What a Michigan CDL is and who needs one
A Commercial Driver's License (CDL) in Michigan is required to operate a truck, bus, or other commercial vehicle above a certain weight. The Michigan Secretary of State issues CDLs, and you cannot legally drive these vehicles without one—even if you hold a regular driver's license.
You need a Michigan CDL if you operate a vehicle with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or any vehicle designed to transport 16 or more passengers including the driver. Some vehicles below 26,001 pounds also require a CDL depending on their use and cargo type. The specific rules depend on what you're hauling and how the vehicle is classified.
Michigan recognizes three classes of CDL: Class A (tractor-trailers and most heavy combinations), Class B (straight trucks and buses), and Class C (smaller commercial vehicles). Your class determines what you can legally operate.
Key Takeaways
- Michigan CDLs are issued by the Secretary of State and require passing a written knowledge test, a skills test, and a medical examination.
- You must hold a valid Michigan regular driver's license before you can obtain a CDL, and you must be at least 18 years old (21 for interstate commerce).
- The written test covers general knowledge, air brakes, and any endorsements you need (hazmat, tanker, doubles, passenger).
- The skills test includes a pre-trip vehicle inspection, a basic control test, and an on-road driving test administered by an examiner.
- A medical certificate from a certified medical examiner is required and must be renewed every two years.
Before you test: requirements and the medical certificate
You must be at least 18 years old to obtain a Michigan CDL for intrastate driving (within Michigan only). If you plan to drive interstate (across state lines), you must be 21. You also need a valid Michigan regular driver's license in your possession before you explore for a CDL.
A medical certificate is mandatory and must be completed by a certified medical examiner listed on the Federal Motor Carrier Safety Administration (FMCSA) registry. This examiner checks your vision, hearing, blood pressure, and overall fitness to operate a commercial vehicle. The certificate is valid for two years from the date of examination. You cannot take the CDL test without this certificate, and you cannot renew your CDL without a current one.
To find a certified medical examiner in Michigan, visit the FMCSA National Registry at fmcsa.dot.gov and search by state and city. Many occupational health clinics, truck driving schools, and some primary care doctors perform these exams. The cost varies but typically ranges from $75 to $150.
The written knowledge test and endorsements
The Michigan CDL written test is administered at Secretary of State branch offices. You must pass the general knowledge test, which covers vehicle operation, safety, and road rules specific to commercial driving. The test is 50 questions, and you must score at least 80 percent to pass.
If your vehicle has air brakes, you must also pass the air brakes test (25 questions, 80 percent passing score). If you do not have air brakes on your vehicle, you can skip this test, but you will receive an air brake restriction on your license.
Endorsements are additional qualifications for specific cargo or vehicle types. Michigan offers endorsements for hazardous materials (H), tanker vehicles (N), doubles/triples (T), and passenger vehicles (P). Each endorsement requires passing a separate written test. You only need endorsements that match the work you plan to do. For example, if you will never haul hazmat, you do not need the H endorsement.
The skills test: vehicle inspection, control, and driving
After passing the written test, you must schedule a skills test with a Michigan Secretary of State examiner. This test has three parts and must be completed in one session using a vehicle that matches the class of CDL you are seeking.
The pre-trip inspection requires you to walk around and inspect the vehicle, pointing out safety-critical components and explaining what you are checking. You must identify items like lights, tires, brakes, mirrors, and coupling devices. The examiner is looking for your knowledge of the vehicle, not a perfect inspection—you need to demonstrate you understand what makes a vehicle safe to operate.
The basic control test takes place in a closed course or parking lot. You will perform maneuvers such as straight-line backing, offset backing, and alley docking. These tests measure your ability to control the vehicle in tight spaces without hitting cones or boundaries.
The on-road driving test lasts about 30 to 45 minutes. The examiner sits with you and observes your driving on public roads. You will demonstrate proper acceleration, braking, turning, lane changes, and responses to traffic situations. The examiner is assessing your safety awareness and compliance with traffic laws.
Where to test and what to bring
CDL tests are administered at Michigan Secretary of State branch offices. Not all branches offer CDL testing, so check the Secretary of State website to find a location near you that does. You can schedule your written test online or by phone.
For the written test, bring your medical certificate, valid Michigan driver's license, and proof of Social Security number (Social Security card, W-2, or tax return). Bring the same documents to your skills test, plus the vehicle you will be tested in and proof of vehicle ownership or authorization to use it.
The skills test examiner will need to see that the vehicle is properly registered and insured. If you are using a vehicle provided by an employer or training school, bring a letter from them authorizing the vehicle's use for testing.
Costs and timeline
The written test fee in Michigan is $20. The skills test fee is $100. The medical certificate costs $75 to $150 depending on the examiner. If you need endorsements, each endorsement test costs an additional $10.
The timeline depends on how quickly you schedule your tests. The written test can often be scheduled within days of explore. The skills test typically requires scheduling several weeks in advance, especially during busy seasons. Many people complete the written test first, then schedule the skills test once they pass. Some people attend a commercial driving school, which can take four to eight weeks and includes instruction, practice, and test scheduling.
Renewing and maintaining your Michigan CDL
A Michigan CDL is valid for four years. You must renew it before the expiration date shown on your license. Renewal requires a current medical certificate—if your medical certificate expires before your CDL, you cannot legally drive a commercial vehicle until you obtain a new one.
To renew, visit a Secretary of State branch office with your current CDL, a valid medical certificate, and proof of identity. A standard renewal does not require retesting unless you have had certain violations or your license was suspended. If you need to add or remove endorsements, you will need to pass the written test for those endorsements.
If your CDL has been suspended or revoked, you cannot straightforward renew it—you must follow Michigan's reinstatement process, which may include additional requirements depending on why it was suspended.
Frequently Asked Questions
Can I use my regular Michigan driver's license to drive a commercial vehicle while I wait for my CDL?
No. Once you have a valid regular driver's license, you cannot legally operate a commercial vehicle without a CDL, even for a single trip. Driving without the proper license class is a violation and can result in fines and criminal charges.
What happens if I fail the skills test?
You can retake the skills test. There is no waiting period between attempts in Michigan, but you must pay the $100 fee each time. Many people schedule a second attempt within a few weeks and use that time to practice or get additional instruction.
Do I need a CDL to drive a pickup truck or van for work?
Only if the vehicle's GVWR exceeds 26,001 pounds or it is designed to carry 16 or more passengers. Most pickup trucks and vans fall below this threshold and can be driven with a regular license. Check your vehicle's registration or door jamb for the GVWR to be certain.
Can I get a Michigan CDL if I have out-of-state driving violations?
Yes, but serious violations may disqualify you or delay your process. Contact the Michigan Secretary of State to discuss your specific situation before you explore. Some violations, such as DUI or reckless driving, can permanently bar you from obtaining a CDL.
How long does a medical certificate last, and when should I renew it?
A medical certificate is valid for two years from the examination date. You should schedule your renewal exam at least 30 days before expiration to avoid a gap in your driving authority. If your certificate expires while your CDL is still valid, you cannot legally drive a commercial vehicle until you obtain a new certificate.