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 two, three or four possible answer choices. Test questions come from the South Carolina Commercial Driver 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.
36. The person responsible for the safe transport of cargo is the driver.
The driver of a vehicle is responsible for the safe transport of its cargo, regardless of who loaded the vehicle.
37. If stopped on the road or shoulder, within 10 minutes, you must:
If stopped on the side of the road, you must place emergency warning devices, such as reflective warning triangles, within 10 minutes of stopping.
38. How should you brake if your vehicle loses its ABS?
An Anti-Lock Braking System (ABS) is in place as an addition to a braking system. It intervenes to prevent brakes from locking up during hard braking. If ABS is not working, the basic braking functions on a vehicle will still remain, so the driver can continue to drive and brake normally.
39. The minimum size of placards identifying hazardous materials is:
Hazardous materials placards must be at least 10 and three-quarter inches square.
40. Roads are slippery when it first begins to rain because:
Roads are especially slippery when it first begins to rain. Rain water initially mixes with oil and grease on the road to form a slippery film. As the rain continues, this mixture will eventually wash away.
41. When completing an offset back/left parking maneuver, a driver should:
If you are asked to complete an offset back/left parking maneuver, you should first pull straight forward, then back up to the left. Your vehicle must be parked completely within the boundaries of the parking space.
42. If you are taking the driving test and the route does not include a railroad crossing, you:
During the on-road driving test, if your route does not include a railroad crossing, the examiner may ask you to explain and demonstrate the necessary procedures at a simulated location.
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Frequently Asked Questions
To obtain a Class B CDL license in South Carolina, follow these steps:
1. Obtain a South Carolina Commercial Learner's Permit (CLP) by passing the appropriate knowledge tests and meeting the requirements for age, residency, and medical certification.
2. Practice driving with the CLP for at least 14 days.
3. Schedule and pass a skills test with a certified examiner. The skills test will consist of three parts: pre-trip inspection, basic vehicle control, and road test.
4. Submit the necessary forms and fees to the South Carolina Department of Motor Vehicles (DMV).
5. Receive your Class B CDL license from the DMV.
It is important to note that additional endorsements may be required depending on the specific type of vehicle being operated (e.g., passenger endorsement for buses).
- Straight trucks (such as delivery trucks)
- Large buses (such as school buses)
- Dump trucks with small trailers
- Box trucks with attached trailers
- Tow trucks with small trailers
It is important to note that additional endorsements may be required to operate certain types of vehicles, such as those carrying hazardous materials or passengers.
1. Age: You must be at least 18 years old to drive within the state of South Carolina and at least 21 years old to drive interstate.
2. Residency: You must be a resident of South Carolina or have a valid South Carolina address on your driver's license.
3. Medical certification: You must pass a medical examination and obtain a medical certificate from a certified medical examiner.
4. Commercial Learner's Permit (CLP): You must first obtain a CLP by passing the appropriate knowledge tests for the type of vehicle you wish to operate. The CLP allows you to practice driving with a qualified CDL holder in the vehicle with you.
5. Skills test: You must pass a skills test consisting of three parts: pre-trip inspection, basic vehicle control, and road test, with a certified examiner.
6. Knowledge tests: You may be required to pass additional knowledge tests and obtain endorsements depending on the specific type of vehicle you wish to operate (e.g., passenger endorsement for buses).
7. Clean driving record: You must have a clean driving record with no serious traffic violations or DUI convictions.
8. Background check: You may be required to undergo a background check depending on the type of endorsement you are seeking.
It is important to note that these requirements may vary depending on your specific situation and the type of vehicle you wish to operate with your Class B CDL license.
1. Passenger endorsement (P) - required for drivers of vehicles designed to transport 16 or more passengers, including the driver.
2. School bus endorsement (S) - required for drivers of school buses.
3. Tanker endorsement (N) - required for drivers transporting liquid or gaseous materials in tanks.
4. Hazardous materials endorsement (H) - required for drivers transporting hazardous materials in amounts that require placards.
To obtain these endorsements, you will need to pass additional knowledge tests and meet other requirements, such as background checks and fingerprinting. It is important to note that some employers may require additional endorsements beyond those required by the state.
1. Pre-trip inspection: In this part of the test, you will be asked to inspect your vehicle to make sure it is safe to operate. You will need to identify and explain the function of various parts of the vehicle, including the brakes, steering, lights, and tires.
2. Basic vehicle control: In this part of the test, you will be asked to demonstrate your ability to control the vehicle in various situations. This may involve tasks such as backing up, turning, and parking.
3. On-road driving: In this part of the test, you will be asked to drive the vehicle on public roads while following directions from the examiner. You will need to demonstrate your ability to safely operate the vehicle in traffic and obey all traffic laws.
During the skills test, you will be evaluated on your ability to perform each task safely and correctly. It is important to practice and prepare for each part of the test to increase your chances of passing.
1. Passenger restrictions: If you have a Class B CDL with a passenger endorsement (P), you are not permitted to operate a vehicle designed to transport more than 16 passengers, including the driver.
2. Trailer restrictions: If you have a Class B CDL, you are not permitted to tow more than one vehicle and the combined weight of the vehicles cannot exceed 10,000 pounds.
3. Hazardous materials restrictions: If you have a Class B CDL with a hazardous materials endorsement (H), you must comply with all federal and state regulations related to the transportation of hazardous materials.
4. Age restrictions: To obtain a Class B CDL in South Carolina, you must be at least 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.
It is important to be aware of these restrictions and limitations as they can impact your ability to operate certain types of vehicles or transport certain types of cargo.
It is important to note that you will still need to be able to read and understand English for other aspects of the CDL testing process, such as the pre-trip inspection and on-road driving test. If you are not comfortable with English, it may be helpful to take a CDL preparation course or seek out other resources to help you prepare for the exam and improve your language skills.
To request accommodations, you must fill out a Request for Accommodations for Persons with Disabilities (Form MV-94) and submit it to the DMV at least 30 days before your scheduled test date. The form requires you to provide information about your disability and the specific accommodations you are requesting.
The DMV will review your request and determine if the requested accommodations can be provided. Examples of accommodations that may be provided include extra testing time, a reader or scribe, or a private testing room.
It is important to note that you must still meet all other eligibility requirements for obtaining a Class B CDL license, regardless of any accommodations provided for the written test.
If you fail the test, you will be required to wait at least one day before retaking it. If you fail the test three times, you will be required to wait at least seven days before retaking it again. If you fail the test four or more times, you will be required to wait at least 14 days before retaking it.
It is important to note that each time you retake the test, you will be required to pay the testing fee again. Therefore, it is in your best interest to prepare thoroughly for the test and only take it when you feel fully ready.
Additionally, if you fail the written test three or more times, it may be a sign that you need additional training or study materials. Consider seeking out a CDL preparation course or other resources to help improve your knowledge and skills before attempting the test again.