Michigan CDL General Knowledge Test (MI) 5

5 out of 5 (67 votes)
80% Passing score
50 Questions
10 Mistakes allowed
Get ready to ace your Michigan CDL General Knowledge Test with our comprehensive practice exam! This is the fifth installment in our series of CDL practice tests, designed to provide you with a realistic testing experience. Our DMV practice test features 50 carefully crafted DMV questions, ensuring you cover a wide array of topics essential for your success. Drawing directly from the Michigan CDL Driver's Manual, each question on our test reflects the content you'll encounter on the actual state exam in 2026. We understand the importance of authentic practice, which is why we've modeled our Michigan general knowledge test questions and answers on the same source used for the real CDL permit test. If it's in the manual, it could be on our DMV practice test; if it's not, you won't need to worry about it here. Our commitment to accessibility and quality education is evident through our offer of a completely free Michigan drivers practice test. We believe in providing equal opportunities for all aspiring CDL holders, without the burden of additional costs. This CDL practice test rivals any paid version available, packed with features and learning opportunities that are second to none. The format of our Michigan CDL general knowledge practice test mirrors that of the actual DMV written test, utilizing multiple-choice and true/false questions. This design helps you practice critical thinking and the process of elimination, key strategies for selecting the correct answers during your real 2026 permit test. As you tackle our DMV CDL practice test, you'll find that the same set of questions is presented each time. This consistency allows you to revisit and reinforce your knowledge, ensuring you're fully prepared for every topic that might come your way. Prepare to conquer the Michigan CDL General Knowledge Test in 2026 with confidence and ease. Start your practice today and take a significant step towards achieving your CDL!
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Sample Michigan CDL Test Questions - General Knowledge

Question 1

A yellow warning sign shows the roadway curving left, with an advisory speed plaque below it. What does the sign tell you?

This sign warns drivers to ____________.
  1. A Reduce speed for a curve to the right
  2. B Reduce speed for a curve to the left
  3. C Accelerate before making a left turn
  4. D Prepare for a sharp right turn

Correct answer: B – Reduce speed for a curve to the left

The warning symbol shows that the road curves to the left. In Michigan, an advisory speed plaque displays the recommended speed for negotiating the curve under favorable conditions. Reduce speed before entering and maintain a speed appropriate for the vehicle and current roadway conditions.

Source: What Every Driver Must Know — Ch. 5, “Signs, Pavement Markings and Signals” — “Warning signs” (October 2025).

Question 2

Which items should be checked on every tire during a commercial-vehicle inspection?

  1. A Tread depth
  2. B Overall tire condition
  3. C Proper inflation
  4. D All three items

Correct answer: D – All three items

Every tire should be checked for tread depth, physical condition and proper inflation. Look for uneven wear, cuts, exposed material, tread separation and damaged valve stems or caps. Use a tire gauge to verify pressure rather than relying on appearance or kicking the tire.

Source: Michigan Commercial Driver License Manual — § 11.2, “External inspection” — “Tires”

Question 3

On a Michigan roadway, your signal turns green while vehicles still occupy the intersection and leave no clear path. What should you do?

  1. A Remain outside the intersection until the path clears
  2. B Enter the intersection and wait there
  3. C Sound the horn and proceed between vehicles
  4. D Change lanes inside the intersection to get around them

Correct answer: A – Remain outside the intersection until the path clears

Wait outside the intersection and yield to vehicles that are still within it. Proceed only after they have cleared and you have an unobstructed path. Entering prematurely can interfere with other traffic and leave your commercial vehicle stopped within the intersection.

Source: What Every Driver Must Know — Ch. 4, “Traffic Laws” — “Right of way at intersections” (October 2025).

Question 4

If speed doubles under the same conditions, approximately how much longer does braking distance become?

  1. A Two times longer
  2. B Four times longer

Correct answer: B – Four times longer

Doubling speed makes braking distance approximately four times longer under comparable conditions. For example, increasing from 20 mph to 40 mph produces about four times the braking distance. Perception and reaction distances also contribute to total stopping distance, making higher speeds especially hazardous.

Source: Michigan Commercial Driver License Manual — § 2.6.1, “Stopping distance” — “The effect of speed on stopping distance”

Question 5

As a person’s blood alcohol concentration rises, what happens to the danger posed by driving?

  1. A The effects of alcohol become weaker
  2. B The person becomes more aware of every impairment
  3. C The person becomes increasingly dangerous behind the wheel
  4. D The body eliminates alcohol more quickly

Correct answer: C – The person becomes increasingly dangerous behind the wheel

As BAC rises, alcohol affects more of the brain and further reduces safe-driving ability. Judgment and self-control are affected early, and the drinker may not recognize the degree of impairment. Higher concentrations increasingly interfere with vision, coordination and muscle control.

Source: Michigan Commercial Driver License Manual — § 2.22.2, “Alcohol” — “Alcohol and the brain”

Question 6

On a Michigan road, what does a yellow warning sign displaying a Y-shaped symbol indicate?

This sign warns drivers to _____________.
  1. A A T-intersection is ahead
  2. B A Y-intersection is ahead
  3. C A construction zone begins ahead
  4. D The roadway dips at an intersection

Correct answer: B – A Y-intersection is ahead

The sign warns that the roadway ahead forms a Y-shaped intersection or split. Reduce speed as necessary and watch the roadway configuration and surrounding traffic. The sign itself warns of the intersection’s shape; follow any separate signs or signals that assign right of way.

Source: What Every Driver Must Know — Ch. 5, “Signs, Pavement Markings and Signals” — “Warning signs” (October 2025).

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