Michigan CDL Class B Practice Test (MI) 3

4.7 out of 5 (141 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Welcome to the third installment of our CDL practice tests, specifically designed for Michigan's aspiring Class B CDL holders. With a focus on practicality and relevance, this test is a crucial tool for those preparing to ace their commercial driver's license test in 2026! This 20-question Michigan CDL test is meticulously crafted to ensure a comprehensive understanding of various critical topics. Each sample permit test question is a step closer to your goal, testing your knowledge on crucial subjects like pre-trip vehicle inspections, basic vehicle control, and gear shifting. Yes, we've included both upshifting and downshifting! But it's not just about the mechanics of driving. You'll also face questions on navigating hills and downgrades, effective communication with fellow drivers, speed control, and the essential awareness of drugs and alcohol's impact on driving. Our Michigan CDL class B practice test stands out by offering end-of-test summaries. These summaries are not just a scorecard; they provide insight into the questions you missed, coupled with the correct answers. This feedback loop is invaluable for learning and improving your test-taking strategy. Real-world scenarios are another highlight of our Michigan DMV general knowledge practice test. These scenarios bring the dry theory to life, helping you visualize and apply your knowledge to real-life situations you might encounter on the road. We understand that driving regulations can vary significantly from state to state. That's why our Michigan CDL Class B Practice Test is tailored to Michigan's specific driving laws, regulations, and road signs. This state-specific focus ensures that you're not just preparing for a CDL test in 2026 but also gearing up for the real driving challenges in Michigan. As you take this test, remember, it's more than just a preparation tool. It's a comprehensive guide to ensure you're ready not just to pass the exam but to be a safe, knowledgeable, and responsible driver on Michigan roads!
FREE CDL Practice Test App
Pass your Michigan CDL General Knowledge test with the NextDoorDriving app. Real questions and answers—100% free and ad-free.
Download on the App Store

Sample Michigan CDL Test Questions - General Knowledge

Question 1

An unblocked cargo article is longer than 5 feet but no longer than 10 feet. What is the minimum number of tiedowns required?

  1. A 1
  2. B 2
  3. C 3
  4. D 4

Correct answer: B – 2

Federal cargo-securement rules require at least two tiedowns for an unblocked article longer than 5 feet but no longer than 10 feet, regardless of its weight. Different minimums apply to shorter articles and to cargo that is blocked or immobilized against forward movement. Additional tiedowns are required as longer articles extend beyond 10 feet.

Source: 49 CFR § 393.110(b) – Additional Requirements for Determining the Minimum Number of Tiedowns

Question 2

Which statement correctly distinguishes GCW from GCWR?

  1. A GCW is a single vehicle’s actual weight; GCWR is its cargo capacity
  2. B GCW is trailer weight only; GCWR is power-unit weight only
  3. C GCW is the combination’s actual loaded weight; GCWR is its applicable weight rating
  4. D GCW and GCWR are the same measurement

Correct answer: C – GCW is the combination’s actual loaded weight; GCWR is its applicable weight rating

GCW describes the actual weight of the loaded combination. Under the federal CDL definition, GCWR is determined from the manufacturer’s displayed power-unit value or from the applicable combined GVWRs or GVWs, using the method specified in the regulation. Actual combination weight and the applicable rating are not interchangeable terms.

Source: Michigan Commercial Driver’s License Manual — § 3.2.1, “Definitions You Should Know”, 49 CFR § 383.5 – Definitions

Question 3

Which description best defines a driving hazard?

  1. A A road condition or road user that presents a possible danger
  2. B Only a solid object blocking the traffic lane
  3. C Only something that completely closes the roadway
  4. D An event whose outcome depends entirely on chance

Correct answer: A – A road condition or road user that presents a possible danger

The Michigan CDL manual defines a hazard as a road condition or road user—such as a driver, bicyclist, or pedestrian—that presents a possible danger. Hazards are not limited to objects physically blocking the lane. Recognizing them early gives the driver time to adjust speed, position, or direction safely.

Source: Michigan Commercial Driver’s License Manual — § 2.8.1, “Importance of Seeing Hazards—What Is a Hazard?”

Question 4

What are the two air lines found between the units of an air-braked combination vehicle?

  1. A Service and emergency
  2. B Service and brake
  3. C Brake and emergency
  4. D Brake and pressure

Correct answer: A – Service and emergency

A combination vehicle has a service line and an emergency line between its connected units. The service line, also called the control or signal line, carries pressure used to apply the trailer service brakes. The emergency or supply line fills the trailer air tanks and controls the emergency brakes if pressure is lost.

Source: Michigan Commercial Driver’s License Manual — § 6.2.4, “Trailer Air Lines”

Question 5

When assisting an injured person at a crash scene, which actions are recommended?

  1. A Move a severely injured person only if fire or traffic creates danger
  2. B Use direct pressure to control heavy bleeding
  3. C Keep the injured person warm
  4. D All of the above

Correct answer: D – All of the above

Michigan’s CDL manual says to stay out of the way if a qualified person is already providing assistance. Otherwise, do not move a severely injured person unless fire or passing traffic makes movement necessary. Apply direct pressure to control heavy bleeding and keep the injured person warm while awaiting emergency help.

Source: Michigan Commercial Driver’s License Manual — § 2.20.3, “Care for the Injured”

Question 6

Which condition may be the only warning that a rear tire has failed?

  1. A A low-air-pressure alarm
  2. B A quiet hissing sound
  3. C Heavy thumping or vibration
  4. D An immediate, sharp reduction in speed

Correct answer: C – Heavy thumping or vibration

The Michigan CDL manual lists heavy thumping or vibration as a major sign that a tire has gone flat, and it may be the only warning of a rear-tire failure. A loud bang can also signal a blowout. Heavy steering more commonly indicates that a front tire has failed.

Source: Michigan Commercial Driver’s License Manual — § 2.17.4, “Tire Failure—Recognize Tire Failure”

More Michigan CDL Practice Tests
Other CDL Endorsements