommodations that may be provided include extended testing time, a separate testing room, a reader, a scribe, or a sign language interpreter. The DOR will review your request and determine if they can provide the requested accommodations.
It's important to note that you need to request accommodations well in advance of your scheduled test date. The DOR may take several weeks to process your request and make arrangements for the accommodations. Additionally, you may need to provide additional documentation or information to support your request.
Yes, if you fail the Class B CDL written test in Missouri, you can retake it. However, you will need to wait at least one day before taking the test again.
If you fail the test, you will be given a report that shows your score and the areas in which you need improvement. You can use this report to study and prepare for your next attempt.
It's important to note that there is a limit to the number of times you can retake the test. In Missouri, you are allowed to take the Class B CDL written test up to three times within a 30-day period. After three attempts, you must wait at least 30 days before attempting the test again.
Each time you take the test, there is a fee that must be paid. If you pass the test on your second or third attempt, you will only need to pay for those attempts. If you fail all three attempts, you will need to pay for the test again when you retake it after the 30-day waiting period.
If you fail the test, you will be given a report that shows your score and the areas in which you need improvement. You can use this report to study and prepare for your next attempt.
It's important to note that there is a limit to the number of times you can retake the test. In Missouri, you are allowed to take the Class B CDL written test up to three times within a 30-day period. After three attempts, you must wait at least 30 days before attempting the test again.
Each time you take the test, there is a fee that must be paid. If you pass the test on your second or third attempt, you will only need to pay for those attempts. If you fail all three attempts, you will need to pay for the test again when you retake it after the 30-day waiting period.
