Minnesota Class A CDL Practice Test (MN) 8

4.9 out of 5 (70 votes)
80% Passing score
50 Questions
10 Mistakes allowed
Embarking on the process of obtaining a Class A Commercial Driver's License (CDL) in Minnesota in 2026 is a significant step. To aid in this endeavor, we offer the eighth in our series of Minnesota CDL practice tests, designed specifically for Class A CDL applicants. This DMV practice test is a valuable tool for preparing for the actual written permit test. With a comprehensive set of 50 CDL questions and answers, it covers essential topics like pre-trip vehicle inspection, basic vehicle control, gear shifting, navigating hills and steep downgrades, communication on the road, speed control, and drug and alcohol awareness. Achieving a score of at least 40 correct answers is necessary to pass, mirroring the requirements of the real CDL written test. What sets this Minnesota class A CDL practice test apart is its accessibility and customization. It's a free resource, providing the same level of detail and learning opportunity as paid versions. Yet, it does not compromise on the quality of content or the range of topics covered. The freedom to customize your practice sessions is a standout feature. Focus on areas that you find challenging, retake DMV practice tests to improve your score, and engage in practice sessions at your convenience. This flexibility ensures that your preparation is as efficient and effective as possible. Another key advantage of our Minnesota CDL class A practice test is its widespread availability. Accessible via mobile, desktop, and mobile apps, it offers the flexibility to study anytime, anywhere. This accessibility ensures that no matter your lifestyle or schedule, you can easily integrate practice sessions into your daily routine. By utilizing this Minnesota CDL practice test, you're not just preparing for a CDL general knowledge permit test in 2026; you're equipping yourself with the knowledge and confidence needed to excel in your career as a commercial driver. It's an opportunity to thoroughly prepare yourself for the challenges of the road and the responsibilities that come with holding a Class A CDL.
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Sample Minnesota CDL Test Questions - General Knowledge

Question 1

Subject to the applicable restrictions, which materials may be transported on a bus carrying passengers?

  1. A Permitted quantities of small-arms ammunition
  2. B Emergency hospital supplies
  3. C Emergency shipments of drugs
  4. D All of these answers are correct

Correct answer: D – All of these answers are correct

Hazardous materials are generally restricted on passenger-carrying buses, but specified exceptions include permitted small-arms ammunition and emergency shipments of drugs, chemicals, and hospital supplies. Each shipment must meet the conditions and quantity limitations that apply to passenger-carrying vehicles. The permission is not a general authorization to carry unrestricted hazardous materials.

Source: Minnesota Commercial Driver’s License Manual — § 4.2.2, “Forbidden Hazardous Materials”., 49 CFR § 177.870 — Regulations for passenger carrying vehicles.

Question 2

What is the primary purpose of hazardous-material placards?

  1. A To warn others about the hazardous materials being transported
  2. B To show that the vehicle has an auxiliary braking system
  3. C To identify every vehicle carrying an oversize load
  4. D To display the carrier’s operating authority

Correct answer: A – To warn others about the hazardous materials being transported

Placards warn road users and emergency personnel that hazardous materials are present. Their colors, symbols, and hazard-class information communicate the type of danger associated with the cargo. They are displayed on the outside of vehicles or bulk packages when the hazardous-material rules require them.

Source: Minnesota Commercial Driver’s License Manual — § 2.23, “Hazardous Materials”.

Question 3

In Minnesota, which vehicle is generally required to stop before crossing railroad tracks?

  1. A Every commercial motor vehicle
  2. B A bus carrying passengers or a vehicle required to display hazardous-material placards
  3. C A commercial vehicle traveling at night
  4. D Only a vehicle approaching an unmarked crossing

Correct answer: B – A bus carrying passengers or a vehicle required to display hazardous-material placards

Buses carrying passengers, school buses, and vehicles covered by the hazardous-material crossing rule generally must stop between 15 and 50 feet from the nearest rail. The driver must look and listen for approaching rail equipment and cross only when it is safe. Designated exempt crossings and other stated exceptions must also be observed.

Source: Minnesota Commercial Driver’s License Manual — Part A, “Railroad Grade Crossing”., Minn. Stat. § 169.28 — Certain Vehicles to Stop at Railroad Crossing., 49 CFR § 392.10 — Railroad grade crossings; stopping required.

Question 4

What is the main purpose of signaling while operating a commercial vehicle?

  1. A To permit routine cell-phone use
  2. B To make other drivers reduce speed
  3. C To replace mirror checks before a maneuver
  4. D To tell other road users what you intend to do

Correct answer: D – To tell other road users what you intend to do

Signals communicate your intentions to other road users. Use them early enough to provide useful warning before turns, lane changes, and other maneuvers, and continue signaling as appropriate. Signaling does not replace checking mirrors and confirming that the path is clear before moving.

Source: Minnesota Commercial Driver’s License Manual — § 2.5.1, “Signal Your Intentions”.

Question 5

Which checks belong in an inspection of a trailer’s air and electrical connections?

  1. A Confirm that all lines are free from damage
  2. B Verify that air lines are properly connected to the glad hands and have no leaks
  3. C Make sure the electrical cord is firmly plugged in and secured
  4. D All of these answers are correct

Correct answer: D – All of these answers are correct

Inspect the air lines for damage, proper glad-hand connections, leaks, secure routing, and enough slack for turns. The trailer’s electrical cord must be firmly plugged in and secured. Defective or loose connections can interfere with the trailer’s brakes, lights, or other electrical equipment.

Source: Minnesota Commercial Driver’s License Manual — § 6.5.1, “Additional Things to Check During a Walk-around Inspection”.

Question 6

If a coolant recovery container is not pressurized, what may you do while the engine is hot?

  1. A Check the coolant level and add coolant through that container if needed
  2. B Remove the radiator cap immediately
  3. C Replace the coolant with plain water only
  4. D Drain the engine oil through the coolant container

Correct answer: A – Check the coolant level and add coolant through that container if needed

A sight glass or see-through recovery container allows the coolant level to be checked while the engine is hot. If the container is not part of the pressurized system, its cap may be removed and coolant added at operating temperature. Never open the radiator cap or another pressurized component until the system has cooled.

Source: Minnesota Commercial Driver’s License Manual — § 2.14.1, “Engine Coolant”.

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