Before you book a load with an unfamiliar carrier — or take a job driving for one — it's worth spending five minutes checking its FMCSA safety record. The tricky part isn't finding the data; FMCSA publishes almost all of it publicly. The tricky part is knowing what the numbers actually mean, since a carrier can look clean on one measure and concerning on another.
Every carrier's public record includes a USDOT number and, if FMCSA has ever conducted a full audit, a Safety Rating: Satisfactory, Conditional, or Unsatisfactory. Most carriers — especially smaller ones — have no rating at all, simply because they've never been selected for an on-site Compliance Review. That's normal, not a red flag by itself.
What does matter: an Unsatisfactory rating means FMCSA found substantial non-compliance with federal safety regulations, and can come with an out-of-service order. A Conditional rating means the carrier fell short of one or more specific requirements. Either one is worth a direct conversation with the carrier about what happened and what's changed since.
The BASICs breakdown — Unsafe Driving, Hours-of-Service Compliance, Driver Fitness, Controlled Substances/Alcohol, Vehicle Maintenance, and two others — updates monthly from real roadside inspection data, which makes it more current than a Safety Rating that might be years old. A lower percentile is better: it means the carrier has fewer violations than similar carriers, not fewer violations in absolute terms.
Don't fixate on one category in isolation. A carrier at the 90th percentile in Vehicle Maintenance but clean everywhere else tells a different story than one elevated across the board. The former might mean an aging fleet that still drives safely; the latter suggests a broader operational problem.
The Out-of-Service Rate is one of the more concrete numbers available, because it comes directly from roadside inspections where an inspector physically found a violation serious enough to pull a truck or driver off the road. FMCSA and CVSA publish national averages each year — carriers meaningfully above the average on both the driver and vehicle side warrant closer attention; carriers below it are performing better than their peers on real, verified stops, not self-reported data.
You'll hear brokers and shippers ask about a carrier's "CSA score" constantly, but there's no single number by that name. What they usually mean is the BASICs percentile breakdown, or sometimes just a general impression of it. Knowing this saves you from chasing a figure that isn't there, and helps you ask a more useful question: which specific BASIC, if any, is elevated.
Every carrier files an MCS-150 with FMCSA every two years, reporting fleet size, driver count, and operational details — and this filing is self-reported, not audited. A carrier whose last filing was three or four years ago may have a materially different fleet today than what's on record, even if nothing about its safety data has changed in that time. The filing date is a quick way to gauge how current the rest of the profile likely is.
No single figure tells the whole story. A reasonable process: check the formal Safety Rating first (rare, but a hard signal when present), scan the BASICs for anything elevated, compare the OOS rate to the national average, and note how recently the MCS-150 was filed. If you also want to see actual crash and inspection events rather than just percentiles, our guide on reading a carrier's crash and inspection history walks through that. You can check all of this directly for any company in our carrier directory.