Your Vehicle Out-of-Service Rate, and What It Is Telling You

The direct answer: your vehicle out-of-service (OOS) rate is the share of roadside inspections in which one of your trucks was found with a violation serious enough that it could not legally move until the defect was fixed. It is public, it is free to look up, and as of 06/26/2026 the national average is 22.26%. If your number is above that, enforcement data is saying your equipment is failing inspections more often than the average fleet on the road — and unlike most metrics in this business, everyone can see it, including your customers and your insurer.

Where to find your number, free, in about five minutes

FMCSA publishes it on the SAFER Company Snapshot. Go to safer.fmcsa.dot.gov, search by USDOT number, and read the Inspections table. You will see four columns — Vehicle, Driver, Hazmat, IEP — with your inspection count, your OOS count, your OOS percentage, and the national average printed directly underneath for comparison. Nothing is redacted and no login is required. Anyone can pull yours, and you can pull anyone else’s.

Two details on that table matter. The rates are calculated on the most recent 24 months of inspections, so a bad stretch keeps counting against you for two years after you fix the underlying problem. And the number is a ratio, not a count: a fleet with eight inspections and two OOS events shows 25%, which reads alarming but is really a very small sample. Read the inspection count before you read the percentage.

The national averages, as published

As of 06/26/2026, FMCSA lists the national averages as 22.26% for vehicles, 6.67% for drivers, and 4.44% for hazmat. These are refreshed periodically, so check the as-of date printed on the snapshot rather than quoting a number you remember.

Vehicle rate and driver rate are different problems

They sit side by side in the same table and get confused constantly, but they point at opposite departments. The vehicle rate is about equipment condition — brakes, lamps, tires, steering, suspension, coupling, load securement. The driver rate is about the person and the paperwork — licensing, medical certification, hours of service.

The diagnostic is in the split. A fleet showing a high vehicle rate and a near-zero driver rate has disciplined drivers and a maintenance problem; more training will not help it. The reverse pattern — clean trucks, drivers going out of service — is a compliance and scheduling problem, and no amount of shop work will move it. Look at both numbers before deciding what to spend money on.

What actually moves the number

Inspect against the same criteria the roadside uses

Out-of-service decisions are not made at an officer’s discretion. They follow the North American Standard Out-of-Service Criteria published by the Commercial Vehicle Safety Alliance, which is revised annually. A fleet that only ever inspects to its own internal checklist is measuring itself against a different standard than the one it will be judged by. The cheapest version of this is to have the annual DOT inspection done by someone who works to those criteria year-round, and to treat what they flag as real.

Take pre-trip inspections seriously enough to make them findable

Most vehicle OOS violations are conditions a driver could have seen — a lamp out, an air leak, a tire below limits, a loose component. A pre-trip that is performed honestly, with a defect report that actually reaches whoever schedules repairs, catches a meaningful share of them before a scale house does. A pre-trip that is signed in the yard without a walk-around catches none.

Kill repeat defects instead of re-repairing them

The same system failing on the same unit twice in a quarter is not bad luck; it is an unfinished repair or a root cause nobody chased. Repeat repairs are also the cheapest thing on this list to fix, because you are already paying for the labor twice.

Challenge records that are genuinely wrong

If an inspection is recorded against you in error — wrong carrier, wrong vehicle, a violation that was not yours — FMCSA runs a formal correction process called DataQs, linked from your own snapshot page. It is the only legitimate way to change what is published, and it works only for demonstrable errors. There is no service, anywhere, that can remove accurate violations from your record.

Why this number is worth watching even when it looks fine

Roadside inspection data feeds FMCSA’s Safety Measurement System, including the Vehicle Maintenance category. Percentile standing there influences how likely your trucks are to be pulled in for inspection in the first place — which is the compounding part. A fleet with a maintenance problem gets inspected more, which surfaces more violations, which raises its standing further. The way out is upstream: fix the equipment condition, and inspection exposure falls with it.

Common questions

What is a good vehicle out-of-service rate?

Below the national average of 22.26% (as of 06/26/2026) is the first meaningful threshold, because that is the comparison FMCSA itself prints on your snapshot. Well-run fleets in our area run single digits. Judge yourself against the published average and against your own trend over the last two years, not against a number a vendor quotes you.

How long does a bad inspection stay on my record?

OOS rates are calculated on the most recent 24 months of inspections, so an event ages out of the calculation two years after it happens. It does not get removed early because the truck was repaired.

Can I look up another company’s out-of-service rate?

Yes. The SAFER Company Snapshot is public for every carrier with a USDOT number. Fleets use it to screen carriers they hire; it is equally available to anyone screening you.

Does a high rate mean I will be audited?

Not automatically. It raises your standing in the Vehicle Maintenance category of FMCSA’s Safety Measurement System, which is one of the inputs to enforcement prioritization — meaning more inspection exposure rather than an automatic investigation.

Where we fit

We perform DOT inspections in our Sacramento shop, and we do preventive maintenance on the systems that put trucks out of service — brakes, steering and suspension, lighting and electrical, tires and wheel ends. If your snapshot is showing a vehicle rate above the national average, the useful first conversation is not a sales call: bring us the last two years of inspection reports and we will tell you whether you are looking at a maintenance interval problem, a pre-trip problem, or a small handful of units dragging the whole fleet’s number down.