Free Michigan CDL Practice Test
Michigan uses the national CDL manual and federal question pool. Practice every knowledge test here, then check Michigan’s own question counts, passing scores and fees below.
General Knowledge and every endorsement test at the length states use, three answer choices per question, scored at the real 80% pass mark with an explanation from the CDL manual for every answer.
Or start with a free 10-question drillYour rear drive wheels lock while braking and the rear of the vehicle starts to slide. What is the first step to correct the skid?
Michigan CDL knowledge tests
| Test | Questions | Correct to pass | Practice |
|---|---|---|---|
| General Knowledge | 50 | 40 | General Knowledge practice |
| Air Brakes | 25 | 20 | Air Brakes practice |
| Combination Vehicles | 20 | 16 | Combination Vehicles practice |
| Hazardous Materials | 30 | 24 | Hazardous Materials practice |
| Tank Vehicles | 20 | 16 | Tank Vehicles practice |
| Doubles and Triples | 20 | 16 | Doubles and Triples practice |
| Passenger Transport | 20 | 16 | Passenger Transport practice |
| School Bus | 20 | 16 | School Bus practice |
Practice before your MI knowledge tests
General Knowledge and every endorsement test at the length states use, three answer choices per question, scored at the real 80% pass mark with an explanation from the CDL manual for every answer.
Or start with a free 10-question drillTaking the tests in Michigan
- Where
- At a Secretary of State office, on a computer testing station. You may take only one test per day from each testing category.
- Commercial learner’s permit
- You must pass every required knowledge test before the CLP is issued, then hold it at least 14 days before the skills test.
- If you fail
- If you fail a knowledge test, wait one day before you retake it.
- Good to know
- Group B and C applicants take a 50-question General Knowledge test. The Group A knowledge test has 70 questions, which include the 20-question Combination Vehicles test. Skills tests are given by approved third-party driver testing businesses that set their own fees.
Michigan CDL fees
- Each CDL endorsement (paid after the skills test): $5
- Correcting your standard license to a CDL: $9
Michigan CDL test questions
How many questions are on the Michigan CDL permit test?
The Michigan General Knowledge test has 50 questions and you need 40 correct. Air Brakes: 25 questions, 20 to pass; Combination Vehicles: 20 questions, 16 to pass; Hazardous Materials: 30 questions, 24 to pass; Tank Vehicles: 20 questions, 16 to pass; Doubles and Triples: 20 questions, 16 to pass; Passenger Transport: 20 questions, 16 to pass; School Bus: 20 questions, 16 to pass.
Where do I take the CDL knowledge tests in Michigan?
At a Secretary of State office, on a computer testing station. You may take only one test per day from each testing category.
How much does a Michigan CDL permit cost?
the Michigan Secretary of State lists: Each CDL endorsement (paid after the skills test) $5; Correcting your standard license to a CDL $9.
What if I fail a CDL knowledge test in Michigan?
If you fail a knowledge test, wait one day before you retake it.
Ready for the knowledge tests?
General Knowledge and every endorsement test at the length states use, three answer choices per question, scored at the real 80% pass mark with an explanation from the CDL manual for every answer.
Or start with a free 10-question drillMore CDL practice
- CDL General Knowledge practice test
- CDL Air Brakes practice test
- CDL Combination Vehicles practice test
- CDL Hazardous Materials practice test
- CDL Tank Vehicles practice test
- CDL Doubles and Triples practice test
- CDL Passenger Transport practice test
- CDL School Bus practice test
- Illinois CDL practice test
- Pennsylvania CDL practice test
- Washington CDL practice test
- Missouri CDL practice test
Michigan facts are from the Michigan Secretary of State, checked October 2026: Michigan Secretary of State: applying for a CDL · 2024 Michigan CDL Manual, Section 1.
Original independent practice. Not affiliated with or endorsed by the Michigan Secretary of State, FMCSA or AAMVA.