Knowledge Test Class B
Number of Question
Passing Score
8. When a vehicle is started, the coolant temperature should:
Explanation
After an engine is started, the coolant temperature should begin a gradual rise toward the normal operating range.
9. What does an Anti-Lock Braking System (ABS) do?
Explanation
The purpose of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up when the driver brakes hard on a slippery surface.
10. When traveling down a steep downgrade:
Explanation
On a downgrade, the braking effect of the engine should be your primary method of controlling speed. Shift down to a lower gear before starting down the hill and save the brakes for additional slowing or stopping that may be required by road or traffic conditions.
11. When adjusting your mirrors before a trip:
Explanation
When properly adjusted, your mirrors should each display some part of your vehicle. Being able to see your own vehicle in your mirrors will give you a point of reference when judging the positions of other objects.
12. What should be done before transporting an over-length load?
Explanation
Over-length, over-width, and/or overweight loads may require special permits from the Department of Transportation.
13. If brakes overheat while going down a downhill grade, they may:
Explanation
Overuse of the brakes may cause them to overheat, making them less effective. This is known as "fade."
14. What is axle weight?
Explanation
"Axle weight" refers to the weight transmitted to the ground by one axle or one set of axles.
Frequently Asked Questions
A Class B CDL (Commercial Driver's License) is a specific type of license required to operate certain types of commercial vehicles in Oregon. It allows the driver to operate a single vehicle with a weight rating of 26,001 pounds or more, or a combination of vehicles with a total weight rating of 26,001 pounds or more, but the towed vehicle(s) has a weight rating of less than 10,000 pounds.
To obtain a Class B CDL license in Oregon, you must first meet the minimum age requirement of 18 years old and hold a valid Oregon driver's license. Then, you must pass both a written knowledge test and a skills test that includes a pre-trip inspection, basic vehicle control, and on-road driving. Additionally, you will need to provide proof of your identity and residency in Oregon, as well as pass a medical examination to ensure you are physically fit to operate commercial vehicles.
It's important to note that certain endorsements may be required for specific types of commercial vehicles or cargo. These endorsements include the Passenger (P) endorsement for transporting passengers, the Hazardous Materials (H) endorsement for transporting hazardous materials, and the Tank Vehicle (N) endorsement for operating tank vehicles.
To obtain a Class B CDL license in Oregon, you must first meet the minimum age requirement of 18 years old and hold a valid Oregon driver's license. Then, you must pass both a written knowledge test and a skills test that includes a pre-trip inspection, basic vehicle control, and on-road driving. Additionally, you will need to provide proof of your identity and residency in Oregon, as well as pass a medical examination to ensure you are physically fit to operate commercial vehicles.
It's important to note that certain endorsements may be required for specific types of commercial vehicles or cargo. These endorsements include the Passenger (P) endorsement for transporting passengers, the Hazardous Materials (H) endorsement for transporting hazardous materials, and the Tank Vehicle (N) endorsement for operating tank vehicles.
With a Class B CDL license in Oregon, you can operate a single vehicle with a weight rating of 26,001 pounds or more, or a combination of vehicles with a total weight rating of 26,001 pounds or more but the towed vehicle(s) has a weight rating of less than 10,000 pounds.
This includes vehicles such as:
- Single-unit trucks with three or more axles
- Dump trucks
- Box trucks
- Large buses (with the Passenger endorsement)
- Tow trucks (with the appropriate endorsements)
- Straight trucks (with the appropriate endorsements)
It's important to note that certain vehicles may require additional endorsements, such as the Hazardous Materials (H) endorsement for transporting hazardous materials, or the Tank Vehicle (N) endorsement for operating tank vehicles. Be sure to check with the Oregon Department of Transportation for specific requirements related to your particular vehicle.
This includes vehicles such as:
- Single-unit trucks with three or more axles
- Dump trucks
- Box trucks
- Large buses (with the Passenger endorsement)
- Tow trucks (with the appropriate endorsements)
- Straight trucks (with the appropriate endorsements)
It's important to note that certain vehicles may require additional endorsements, such as the Hazardous Materials (H) endorsement for transporting hazardous materials, or the Tank Vehicle (N) endorsement for operating tank vehicles. Be sure to check with the Oregon Department of Transportation for specific requirements related to your particular vehicle.
