How to Read a Carrier's Safety Record

How to Read a Carrier’s Safety Record Before You Hire Them

Every interstate carrier’s inspection and violation history is public, free, and almost nobody looks at it. It takes about ten minutes and it tells you more about whether a delivery estimate will hold than any review or any quote.

Here is what the federal data actually contains, which numbers matter, and how to interpret them without over reading.

Drivers and staff standing beside a tractor unit

Start With the Operating Authority

Before any safety data, confirm the company exists as it claims to. Every carrier and broker operating across state lines holds a USDOT number, an MC number, or both, registered with the federal motor carrier regulator.

Ask for the number and look it up yourself rather than trusting one printed on a website. Four checks: the authority is active rather than revoked or pending, the legal name and address match what you were told, there is an operating history rather than a registration created last month, and the record shows insurance on file.

A borrowed number is a known tactic, which is why matching the name and address matters as much as the number existing.

The Number That Matters Most

For predicting whether your shipment goes smoothly, the single most useful figure is the out of service rate.

When a truck is inspected at the roadside, an inspector can place the vehicle or the driver out of service on the spot for a serious defect. The carrier’s record shows what share of its inspections ended that way, alongside the national average.

That matters to you directly rather than abstractly. A truck placed out of service mid trip means your vehicle sits on a shoulder or in a yard until a replacement arrives. A carrier well above the national average is telling you something about how often that happens.

The Categories, and What Each Suggests

Violations are grouped into behavioral categories, and which one a carrier scores badly in is more informative than the overall picture.

Two tractor units on a highway

Vehicle maintenance covers brakes, lights, tires and defects found at inspection. High scores here suggest deferred maintenance, which correlates with breakdowns and delays.

Hours of service compliance covers driver logs. Problems here suggest schedule pressure, which is worth knowing about on any load.

Unsafe driving covers speeding, reckless driving and similar citations.

Driver fitness covers licensing and medical certification paperwork.

Controlled substances is self explanatory and the most serious.

Crash history is recorded separately, and it deserves a caveat: the data has historically included crashes regardless of who was at fault, so a raw crash count is a weaker signal than the violation categories.

How to Interpret It Fairly

Three cautions, because it is easy to misread this data in both directions.

Inspection volume matters. A carrier with three inspections and one violation looks catastrophic as a percentage and may be unremarkable. Look at how many inspections the record is based on before drawing conclusions.

Small carriers are volatile. Most carriers in this industry are small, and a single bad inspection moves a small operator’s percentages far more than a large fleet’s. That is arithmetic rather than evidence.

Recency matters. A pattern from four years ago under different management is different from one from last quarter. Look at when the violations occurred.

What you are looking for is a pattern: repeated maintenance violations across many inspections, or an out of service rate well above average sustained over time. One old violation is noise.

Brokers Do Not Have Safety Records

An important distinction that confuses people.

A broker arranges transport and does not operate trucks, so it has operating authority and insurance on file but no inspection data, because it has no vehicles to inspect. That is not a red flag; it is what a broker is.

Out of service warning tape

What matters with a broker is different: that its authority is active, that it holds the required surety bond, and above all that it will tell you which carrier is assigned to your vehicle. That last point is what makes the safety check possible at all. A broker who will not name the carrier is asking you to skip it.

Most vehicle transport in the country is arranged this way, and a broker with a vetted network is generally better for a customer than a single carrier, because no one fleet covers every lane.

What to Do With What You Find

Use it as a tiebreaker rather than a veto. Quotes within a couple of hundred dollars of each other, and one carrier has a markedly better maintenance and out of service record: that is your answer.

Use it as a veto in two situations: revoked or inactive authority, and no insurance on file. Both are disqualifying regardless of price.

And pair it with the insurance certificate, which the safety record does not show in useful detail. Ask for the certificate, check the cargo limit against your vehicle’s value, and remember the limit applies to the whole load rather than to your car. The heavy haul version of this check is set out in our page on vetting a heavy haul transport company.

Common Questions

Where do I look up a carrier? The federal motor carrier regulator’s public database, using the USDOT or MC number the company gives you.

Which number matters most? The out of service rate, because a truck pulled out of service mid trip leaves your vehicle waiting.

Why does a small carrier look worse? Fewer inspections make each violation a larger percentage. Check the inspection count before concluding anything.

Why does my broker have no safety data? Brokers do not operate trucks, so there is nothing to inspect. Check authority, bond, and insist on knowing which carrier is assigned.

Is a crash on the record disqualifying? Not on its own. Crash data has historically been recorded regardless of fault, so violation categories are the stronger signal.