Michigan CDL Study Guide
Michigan issues commercial driver licenses (CDLs) through the Michigan Department of State (Secretary of State). The process starts with a Commercial Learner's Permit, includes federal Entry-Level Driver Training, and ends with a skills test given by an approved driver testing business. Skills test fees vary by tester since the state does not set them.
Key Michigan numbers
- Minimum age (intrastate): 18
- Minimum age (interstate or hazmat): 21
- CLP hold before skills test: at least 14 days
- General Knowledge passing score: 80%
- General Knowledge test: ~50 questions
- Air Brakes test: ~25 questions (required if your vehicle has air brakes)
- Combination Vehicles test: ~20 questions (required for Class A)
Topics on the Michigan General Knowledge test
- Vehicle inspection (pre-trip, en-route, post-trip)
- Driving safely (speed management, space management, hazard perception)
- Transporting cargo safely
- Air brakes (if your vehicle is air-braked)
- Combination vehicles (Class A)
If you fail a test
If you fail a CDL knowledge or skills test in Michigan, you can retake it. Knowledge test retakes are scheduled at a Secretary of State office; skills test retakes are scheduled with your driver testing business. Test fees apply each time.
Frequently asked questions
How old do I have to be to get a Michigan CDL?
You must be at least 18 to get a Michigan CDL for driving inside Michigan. You must be 21 to drive across state lines or carry hazardous materials.
How long do I have to hold the Michigan CLP?
You must hold your Commercial Learneru0027s Permit for at least 14 days before scheduling the CDL on-road skills test.
Who gives the Michigan CDL skills test?
Skills tests are given by private driver testing businesses approved by the Michigan Department of State. The state does not give skills tests itself.
Do I need ELDT in Michigan?
Yes. First-time CDL applicants, upgrades, and H/P/S endorsements require federal Entry-Level Driver Training through an FMCSA-registered provider.
How much do Michigan CDL endorsements cost?
Each endorsement added to your Michigan CDL costs $5.
Where do I find the Michigan CDL Manual?
The Michigan CDL Manual is published by the Department of State and is available as a free PDF at michigan.gov/sos.
Free practice
Start a Michigan General Knowledge quiz →
Sources: Michigan CDL Manual (PDF) Michigan SOS CDL Manual landing page Michigan SOS Apply for CDL