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 Idaho Commercial Driver’s License 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.
15. When changing lanes:
Always use your turn signals and check your mirrors when changing lanes.
16. When leaving your vehicle:
Parking brakes should be used whenever you park. If necessary, chock your wheels.
17. Bridges usually:
Bridges tend to freeze before other parts of the road surface. You should be especially careful on bridges when temperatures are near the freezing point.
18. Dual tires should:
When inspecting a vehicle, you should verify that your dual tires do not come into contact with one another, or with any other part of the vehicle.
19. When passing a row of parked vehicles, a driver should:
You should be cautious when passing parked vehicles. A person may step out of a parked vehicle or out from between parked vehicles without looking for oncoming traffic. A driver may begin moving their vehicle before realizing you are there.
20. As part of the vehicle inspection test, you will be asked to:
During the vehicle inspection test, you will be asked to do a complete inspection of your vehicle. You will need to explain what you are inspecting and why.
21. While still below the legal limit, a driver operating a CMV with a detectable amount of alcohol in their system will:
If you are found to have any detectable amount of alcohol in your system while operating a CMV but your blood alcohol concentration (BAC) is still below the legal limit of 0.04 percent, you will be put out-of-service for 24 hours. It is both illegal and dangerous to operate a motor vehicle while under the influence of alcohol.
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Frequently Asked Questions
Here are the steps to obtain a Class B CDL license in Idaho:
1. Obtain and study the Idaho Commercial Driver's License Manual.
2. Obtain a medical certificate from a licensed medical examiner.
3. Apply for and obtain a Commercial Learner's Permit (CLP) from the Idaho Department of Transportation (IDOT).
4. Practice driving with your CLP and gain experience operating your Class B vehicle.
5. Schedule and pass the CDL skills test at an IDOT-approved testing location.
6. Pay the applicable fees and obtain your Class B CDL license from IDOT.
It is important to note that additional endorsements may be required for certain types of vehicles or cargo, such as hazardous materials or passenger transportation.
Some examples of vehicles you can operate with a Class B CDL license in Idaho include:
- Straight trucks (e.g., delivery trucks, dump trucks)
- Large buses (e.g., school buses, city buses)
- Box trucks with trailers
- Tractor-trailers (i.e., semi-trucks) without the trailer exceeding 10,000 pounds
- Cement mixers
- Tow trucks
It is important to note that additional endorsements may be required for certain types of vehicles or cargo, such as hazardous materials or passenger transportation.
1. Age: You must be at least 18 years old to operate a commercial vehicle within the state of Idaho, and at least 21 years old to operate a commercial vehicle across state lines or transport hazardous materials.
2. Driver's License: You must possess a valid Idaho driver's license.
3. Medical Certification: You must obtain a medical examination certificate from an approved medical examiner that certifies you meet the physical standards required for operating a commercial vehicle.
4. Commercial Learner's Permit (CLP): You must obtain a CLP by passing a knowledge test and meeting other requirements, such as providing proof of identity and residency in Idaho.
5. Skills Test: You must pass a skills test that includes a pre-trip inspection, basic vehicle control, and an on-road driving test.
6. Background Check: You will need to pass a background check that includes your driving record, criminal history, and other relevant information.
7. Fees: There are fees associated with obtaining and maintaining your Class B CDL license in Idaho.
It is important to note that additional endorsements may be required for certain types of vehicles or cargo, such as hazardous materials or passenger transportation.
It is important to note that some employers may have their own age requirements for certain types of commercial driving jobs, so it is important to check with them before pursuing a Class B CDL license.
The most common endorsements for Class B CDL holders are:
1. Passenger (P) endorsement: Required for drivers who will be operating a bus or vehicle designed to carry 16 or more passengers, including the driver.
2. School Bus (S) endorsement: Required for drivers who will be operating a school bus.
3. Tank Vehicle (N) endorsement: Required for drivers who will be operating a vehicle designed to transport liquids or gases in bulk tanks.
4. Hazardous Materials (H) endorsement: Required for drivers who will be transporting hazardous materials as defined by federal law.
To obtain an endorsement, you must pass additional written and/or skills tests and meet other requirements, such as obtaining a security clearance and providing proof of identity and residency in Idaho.
1. Pre-Trip Inspection: You will be required to inspect the vehicle to ensure that it is in safe operating condition. You will need to identify and explain any problems or defects that you find during the inspection.
2. Basic Vehicle Control: You will be required to demonstrate your ability to maneuver the vehicle through a series of maneuvers, including backing, turning, and parking.
3. On-Road Driving: You will be required to demonstrate your ability to safely operate the vehicle in real-world traffic situations. This portion of the test will include a variety of driving scenarios, such as changing lanes, merging onto highways, and navigating intersections.
During the skills test, you will be evaluated on your ability to perform each task safely and effectively while following all traffic laws and regulations. It's important to note that the skills test is conducted in an actual commercial vehicle, so you should be comfortable with driving a large vehicle before taking the test.
1. Vehicle Weight: Drivers with a Class B CDL are limited to operating vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more. If the vehicle being towed has a GVWR of 10,000 pounds or more, the combined weight of the vehicle and the trailer cannot exceed 26,001 pounds.
2. Passenger Limitations: Drivers with a Class B CDL are not allowed to transport more than 16 passengers (including the driver) on a commercial vehicle.
3. Endorsement Limitations: As mentioned earlier, drivers with a Class B CDL may only operate vehicles for which they have obtained the necessary endorsements.
4. Hazardous Materials Limitations: Drivers with a Class B CDL may transport hazardous materials (as defined by federal law) only if they have obtained the necessary Hazardous Materials (H) endorsement and comply with all safety regulations related to the transportation of hazardous materials.
It's important to note that these restrictions and limitations may vary by state, so it's always important to check with your local DMV or licensing agency to ensure that you are in compliance.
If you choose to take the written test in a language other than English, you will need to indicate your language preference when you apply for your CDL. You may also need to provide additional documentation to prove your proficiency in the selected language.
It's important to note that even if you take the written test in a language other than English, you will still need to be able to read and understand English in order to operate a commercial vehicle safely on the road. The ability to read and understand road signs and communicate with law enforcement officers and other drivers is essential for safe driving.
To request accommodations, you will need to fill out the DMV's Request for Accommodation form and provide documentation of your disability from a qualified medical professional. The documentation must describe the nature of your disability and how it affects your ability to take the test.
The DMV will review your request and work with you to determine appropriate accommodations. Accommodations may include extended testing time, use of assistive technology, or alternative test formats.
It's important to note that requests for accommodations should be made as early as possible in the CDL application process, as it may take time to arrange for appropriate accommodations.
If you fail the written test three times, you will need to wait at least 30 days before you can take the test again. It's important to note that there is a fee for each attempt at the written test, so it's a good idea to study and prepare thoroughly before taking the test.
In Idaho, there are study materials available online and at DMV offices to help you prepare for the CDL written test. You may also want to consider taking a CDL preparation course or practice tests to improve your chances of passing the test on your next attempt.
Once you pass the written test, you will be eligible to take the CDL skills (driving) test. Passing both tests is necessary to obtain your Class B CDL in Idaho.