Michigan DOT inspection requirements for commercial vehicles are set by the Michigan State Police Commercial Vehicle Enforcement Division, which enforces nearly all federal motor carrier safety rules against both interstate and intrastate operators. Every commercial motor vehicle on Michigan roads must pass a comprehensive annual inspection, carry proof of that inspection, and be ready for roadside checks that can put the truck or driver out of service on the spot. Drivers also complete written inspection reports at the end of each workday, and carriers keep maintenance, hours-of-service, and fuel-tax records for defined periods that auditors will ask to see.
Which Rules Apply in Michigan
Michigan’s Motor Carrier Safety Act, at MCL 480.11a, adopts large portions of Title 49 of the Code of Federal Regulations directly into state law. That includes the hazardous materials regulations at 49 CFR Parts 105–180 and the motor carrier safety regulations at Parts 382, 383, 385, 387, 390–393, and 395–399.1Michigan Legislature. MCL 480-11a Where the federal text names the FMCSA or U.S. DOT as the enforcing authority, Michigan substitutes the Department of State Police. Where “interstate” appears, Michigan reads it to include intrastate operations. A carrier running routes entirely within Michigan therefore faces essentially the same standards as one crossing state lines.
The Michigan Vehicle Code (Act 300 of 1949) adds equipment requirements at Sections 257.683 through 257.714, covering brakes, headlamps and tail lamps, mirrors, tires, mufflers, windshield wipers, and other safety equipment. Section 257.683 authorizes officers to stop and inspect any vehicle suspected of being in unsafe condition and to issue a citation for defective equipment. These equipment violations are civil infractions.
What Roadside Inspectors Check
Michigan officers use the standardized inspection levels developed by the Commercial Vehicle Safety Alliance. A Level I inspection is the full walk-around plus under-vehicle examination of both the driver and the truck. Level II covers what an officer can see without going underneath. Level III is driver-only: credentials, hours-of-service records, and seatbelt use. Level VI applies to hazardous materials. Officers choose the level based on the stop, and any inspection can escalate if problems appear.
Regardless of level, inspectors concentrate on the components most closely tied to crash risk:
- Brakes: adjustment, air pressure, lines, drums and rotors, and the parking brake system.
- Tires and wheels: tread depth, inflation, sidewall damage, lug nuts, and wheel cracks.
- Lights and reflectors: headlamps, tail lamps, turn signals, clearance lights, and reflective tape.
- Steering: free play in the wheel, tie rods, drag links, and power steering leaks.
- Coupling devices: fifth-wheel connections, kingpins, and safety chains on towed units.
- Exhaust system: leaks near the cab, missing or damaged components, and secure mounting.
- Frame and suspension: cracked or broken rails, spring hangers, and shock absorbers.
Driver credential checks confirm a valid commercial driver’s license with the correct endorsements, a current medical examiner’s certificate, and electronic logging device records.2Federal Motor Carrier Safety Administration. Medical Officers cross-check the CDL against the Commercial Driver’s License Information System for suspensions or revocations.
The Daily Driver Vehicle Inspection Report
Federal rules require every driver to complete a written inspection report at the end of each workday for every vehicle operated. The report must cover at least eleven categories: service brakes, parking brake, steering, lights and reflectors, tires, horn, windshield wipers, mirrors, coupling devices, wheels and rims, and emergency equipment.3eCFR. 49 CFR 396.11 – Driver Vehicle Inspection Report(s) If nothing is wrong, no report is needed. When a defect is found, the carrier must repair any safety-related deficiency before the vehicle returns to service and must certify in writing that the repair was made or that no repair was necessary.
Carriers keep these reports and repair certifications for at least three months.3eCFR. 49 CFR 396.11 – Driver Vehicle Inspection Report(s) That is a short window, but enforcement officers routinely ask for them during roadside inspections and audits. Missing or blank reports invite deeper scrutiny. Electronic reports are acceptable if they meet the formatting requirements.
The Annual Periodic Inspection
Every commercial motor vehicle must pass a comprehensive periodic inspection at least once every twelve months. It must cover, at minimum, the parts and accessories in Appendix A to 49 CFR Part 396: brake system, exhaust, frame, fuel system, lighting, cargo securement, and more.4eCFR. 49 CFR 396.17 – Periodic Inspection Each vehicle in a combination counts separately. A tractor pulling a semitrailer means two inspections.
Proof of the most recent passing inspection must be on the vehicle at all times. Acceptable proof is either the full inspection report or a sticker or decal showing the inspection date, the name and address of the entity holding the report, an identifier for the vehicle, and a certification that it passed.4eCFR. 49 CFR 396.17 – Periodic Inspection Operating without a current annual inspection is one of the sixteen violations that automatically fails a new entrant safety audit, so lapses carry consequences beyond the roadside citation.
Records to Keep and How Long
Maintenance and Repair
Carriers must maintain records of the nature and date of every inspection, repair, and maintenance activity performed on each vehicle. Those records stay where the vehicle is housed or maintained for one year, plus an additional six months after the vehicle leaves the carrier’s control.5eCFR. 49 CFR 396.3 – Inspection, Repair, and Maintenance The eighteen-month tail is designed to catch carriers who dump records when they sell or decommission a truck. In a compliance review, auditors request these files for every vehicle operated during the review period, and paperwork gaps generate violations just as readily as mechanical defects.