To obtain a Class B CDL (Commercial Driver's License) license in Oregon, you must meet several requirements. These include:
1. Age: You must be at least 18 years old to obtain a Class B CDL license in Oregon.
2. Driver's License: You must hold a valid Oregon driver's license.
3. Knowledge Test: You must pass a written knowledge test that covers general commercial driving knowledge, air brakes, and any additional endorsements you may need for your specific vehicle or cargo.
4. Skills Test: You must pass a skills test that includes a pre-trip inspection, basic vehicle control, and on-road driving.
5. Medical Examination: You must pass a medical examination to ensure you are physically fit to operate commercial vehicles.
6. Identification and Residency: You will need to provide proof of your identity and residency in Oregon.
7. Fees: There are fees associated with obtaining a Class B CDL license in Oregon, including application fees and testing fees.
It's important to note that certain endorsements may be required for specific types of commercial vehicles or cargo. These endorsements include the Passenger (P) endorsement for transporting passengers, the Hazardous Materials (H) endorsement for transporting hazardous materials, and the Tank Vehicle (N) endorsement for operating tank vehicles.
1. Age: You must be at least 18 years old to obtain a Class B CDL license in Oregon.
2. Driver's License: You must hold a valid Oregon driver's license.
3. Knowledge Test: You must pass a written knowledge test that covers general commercial driving knowledge, air brakes, and any additional endorsements you may need for your specific vehicle or cargo.
4. Skills Test: You must pass a skills test that includes a pre-trip inspection, basic vehicle control, and on-road driving.
5. Medical Examination: You must pass a medical examination to ensure you are physically fit to operate commercial vehicles.
6. Identification and Residency: You will need to provide proof of your identity and residency in Oregon.
7. Fees: There are fees associated with obtaining a Class B CDL license in Oregon, including application fees and testing fees.
It's important to note that certain endorsements may be required for specific types of commercial vehicles or cargo. These endorsements include the Passenger (P) endorsement for transporting passengers, the Hazardous Materials (H) endorsement for transporting hazardous materials, and the Tank Vehicle (N) endorsement for operating tank vehicles.
The minimum age requirement for obtaining a Class B CDL (Commercial Driver's License) license in Oregon is 18 years old. However, if you plan to drive between states or transport hazardous materials, you must be at least 21 years old to obtain the appropriate endorsements.
It's important to note that some companies may have their own age requirements for hiring drivers, and certain types of commercial driving may have higher age requirements. For example, drivers of large buses that transport passengers may be required to be at least 21 or 25 years old, depending on the company or organization they are working for.
It's important to note that some companies may have their own age requirements for hiring drivers, and certain types of commercial driving may have higher age requirements. For example, drivers of large buses that transport passengers may be required to be at least 21 or 25 years old, depending on the company or organization they are working for.
It depends on the type of vehicle you plan to operate and the type of cargo you plan to transport with your Class B CDL (Commercial Driver's License) license.
In Oregon, the following endorsements are available for Class B CDL drivers:
1. Passenger (P) endorsement: Required for drivers who will be operating a vehicle designed to transport 16 or more passengers, including the driver.
2. Hazardous Materials (H) endorsement: Required for drivers who will be transporting hazardous materials in amounts that require placarding.
3. Tank Vehicle (N) endorsement: Required for drivers who will be operating a tank vehicle designed to transport any liquid or gaseous materials within a tank that is permanently or temporarily attached to the vehicle or chassis.
4. School Bus (S) endorsement: Required for drivers who will be operating a school bus.
Note that some endorsements may have additional requirements beyond passing a written test, such as background checks or additional training. It's important to check the specific requirements for each endorsement you may need.
In Oregon, the following endorsements are available for Class B CDL drivers:
1. Passenger (P) endorsement: Required for drivers who will be operating a vehicle designed to transport 16 or more passengers, including the driver.
