How to check if a trucking company is safe (free DOT number lookup)

Last reviewed: August 29, 2026

To check if a trucking company is safe, look it up by its USDOT or MC number against FMCSA records and read four things: its BASIC safety scores, its operating authority, its active insurance, and its crash history. The fastest free way is FMCSA SAFER, or one call to the LiveDataLink fmcsa_carrier_lookup tool.

Look the carrier up by DOT or MC number

Most interstate carriers subject to FMCSA registration have a unique USDOT number, and many for-hire carriers also have an MC (motor carrier) number. Enter either one into FMCSA SAFER, or call fmcsa_carrier_lookup with the number. You get the legal and DBA name, address, fleet size, driver count, operating status, and cargo carried.

{
  "method": "tools/call",
  "params": {
    "name": "fmcsa_carrier_lookup",
    "arguments": { "dot_number": "80321" }
  }
}

What the safety record means

BASIC scores. FMCSA tracks seven Behavior Analysis and Safety Improvement Categories (unsafe driving, crash indicator, hours-of-service, vehicle maintenance, controlled substances, hazmat, and driver fitness). Each is a percentile, so a higher number is worse. The fmcsa_safety_scores tool returns these by DOT number.

Operating authority and insurance. A carrier moving freight for hire across state lines needs active authority and on-file insurance. The fmcsa_carrier_authority tool tells you whether authority is active and whether insurance is current. A carrier with revoked authority or lapsed insurance should not be hauling.

Crash history. Reported crashes, including those with injuries or fatalities, factor into the crash indicator percentile.

Red flags

Chameleon carriers. A carrier that shut down under one DOT number and reopened under a new one to shed a bad record. Watch for a brand-new number tied to an old address, officer, or phone.
High crash indicator percentile. Treat an elevated percentile as a reason to review the underlying record and verify the carrier before booking.
Inactive or lapsed insurance. If fmcsa_carrier_authority shows insurance is not on file, do not book.
High out-of-service rates. Compare the carrier's vehicle and driver rates with the context shown in its current FMCSA record, and investigate unusually high values before booking.

Free ways to check

FMCSA SAFER (safer.fmcsa.dot.gov) is free and authoritative. For programmatic checks, or to compare several carriers at once, the LiveDataLink tools wrap the same FMCSA data: fmcsa_carrier_lookup, fmcsa_carrier_search (by name), fmcsa_safety_scores, fmcsa_carrier_authority, and fmcsa_carrier_compare.

FAQ

What is the difference between a DOT number and an MC number?

The USDOT number is a unique registration ID for a carrier subject to federal safety rules. An MC number identifies operating authority for many for-hire interstate carriers. Requirements vary by operation, so confirm the applicable authority in the current FMCSA record.

Can I search by company name instead of a number?

Yes. Use fmcsa_carrier_search with the company name to pull up to 50 matches, then confirm the right one by address and DOT number.

How current is the data?

It reflects FMCSA's published carrier census and safety data. Always confirm authority and insurance against the live FMCSA record before relying on it for a booking decision.

Try this workflow

Use the free tier to test the tools with your own inputs, or request a focused pilot if you are evaluating this for a team.

Get a free API key · Browse the tools · Choose a pilot

Last reviewed: August 29, 2026 · LiveDataLink home