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How to Read a USDOT Carrier Record

The fields on a USDOT carrier record, what each one can and cannot tell you, and the national FMCSA counts that put them in context.

4 min read

Shield with a check mark

Anyone can look up a carrier by its USDOT number. What comes back is mostly self-reported facts plus a few outcomes, and it is easy to read more into it than it says. This article walks through the fields that matter, with the national counts behind them so you can tell a normal record from an odd one.

Where the numbers come from

National counts are from the FMCSA Company Census and SMS open files, retrieved Oct 9, 2026 (census as of Oct 9, 2026; SMS as of Sep 13, 2026, 24-month window). No carrier is named here and we do not rank or score any carrier. The FMCSA lookup site returned an access error to our server, so the field descriptions follow the structure of the open census file, not screenshots of the lookup site.

Three numbers that frame everything

  • There are 2,223,415 active U.S. records.
  • 46% of them have not been updated in two years (1,021,328 records dated before Oct 9, 2024).
  • Only 2.3% carry a safety rating. No rating is the normal case.

Who is in the file

Active U.S. carriers by the number of trucks they report. Most are one-truck operations.

Active U.S. carriers by reported power units
Reported trucksActive records
1 truck1,178,221
2 to 4560,407
5 to 15186,198
16 to 5045,964
51 or more18,429

234,195 active records show 0 or blank power units and sit in no band. Source: FMCSA Company Census, aggregates, Oct 9, 2026.

Field by field

Key fields on a USDOT record and how they can mislead
FieldHow to use itWhen it misleadsNational count
StatusAnything other than active is a stop.Active on the census is not the same as having operating authority.2,245,160 active, 2,268,073 inactive, 1,324 pending (all countries).
Operating authority (MC number)If you hire someone to haul for you, check that the authority is active.Private fleets and some for-hire carriers have no MC number. Authority status is a separate FMCSA record.650,643 active records have an MC docket marked active (29% of active).
Power units and driversCompare with what you see: a record of 1 truck cannot move a fleet's load volume.Self-reported, can be years old.See the size table above.
MCS-150 date (last update)Carriers must update every 24 months (49 CFR 390.201(d), as of Oct 1, 2026). An old date means stale mileage, fleet size and address.A fresh date does not mean the data are true, and a stale date does not mean a bad carrier.1,021,328 of 2,223,415 active records (46%) are dated before Oct 9, 2024.
Safety ratingA Conditional or Unsatisfactory rating is a serious flag.No rating is the normal state and does not mean good or bad.Satisfactory 40,238, Conditional 11,039, Unsatisfactory 769.
Inspections and out-of-service ratesCompare the rate with similar-size fleets, not with the whole industry.Few inspections make a rate swing on one event, and inspections are targeted, not random.Among 28,900 carriers with 5 to 15 trucks and 5 or more inspections: median vehicle OOS rate 22%, middle half 11% to 38%.

Full field list, including operation type, hazmat flag and BASIC categories, on the USDOT record explained page.

A normal out-of-service rate for a small fleet

For active carriers with 5 to 15 trucks and at least 5 vehicle inspections in 24 months (28,900 carriers), the median vehicle out-of-service rate is 21.7%, the 10th percentile is 0% and the 90th is 52%. A rate that looks alarming for the whole industry can sit inside that spread for a fleet of this size. The same rate also means different things at 6 inspections and at 60.

What to do with a record

  1. Check status, authority and the update date first. Three fields, thirty seconds.
  2. Calculate the out-of-service rate yourself from the inspection counts and compare it with fleets of similar size.
  3. Ask the carrier directly for a current certificate of insurance, and ask what changed since the last update.
  4. Keep a note of the date and what you saw. Records change.

A clean record is not proof of a good carrier, and a few violations are not proof of a bad one. For a quick check with your own numbers, use the USDOT carrier lookup and the broker and carrier red flags tool.

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