2. Hazardous Materials (H) endorsement: Required for drivers who will be transporting hazardous materials in amounts that require placarding.
3. Tank Vehicle (N) endorsement: Required for drivers who will be operating a tank vehicle designed to transport any liquid or gaseous materials within a tank that is permanently or temporarily attached to the vehicle or chassis.
4. School Bus (S) endorsement: Required for drivers who will be operating a school bus.
Note that some endorsements may have additional requirements beyond passing a written test, such as background checks or additional training. It's important to check the specific requirements for each endorsement you may need.
The Class B CDL (Commercial Driver's License) skills test in Oregon consists of three parts:
1. Pre-trip Inspection: You will be required to perform a complete inspection of your vehicle, including the engine compartment, cab, and external components. You'll need to identify any safety hazards or maintenance issues that would prevent the vehicle from being operated safely.
2. Basic Vehicle Control: You will be required to demonstrate your ability to control the vehicle in a variety of situations, such as backing up, turning, and parking.
3. Road Test: You will be required to demonstrate your ability to safely operate the vehicle on public roads and in traffic. This includes obeying traffic laws and proper use of turn signals, mirrors, and other safety equipment.
The skills test is typically conducted in a vehicle that is representative of the type of commercial vehicle you plan to operate with your Class B CDL license. The skills test must be conducted by a certified examiner who is authorized by the Oregon Department of Transportation (ODOT).
It's important to note that passing the skills test is just one step in obtaining a Class B CDL license. You must also pass a written knowledge test and meet other requirements, such as medical certification and background checks.
1. Pre-trip Inspection: You will be required to perform a complete inspection of your vehicle, including the engine compartment, cab, and external components. You'll need to identify any safety hazards or maintenance issues that would prevent the vehicle from being operated safely.
2. Basic Vehicle Control: You will be required to demonstrate your ability to control the vehicle in a variety of situations, such as backing up, turning, and parking.
3. Road Test: You will be required to demonstrate your ability to safely operate the vehicle on public roads and in traffic. This includes obeying traffic laws and proper use of turn signals, mirrors, and other safety equipment.
The skills test is typically conducted in a vehicle that is representative of the type of commercial vehicle you plan to operate with your Class B CDL license. The skills test must be conducted by a certified examiner who is authorized by the Oregon Department of Transportation (ODOT).
It's important to note that passing the skills test is just one step in obtaining a Class B CDL license. You must also pass a written knowledge test and meet other requirements, such as medical certification and background checks.
Yes, there are some restrictions and limitations for drivers with a Class B CDL (Commercial Driver's License) license in Oregon. Here are a few examples:
1. Vehicle Weight: With a Class B CDL, you are allowed to operate a single vehicle with a gross vehicle weight rating (GVWR) of 26,001 pounds or more. However, you cannot tow more than 10,000 pounds.
2. Passenger Limitations: If you have a Class B CDL with a passenger (P) endorsement, you are allowed to transport 16 or more passengers, including the driver. However, you cannot transport passengers in a double-decker bus.
3. Hazardous Materials: If you have a Class B CDL with a hazardous materials (H) endorsement, there are certain restrictions on the types and amounts of hazardous materials you can transport. You must also comply with federal regulations regarding the transportation of hazardous materials.
4. School Bus Limitations: If you have a Class B CDL with a school bus (S) endorsement, there may be restrictions on the types of school buses you can operate, depending on their size and weight.
It's important to note that there may be additional restrictions or limitations depending on your specific situation and endorsements. It's always a good idea to check with the Oregon Department of Transportation (ODOT) for more information.
1. Vehicle Weight: With a Class B CDL, you are allowed to operate a single vehicle with a gross vehicle weight rating (GVWR) of 26,001 pounds or more. However, you cannot tow more than 10,000 pounds.
2. Passenger Limitations: If you have a Class B CDL with a passenger (P) endorsement, you are allowed to transport 16 or more passengers, including the driver. However, you cannot transport passengers in a double-decker bus.
