Trucking companies in Michigan: auto freight, the Canada border and frost laws

This report is for Michigan manufacturers, suppliers and distributors choosing a carrier, drivers comparing fleets, and B2B sellers whose customers are trucking companies: customs brokers, insurers, dealers, repair shops and software vendors.

Michigan trucking in Census data

County Business Patterns 2023, NAICS 484 (Truck Transportation), state of Michigan:

Specialized long-distance carriers (car haulers, flatbed steel, heavy haul) pay the most, $78,884 on average, which fits a state that ships finished vehicles, coils and machinery.

In broader bands, 4,677 establishments have 1 to 19 employees, 450 have 20 to 99 and 89 have 100 or more. The count covers locations with paid employees; owner-operators with no staff, and companies' own private fleets, are counted elsewhere or not at all.

From Wayne to Kent

The three metro Detroit counties have 2,881 establishments (55.2%) and 22,552 employees (44.7%). West Michigan runs bigger: Kent County averages 20.8 employees per establishment and Ottawa 22.7, against 7.8 in Wayne.

The busiest truck border with Canada

Bureau of Transportation Statistics border crossing data, from US Customs and Border Protection, count inbound truck crossings by port. In 2025, Detroit had 1,132,114 and Port Huron 1,060,776, the two busiest ports on the northern border, ahead of Buffalo Niagara Falls (865,370). Together they handled 41.6% of the border's 5,267,459 inbound truck crossings, about 6,000 trucks a day. Cross-border carriers need customs entries filed before the truck reaches the bridge, and dispatch that plans around wait times.

Private fleets outnumber for-hire carriers

FMCSA's Company Census File (updated 29 October 2026), active property carriers with at least one power unit and a Michigan address:

Michigan's for-hire carriers are also bigger than most: only 56.7% run a single truck, against 76.4% in Florida. Their cargo lists lean industrial: 18.9% motor vehicles, 18.6% large machinery, 13.8% logs and lumber, 12.0% grain and 10.4% metal sheets and coils. Cargo types are self-reported by carriers, and FMCSA's open-data file doesn't always match a carrier's own SAFER record, so treat these shares as indicative. Errors happen in fleet sizes too (one Michigan record lists 17,950 power units and four drivers), so check any fleet in SAFER.

Universal Logistics and the largest registered fleets

Universal Logistics Holdings, Inc., 12755 E. Nine Mile Road, Warren, is the SEC-listed trucking company headquartered in Michigan. Its 10-K for 2025 reports operating revenues of $1,558,397,000, down 15.6% from $1,846,035,000, and about 10,525 employees in the US, Mexico and Canada. Automotive work was about 45% of revenue and General Motors about 25%. It operates through subsidiaries with their own USDOT numbers; UACL Logistics LLC, trading as Universal, lists 475 power units in SAFER.

Large fleets registered in Michigan, from SAFER snapshots as of 28 October 2026:

Two of the largest haven't filed an update in more than two years, a reminder that even big fleets' register entries lag.

Michigan's own rules

The Michigan Center for Truck Safety's driver guidebook (21st edition) sets out the state layer:

• Operating authority. A for-hire carrier of property or passengers needs authority. Intrastate authority is applied for through the Commercial Vehicle Enforcement Division's Regulatory and Credentialing Unit; interstate authority comes from FMCSA.
• Frost laws. When spring weight restrictions are in force, axle loads drop 25% on rigid roads and 35% on flexible ones, and vehicles of 10,000 pounds or more are limited to 35 mph on restricted routes. MDOT's truck map marks all-season and seasonal routes, and county and city limits apply too.
• Lane use. On freeways with three or more lanes each way, trucks over 10,000 pounds must use the two right-hand lanes.

To check a carrier: confirm its USDOT status, authority and MCS-150 date in SAFER; ask for intrastate authority if the load stays in Michigan; get insurance naming you (at least $750,000 for interstate general freight under 49 CFR 387.9); and for spring loads, ask how it plans around frost-restricted roads.

Selling to Michigan trucking companies

The for-hire market has an unusually solid middle: 1,818 carriers with 10 or more trucks, and 539 Census establishments with 20 or more employees. Those fleets buy telematics, trailers, maintenance and cross-border services through an operations or safety manager. Automotive suppliers' schedules drive the calendar, and model changeovers and plant shutdowns move volume more than seasons do.

Illustrative example. The broker, its fees and its rates are invented; the counts are FMCSA and BTS data above.

Ambassador Entry Services (ambassador-entry.example) is a customs broker for carriers. Michigan has 1,283 interstate for-hire carriers with 10 or more power units. If a quarter of them run regular loads into Canada, that's about 320 fleets; two contacts each is 640 people, and a 5% reply rate gives 32 conversations. If one in four signs, 8 carriers at $1,500 a month is $144,000 a year. Bebop can find cross-border carriers that match a description like that and research each one first.

Subject: [company]'s loads at [Detroit or Port Huron]

Hi [first name],

[Company] runs [number] trucks out of [city], and I'd guess a good share cross at [port] each week. With about 6,000 trucks a day crossing at Detroit and Port Huron, a missing entry costs a driver hours.

We file entries before the truck leaves your yard and alert dispatch if anything is held.

Worth a 15-minute call on [day] to see if it fits your lanes?

[Your name]

Sources for Michigan names

Next step: compare Michigan's industrial fleets with the port-driven market in trucking companies in Los Angeles.