Combination Vehicles Practice Test | North Carolina 2025 #2

Train for FREE online with our North Carolina CDL combination vehicle test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a NC combination license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a combination license may vary from state to state.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . If the trailer begins to skid, it is best to:

Release the brakes.

Accelerate.

Quickly turn the steering wheel one way, then the other.

Brake.

If your trailer begins to skid, you should release the brakes to help regain traction. Once the wheels grip the road again, the trailer will begin to straighten out and follow the path of the tractor.

2 . Using the trailer hand valve while driving:

Will help you turn safely.

Will stop your trailer safely.

Can cause a skid.

Is impossible.

Never use the trailer hand valve while operating your vehicle. Using the trailer hand valve while driving can cause your trailer to skid.

3 . Watching the road ahead:

Is more dangerous than only watching your mirrors.

Does not help you drive more safely.

Can help you avoid the need for sudden lane changes.

Making a sudden lane change can be dangerous while driving a combination vehicle. You can avoid the need to make a sudden lange change by looking down the road for upcoming obstacles that will require you to change lanes.

4 . If unsure if a trailer is equipped with ABS, you can:

Check under the trailer for wheel speed sensors coming from the back of the brakes.

Try driving on a slippery surface and see if ABS kicks in.

Assume it does have ABS.

Remove a tire and look for the ABS sensor on the axle.

Trailers and converter dollies built on or after March 1, 1998 are required to have Anti-Lock Braking Systems (ABS). This will be indicated by the presence of a yellow malfunction lamp. You can determine if older trailers have ABS by checking under the trailers for ECU and wheel speed sensor wires coming from the back of the brakes.

5 . When backing a trailer, how should you turn the steering wheel?

Turn the top of the steering wheel in the direction you want the trailer to go.

Turn the top of the steering wheel in the direction opposite of where you want the trailer to go.

It doesn’t matter.

It depends on where the trailer is being backed.

When backing with a trailer, turn the top of the steering wheel in the direction opposite of where you want to go. Once the trailer begins turning, you should then switch the direction of the steering wheel to follow the trailer.

6 . The service air line is attached to the:

Relay valves.

Supply line.

Emergency air line.

Steering wheel.

The service air line carries air and is controlled by either the foot brake or trailer hand brake. The service air line is attached to relay valves, which allow the trailer brakes to be applied quickly.

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2025 North Carolina | Frequently Asked Questions

To secure a CDL Bus endorsement in North Carolina, you must first possess a valid Commercial Driver's License (CDL). Then, pass the Passenger Transport Test and the School Bus Endorsement Test. You'll also need to pass a background check, submit to a physical examination, and complete specialized training. Finally, you'll need to pass a driving skills test in the type of bus you wish to drive.

To obtain a CDL Bus license in North Carolina, you need to be at least 21 years old, possess a valid driver's license, and pass a physical exam. You must also complete a commercial driver's education course and pass both the written and driving skills tests. A background check is also required. Finally, pay the necessary fees to receive your license.

Yes, specific training is necessary for a CDL Bus endorsement. This includes passing the Passenger Transport Test and the School Bus Endorsement Test. In addition, you must complete specialized training that focuses on driving a bus safely. This training typically covers topics like loading and unloading passengers, managing student behavior, and emergency procedures.

CDL Bus licenses are classified under the general CDL categories of A, B, and C. Class A CDL isn't typically used for buses. Class B CDL is for single vehicles like city buses. Class C CDL is for vehicles designed to transport 16 or more passengers, including the driver, like school buses. Each requires a Passenger (P) endorsement.

No, you cannot use your personal vehicle for the CDL Bus driving test in North Carolina. The vehicle used for the test must match the class and type of vehicle you plan to drive with your CDL. For a bus endorsement, this means taking the test in a commercial bus.

During the CDL Bus driving test, several skills and maneuvers are evaluated. These include pre-trip vehicle inspection, basic vehicle control, and on-road driving. You may be asked to execute specific maneuvers such as turning, merging, backing up the bus, and navigating intersections. The examiner will also assess your ability to control the bus under various traffic conditions.

Yes, additional medical prerequisites are required for a CDL Bus endorsement. Applicants must pass a Department of Transportation (DOT) physical examination every two years. This exam includes hearing and vision tests, blood pressure checks, and assessments for other medical conditions that could affect driving ability, such as diabetes or heart conditions.

No, it is not permissible to transport passengers without a valid CDL Bus endorsement in North Carolina. This endorsement is required for drivers who wish to operate a vehicle designed to carry 16 or more passengers, including the driver. Driving without the proper endorsement can result in fines and penalties.

You can add a CDL Bus endorsement to your existing commercial driver's license. You don't need to apply for a new license, but you will have to pass the passenger vehicles knowledge test and a skills test in the type of vehicle you will be driving. You'll also need to complete any necessary medical certifications.

Yes, drivers with a CDL Bus endorsement must adhere to certain restrictions and limitations. These include following hours-of-service regulations, passing regular medical examinations, and maintaining a clean driving record. Additionally, bus drivers must not have any serious traffic violations while operating commercial vehicles and are subject to random substance abuse testing.