How to Get Your Hazmat (CDL) Endorsement in Michigan
Governing body, experience requirements, exam details, and step-by-step instructions for Michigan. Last verified: February 2026.
Quick Facts
Hours Required
No minimum hours
Exam
MI CDL Hazmat Knowledge Test
Fee Range
~$7 endorsement [VERIFY]
Governing Body
MI Secretary of State (SOS)
Requirements
To add a Hazardous Materials (H) endorsement to a Michigan CDL, applicants must hold a valid Michigan CDL, complete the TSA Hazmat Threat Assessment (federal background check via IDEMIA), pass the Michigan Secretary of State Hazmat written knowledge test, and pay the endorsement fee. The endorsement renews with the CDL.
Steps to Apply
- 1
Hold a valid Michigan Commercial Driver License (CDL) Class A, B, or C.
- 2
Complete the TSA Hazmat Threat Assessment at universalenroll.dhs.gov and pay the federal fee (~$86.50).
- 3
Provide fingerprints at an approved location for the TSA background check.
- 4
Receive TSA approval and visit a Michigan SOS branch office to take the Hazmat written knowledge test.
- 5
Pay the Michigan SOS endorsement fee (~$7) and receive your updated CDL with the H endorsement.
Exam Details
The Michigan SOS Hazmat knowledge test covers DOT hazardous materials regulations including proper shipping names, hazard classes, placarding, labeling, loading and unloading, and emergency response. It is administered at Michigan SOS branch offices that handle CDL transactions. [VERIFY current question count and passing score at michigan.gov/sos]
Fees & Costs
Estimated total: ~$7 endorsement [VERIFY]
The TSA Hazmat Threat Assessment fee is approximately $86.50 (federal, paid to IDEMIA). The Michigan SOS CDL endorsement fee is approximately $7 [VERIFY current MI SOS CDL endorsement fee at michigan.gov/sos]. Total estimated cost: ~$93–$100.
Frequently Asked Questions
How long does the Michigan Hazmat CDL endorsement last?
The Hazmat endorsement in Michigan renews with your CDL every 4 years. A new TSA Hazmat Threat Assessment background check is required at each renewal.
Where can I take the Michigan Hazmat CDL knowledge test?
Michigan CDL knowledge tests, including the Hazmat test, are administered at Michigan Secretary of State branch offices that handle CDL transactions. Not all branches offer CDL testing — check michigan.gov/sos for participating locations.
What happens if I fail the Michigan Hazmat CDL test?
Michigan allows retakes of CDL knowledge tests but requires a waiting period between attempts. [VERIFY current Michigan SOS retake policy and waiting period at michigan.gov/sos]
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CDL Hazmat Prep
Hazmat placarding guide + endorsement test prep
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