Combination Vehicles Practice Test | Minnesota 2025 #2

Train for FREE online with our Minnesota 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 MN 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 20

Passing Score 16

Number of Tests 20

1 . When coupling:

You can assume all vehicles are the same.

Be sure that you are coupling correctly.

Cracks in the mounting are acceptable.

Incorrect coupling and uncoupling of combination vehicles can have extremely dangerous consequences.

2 . Before backing your tractor under the trailer, make sure your trailer brakes are:

Disengaged.

Locked.

Deactivated.

Dry.

Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. Before backing your tractor under the trailer while coupling, make sure your trailer brakes are locked.

3 . The trailer hand valve should:

Be used for parking.

Be used only to test the trailer brakes.

Be used together with the brake pedal.

Be used on slippery surfaces.

The trailer hand valve works the trailer brakes but should only be used when testing them. Using it while driving could create a skid. Never use the trailer hand valve while parking because doing so may release the air pressure from the braking system, releasing the brakes that are holding the vehicle in place.

4 . When driving a bobtail tractor, you should be aware that:

Bobtails stop very easily.

Bobtails cannot drive as fast as tractors with semitrailers.

Bobtails are more difficult to stop than tractors with semitrailers.

Bobtails are illegal in most states.

Bobtail tractors are tractors that are not attached to any semitrailers. When operating a bobtail, you should be aware that stopping can be difficult and that it will take a longer distance to bring the bobtail to a complete stop than it would a tractor attached to a loaded semitrailer.

5 . Rollovers happen when drivers:

Turn too quickly.

Do not driving fast enough.

Pay attention to the road.

Drive illegally.

A rollover happens as a result of a driver taking a turn at too high a speed. Be sure to take turns and curves safely and slowly.

6 . 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.

7 . Making a quick lane change while pulling multiple trailers is usually safer than making a quick lane change while pulling only one trailer.

True

False

Double and triple combinations are less stable than single commercial vehicles. They are more likely to roll over when being driven with quick movements. Doubles and triples must be driven very smoothly and gently.

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2025 Minnesota | Frequently Asked Questions

A CDL Class B license in Minnesota allows the holder to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or a vehicle towing another not exceeding 10,000 pounds. This includes buses, farm labor vehicles, and any vehicle designed to transport 24 passengers or more, including the driver.

A Class B CDL (Commercial Driver's License) in Minnesota allows the holder to operate single vehicles with a GVWR (Gross Vehicle Weight Rating) of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds. This includes straight trucks, large buses, segmented buses, and dump trucks with small trailers.

To acquire a Class B CDL license in Minnesota, you must be at least 18 years old (21 for interstate driving), have a valid Minnesota driver's license, pass a vision test, and successfully complete a knowledge test for the type of vehicle you plan to drive. Additionally, you must pass a skills test, which includes a pre-trip vehicle inspection, basic controls test, and on-road driving examination.

In Minnesota, you must be at least 18 years old to qualify for a Class B CDL license. However, it's important to note that while this age allows you to operate commercial vehicles within the state (intrastate), you must be at least 21 years old to drive commercial vehicles across state lines (interstate).

While not always necessary, specific endorsements may be required for a Class B CDL license in Minnesota depending on the type of vehicle you plan to drive or the cargo you intend to carry. These endorsements could include passenger, school bus, tanker, hazardous materials (HazMat), or combination vehicle endorsements. Each endorsement requires passing additional knowledge and skills tests.

The Class B CDL skills assessment in Minnesota encompasses three areas: pre-trip vehicle inspection, basic vehicle control, and on-road driving. The pre-trip inspection tests your ability to assess the safety of your vehicle. Basic control tests your ability to maneuver and control the vehicle. On-road driving tests your ability to safely operate the vehicle in various traffic situations.

Class B CDL license holders in Minnesota are restricted to operating vehicles under 26,001 lbs. They can't operate Class A vehicles unless they have the appropriate endorsements. Additionally, they may be limited by any restrictions noted on their license, such as "no air brake equipped vehicles", "automatic transmission only", or "no passengers" in commercial buses or vans.

Yes, in Minnesota, the written Class B CDL test is available in several languages other than English. However, federal regulations require that all CDL holders must be able to read and speak English sufficiently to converse with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.

Yes, you can request accommodations for the Class B CDL written exam if you have a disability. The Minnesota Department of Public Safety is committed to providing equal access to its services. Contact them directly or visit their website for information on how to request accommodations. It's advisable to make your request well in advance of your scheduled test date.

Yes, if you don't pass the Class B CDL written test in Minnesota, you can retake it. However, you must wait until the next day to retake the test. There is no limit to the number of times you can retake the test, but a retesting fee will be charged each time after the first two attempts.