Hours of Service and ELD
Drivers record duty status for each twenty-four-hour period, and since December 2017 most must do so on an electronic logging device. Limited exceptions apply to drivers who log fewer than eight days in any thirty-day period, driveaway-towaway operations, and pre-2000 model year vehicles. Drivers submit their records to the carrier within thirteen days, and carriers retain them for at least six months from receipt.6eCFR. 49 CFR 395.8 – Driver’s Record of Duty Status Drivers also keep the previous seven consecutive days of records in their possession while on duty.
IFTA Fuel Tax
Carriers operating vehicles over 26,000 pounds gross vehicle weight that travel outside Michigan need an International Fuel Tax Agreement license. Michigan charges no fee for the license or decals, but quarterly returns are required even during periods with no operations. The quarterly deadlines are April 30, July 31, October 31, and January 31 for the preceding quarter. Fuel and mileage records must be kept at least four years from the return’s due date or filing date, whichever is later.7State of Michigan. International Fuel Tax Agreement (IFTA) That four-year window is much longer than the six-month hours-of-service window, and carriers who treat all records the same often destroy fuel documentation too soon.
Out-of-Service Orders
When a critical safety violation appears at inspection, the officer can declare the vehicle or driver out of service immediately. An out-of-service order means the vehicle cannot move, or the driver cannot drive, until the problem is fixed. The specific thresholds are published each year by the Commercial Vehicle Safety Alliance. Common vehicle triggers include cracked, missing, or badly out-of-adjustment brake components; tires below the legal tread minimum or with exposed body cords; inoperable rear lighting; and steering components with excessive free play or visible damage.
Driver out-of-service orders typically result from a suspended or expired CDL, no valid medical certificate, exceeding hours-of-service limits, or a positive alcohol or controlled substances test. Operating after being placed out of service carries a separate penalty on top of the original violation.
Under Michigan’s Vehicle Code, defective-equipment citations such as bad brakes, inoperable lights, or bald tires are civil infractions. Michigan law allows courts to waive the fine for a defective-equipment citation under Section 257.683 if the driver shows the vehicle has been repaired. The waiver is unavailable to carriers with habitual violations, and the underlying infraction stays on the record whether or not the fine is paid.
What Non-Compliance Costs
The FMCSA adjusts its civil penalty schedule for inflation each year. Under the current schedule, a driver who operates a commercial vehicle while under an out-of-service order faces up to $2,364 per violation. A carrier that requires or permits a driver to operate during an out-of-service period faces up to $23,647 per violation. Operating an out-of-service vehicle before repairs are completed costs the driver up to $2,364 per occurrence and the carrier up to $23,647.8Federal Register. Revisions to Civil Penalty Amounts, 2025
Penalties climb steeply when a carrier defies operational orders. Continuing to operate after a federal cease-operations order can cost up to $34,116 per day. Operating during a suspension for failing to pay penalties runs up to $19,246 per day.8Federal Register. Revisions to Civil Penalty Amounts, 2025 Daily penalties at those levels can shut a small carrier down in weeks.
How Violations Follow the Carrier
Every roadside inspection feeds the FMCSA’s Compliance, Safety, Accountability program through the Safety Measurement System. The system sorts violations into seven categories called BASICs: Unsafe Driving, Crash Indicator, Hours-of-Service Compliance, Vehicle Maintenance, Controlled Substances and Alcohol, Hazardous Materials Compliance, and Driver Fitness.9Federal Motor Carrier Safety Administration. Safety Measurement System (SMS) Methodology Each violation carries a severity weight, recent violations count more heavily than older ones, and carriers are ranked against peers of similar size. A carrier above the intervention threshold in any BASIC can expect warning letters, targeted inspections, or a full compliance review.
Separately, the FMCSA assigns a safety rating of satisfactory, conditional, or unsatisfactory based on compliance reviews that evaluate management controls across driver qualification, vehicle maintenance, hours of service, and financial responsibility.10eCFR. 49 CFR 385.5 – Safety Fitness Standard The rating process looks at noncompliance with “acute” regulations (where a single violation shows a breakdown in controls) and patterns of noncompliance with “critical” regulations (where repeated violations show systemic failure).11Legal Information Institute. 49 CFR Appendix B to Part 385 – Explanation of Safety Rating Process An unsatisfactory rating can disqualify a carrier from hauling certain freight and makes government contracts and affordable insurance nearly out of reach.
Contesting a Violation
Operators who disagree with a Michigan enforcement action can seek review through the Department of State Police. A carrier whose application for a certificate of authority is denied, or who faces another adverse decision, must first request review by the director or a designee before pursuing further appeal under Michigan’s Administrative Procedures Act.12Department of State Police. Michigan Administrative Code – Motor Carriers If internal review does not resolve the dispute, the carrier can move to an administrative hearing and ultimately to circuit court.
Federal penalties follow a separate track. When the FMCSA issues a Notice of Claim, the carrier has thirty days to respond by paying the full amount, requesting an administrative adjudication hearing, or agreeing to binding arbitration (which requires admitting liability while disputing the amount).13eCFR. 49 CFR 386.14 – Notice of Claim Reply Missing that thirty-day window can produce a default order that makes the proposed penalty final. If the case goes to adjudication, the reply must admit or deny each allegation and raise any affirmative defenses. Either party can petition for review of the administrative law judge’s decision, with reply briefs due within thirty days of the appeal brief.14eCFR. 49 CFR 386.62 – Review of Administrative Law Judge’s Decision Judicial review in federal court is available after the agency process is exhausted.