3. Hazardous Materials: If you have a Class B CDL with a hazardous materials (H) endorsement, there are certain restrictions on the types and amounts of hazardous materials you can transport. You must also comply with federal regulations regarding the transportation of hazardous materials.
4. School Bus Limitations: If you have a Class B CDL with a school bus (S) endorsement, there may be restrictions on the types of school buses you can operate, depending on their size and weight.
It's important to note that there may be additional restrictions or limitations depending on your specific situation and endorsements. It's always a good idea to check with the Oregon Department of Transportation (ODOT) for more information.
Yes, you can take the Class B CDL (Commercial Driver's License) written test in a language other than English in Oregon. The Oregon Department of Transportation (ODOT) offers the Class B CDL written test in several languages, including Spanish, Russian, Vietnamese, Chinese, and Japanese.
To take the test in a language other than English, you must indicate your language preference when you apply for your CDL at an Oregon DMV office. You may be required to provide proof of your ability to read and understand the language you choose.
It's important to note that the skills test for the Class B CDL is typically conducted in English. However, if you need assistance with understanding instructions during the skills test due to a language barrier, an interpreter may be provided at your own expense.
To take the test in a language other than English, you must indicate your language preference when you apply for your CDL at an Oregon DMV office. You may be required to provide proof of your ability to read and understand the language you choose.
It's important to note that the skills test for the Class B CDL is typically conducted in English. However, if you need assistance with understanding instructions during the skills test due to a language barrier, an interpreter may be provided at your own expense.
Yes, you can request accommodations for the Class B CDL (Commercial Driver's License) written test in Oregon if you have a disability. The Oregon Department of Transportation (ODOT) provides reasonable accommodations to individuals with disabilities to ensure they have equal access to CDL testing.
To request accommodations, you must complete the Request for Accommodation of Disabilities form, which is available on the ODOT website or at any Oregon DMV office. The form must be completed by a qualified medical professional who can verify your disability and explain the type of accommodation you need.
Examples of accommodations that may be provided include extra testing time, a separate testing room, a reader or scribe, or a computer with assistive technology. The ODOT will review your request and will work with you to determine the appropriate accommodations based on your specific needs.
It's important to note that requests for accommodations must be made at least 21 days prior to your scheduled test date to allow sufficient time for review and implementation.
To request accommodations, you must complete the Request for Accommodation of Disabilities form, which is available on the ODOT website or at any Oregon DMV office. The form must be completed by a qualified medical professional who can verify your disability and explain the type of accommodation you need.
Examples of accommodations that may be provided include extra testing time, a separate testing room, a reader or scribe, or a computer with assistive technology. The ODOT will review your request and will work with you to determine the appropriate accommodations based on your specific needs.
It's important to note that requests for accommodations must be made at least 21 days prior to your scheduled test date to allow sufficient time for review and implementation.
If you fail the Class B CDL (Commercial Driver's License) written test in Oregon, you may retake it after a waiting period. The waiting period depends on the number of times you have failed the test:
- If you fail the test for the first time, you can retake it the next business day.
- If you fail the test for the second time, you must wait at least seven days before retaking it.
- If you fail the test for the third or subsequent time, you must wait at least 14 days before retaking it.
There is a fee to retake the test, which is currently $10 in Oregon. You can schedule a new testing appointment at any Oregon DMV office.
It's important to note that if you fail the written test three or more times, you may be required to complete a Commercial Driver Training Program before being allowed to retake the test. Additionally, if you fail the skills test (driving portion) three or more times, you may be required to complete additional training before being allowed to retake it.
- If you fail the test for the first time, you can retake it the next business day.
- If you fail the test for the second time, you must wait at least seven days before retaking it.
- If you fail the test for the third or subsequent time, you must wait at least 14 days before retaking it.
There is a fee to retake the test, which is currently $10 in Oregon. You can schedule a new testing appointment at any Oregon DMV office.
It's important to note that if you fail the written test three or more times, you may be required to complete a Commercial Driver Training Program before being allowed to retake the test. Additionally, if you fail the skills test (driving portion) three or more times, you may be required to complete additional training before being allowed to retake it.
