CDL Practice Test


As you prepare to earn your CDL in the state of Minnesota you’ll need to study for the written portion of the Minnesota CDL test. This site offers MN CDL practice tests to help you on your journey. Use this site as a study guide as you prepare to take the CDL Test in Minnesota. Questions on these practice tests cover topics from the MN CDL manual. You can take these practice tests as many times as you need to and the tests are free. Good luck as you look to obtain your Minnesota CDL. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the “Start Test” button below to begin.

1 / 40

Select the true statement in regards to handing triples and doubles

2 / 40

The 3 parts of the air brake system are: service brakes, parking brakes, and ____.

3 / 40

The best way to describe a dual air brake system is:

4 / 40

The two other places where the hazardous identification number must appear are:

5 / 40

Mirrors with a convex surface or "spot" mirrors _____.

6 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

7 / 40

These tires should have a minimum tread depth of 4/32 inches.

8 / 40

Cargo tanks ____.

9 / 40

You should___to reduce the air leakage rate.

10 / 40

Select the true statement about speed and stopping distance.

11 / 40

How many different hazard classes are there?

12 / 40

An "A/W" the first column of the hazardous materials table means:

13 / 40

What might happen if you swing wide to the left before you turn right?

14 / 40

There should be ___space between the upper and lower fifth wheel after coupling.

15 / 40

Which of the following is a recommended procedure when unloading the students?

16 / 40

When should you check your mirrors for a lane change?

17 / 40

The gauge that needs to come up to normal levels after starting the engine within a few seconds is _____.

18 / 40

When inspecting your bus, you must make sure that:

19 / 40

The emergency air line is _____and the service air line is____.

20 / 40

What are spring brakes?

21 / 40

Your engine runs a pump when you are delivering compressed gas. Should you turn off your engine before or after you unhook the hoses after finishing that delivery?

22 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

23 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

24 / 40

At around____the governor allows the air compressor to start pumping again:

25 / 40

What should you hook up before backing a tractor to a trailer for coupling?

26 / 40

Why should you cover cargo?

27 / 40

When driving a combination vehicle, the trailer breaks away severing the air lines. The trailer brakes should come on and ____.

28 / 40

Which is more likely to tip over due to the crack the whip effect?

29 / 40

Drivers placard their vehicle to _____ the risk.

30 / 40

Anti-lock brakes:

31 / 40

It is important to know the outage required for the liquids you carry because:

32 / 40

Where should you place your warning devices if you must stop on a one-way or divided highway?

33 / 40

Which of the following types of emergency equipment must you have on your bus?

34 / 40

Select the true statement in regards to when a bulk tank vehicle stops at an intersection on a slippery surface:

35 / 40

Select which is not an engine compartement belt:

36 / 40

Select the portion of the combination vehicle that is most likely to turn over suddenly when pulling a double trailer:

37 / 40

After coupling with a trailer, what position should the front trailer supports be in before driving away?

38 / 40

Select how brakes work on long, steep downgrades:

39 / 40

Select the statement that best explains the "crack-the-whip" effect.

40 / 40

When there is a hazardous materials emergency. You should:

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CDL Category Practice Tests

CDL Practice Test

How To Get A minnesota Commercial Drivers License

Minnesota has set specific requirements of a CDL license for the operation of specific vehicles. The first is a combination vehicle that exceeds a gross weight of 26,000 pounds. Any single vehicle that exceeds the 26,000 pounds also requires a CDL. Vehicles intended to transport more than 15 passengers, including the driver, fall under the commercial driver’s license requirement. Any vehicle that requires hazardous material placards must be driven by a CDL driver. Lastly, any school bus driver must have their CDL. Applicants may file for a Class A, B, or C commercial driver’s license. Each class has its own restricts for the vehicle size and type that may be legally driven.All applicants must be 18 years of age or older to apply for a commercial driver’s license. A Hazardous Materials Endorsement may only be obtained by those who are 21 years of age or older. All applicants must possess a DOT medical card or submit a medical examiner certificate upon applying for their commercial driver’s license.

Driving Record And Disqualifications 

  • Any conviction of driving an impaired vehicle within the past 24 months.
  • Current license is suspended, denied, canceled, or revoked.
  • Possessing a driver’s license from another state.

All CDL applicants must pass one or more knowledge tests and skills test to be eligible to receive their CDL.

H – Hazardous Materials
N – Tank Vehicle
P – Passenger Transport
S – School Bus
T – Doubles / Triples
X – Tanker and Hazardous Materials

Hit the Open Road

minnesota CDL License Test Tips

All applicants will be required to take one or more knowledge tests depending on the class and the endorsements they wish to obtain. Knowledge tests are given on paper and on the computer. All Class applicants must complete a 50 question knowledge test, with Class A applicants also required to complete 20 questions about combination vehicles. Endorsements require their own specific tests. For Passenger, Doubles/ Triples, and Tank Vehicle Endorsements applicants will be given a 20 question test. For School Bus Endorsement and Air Brake Restriction Removal a 25 question test will be given. A Hazardous Materials Endorsement requires a 30 question test. Test scores of 80 percent and higher are considered passed.

A skills test is required of all applicants to be taken in the type of vehicle in which they are seeking certification. The skills test is given in three different phases. These include the pre-trip inspection, basic control skills, and the road test. Applicants must pass all three phases of the skills test to receive their CDL. Additional skills tests are required for specific endorsements. These include Passenger and School Bus Endorsements as well as the Air Brake Restriction Removal.

Additional Information

Information on the Minnesota Department of Public Safety

The Minnesota Department of Public Safety provides administers CDL license requirements in Minnesota. To get more information contact them via:

Website:  https://dps.mn.gov/divisions/dvs/Pages/drivers-license-information.aspx#ClassA

Phone:  651.297.5029


Additional Minnesota CDL Helpful Links

Please use the links below to access more valuable Minnesota CDL testing resources and to learn more about practice driving tests for the state of Minnesota.