OOS Order vs. OOS Rate: Two Completely Different Things, and Mixing Them Up Will Get You Burned

A broker called me a few months back, worked up. She'd found a carrier she almost tendered a $94K flatbed load to — steel coils, Chicago to Houston — and she wanted to tell me she'd caught a problem. "The carrier was OOS," she said. "I checked."

I asked which kind.

She went quiet for a second. "What do you mean, which kind?"

That's the problem. There are two things in the FMCSA universe that get called "OOS," they live in different parts of the SAFER database, they mean completely different things, and most brokers I talk to treat them as the same animal. One is a statistical risk signal you weigh like any other data point. The other is a regulatory prohibition — a legal stop-notice that says this carrier cannot move freight right now. Tendering to a carrier under an active OOS order isn't aggressive vetting. It's an argument you will lose in front of a jury.

What an OOS Order Actually Is

An Out-of-Service Order, in the enforcement sense, is FMCSA telling a carrier to stop operating. Full stop. Under 49 CFR § 386.72, FMCSA can issue an imminent hazard OOS order when continued operations pose a substantial likelihood of serious injury or death before a proceeding can be completed. The authority flows from 49 U.S.C. § 31144 — FMCSA's safety fitness determination power.

When an OOS order lands, the carrier is done until FMCSA lifts it. They cannot dispatch drivers. They cannot accept loads. If they do, they're violating a federal order. You can also see OOS orders tied to specific types of operations: a carrier might be ordered OOS for hazmat but still operate dry van. Read what the order actually covers.

On SAFER, active OOS orders show up under Enforcement Actions. You'll see the order date, the type (imminent hazard, out-of-service, safety fitness), and whether it's been lifted. If there's an active order on the date you tendered, no CSA score improvement, no clean prior record, and no favorable insurer history fixes that. The carrier was legally prohibited from operating. You chose them anyway.

After Montgomery v. Caribe Transport II, LLC — the May 2026 Supreme Court decision that blew up FAAAA preemption for broker negligence claims — this distinction matters even more. A plaintiff's attorney seeing an active OOS order in your carrier file doesn't need to work very hard. The jury instruction practically writes itself.

What an OOS Rate Is

The Out-of-Service Rate is a different thing entirely. It's a percentage: of all the roadside inspections a carrier received over a given period, what fraction resulted in an inspector placing the driver, the vehicle, or both out of service on the spot.

Inspectors use the Commercial Vehicle Safety Alliance (CVSA) OOS criteria to make that call. A brake line with a severe enough defect, a driver who's over hours, a cracked wheel — if the violation meets the threshold, the driver or truck gets parked until it's corrected. FMCSA aggregates those inspection results and publishes separate rates for vehicles and drivers.

The national vehicle OOS rate typically runs around 20–22%. The national driver OOS rate runs around 5–6%. Those are your baselines. A carrier sitting at 12% vehicle OOS is below average. A carrier at 38% vehicle OOS has a maintenance problem worth asking about.

The OOS rate feeds into the CSA Safety Measurement System. The Vehicle Maintenance BASIC in the SMS draws heavily on vehicle OOS inspection violations under 49 CFR Parts 393 and 396. The HOS Compliance BASIC feeds from driver OOS violations under Part 395. These BASIC percentiles are how FMCSA ranks carriers against their peers — they're risk indicators, not enforcement actions.

The Critical Difference

Say it plainly: an OOS rate is a statistic. An OOS order is a legal prohibition.

A carrier with a 40% vehicle OOS rate still has active authority. They're still legally allowed to haul freight. Their maintenance program is probably a mess, and I'd want more digging before I put a load on them — but they're not under any order telling them to stop. An experienced carrier with a high OOS rate on a small inspection sample might just be unlucky with which scale houses they've been through.

A carrier under an active OOS order has zero business moving your freight. It doesn't matter what their BASIC percentiles look like. It doesn't matter if they quoted you a great rate or you've used them twenty times before. The order says stop, and if you tender to them anyway, you're the one who looks like you weren't paying attention.

The Inspection Count Problem

Here's a thing that bites brokers constantly with OOS rates: the denominator.

MC-1247893 has a 50% vehicle OOS rate. Sounds alarming. Turns out they've had 2 inspections in 24 months. One of them flagged a tire. Half your records could be bad luck.

DOT-3567102 has a 22% vehicle OOS rate. Closer to national average. But they have 180 inspections over 24 months, meaning their trucks are on the road constantly — and their 22% represents 40 vehicles actually placed OOS. That's a pattern, not noise.

Always look at the inspection count sitting behind the percentage. The SAFER company snapshot gives you the raw numbers: inspections, OOS inspections, OOS rate. If a carrier has fewer than 10 vehicle inspections over 24 months, I put almost no weight on their vehicle OOS rate as a standalone number. I start caring a lot more once the sample gets above 25 inspections.

The SMS BASIC percentiles do a version of this adjustment — they account for inspection exposure and carrier size when computing percentiles. That's part of why BASIC percentiles are more useful than raw OOS rates for comparing carriers of different sizes.

What I Actually Check, and In What Order

On a SAFER pull, here's how I sequence it:

First, Enforcement Actions tab — is there an active OOS order? If yes, I stop. I'm not tendering. I'll document what I found and move on to the next carrier.

Second, the Safety Rating field. "Satisfactory" is fine. "Conditional" requires more digging. "Unsatisfactory" is effectively a hard no. "Not Rated" just means FMCSA hasn't done a full review, which is common for smaller carriers.

Third, the inspection summary. I look at vehicle OOS rate vs. the national average, then driver OOS rate vs. the national average, then I look at the raw inspection count to decide how much weight to put on those percentages.

Fourth, BASIC percentiles in the SMS. The Vehicle Maintenance BASIC tells me if their inspection violations are trending toward a FMCSA intervention threshold. For general freight I'm watching for anything above 75th percentile — not because 75% is a hard rule, but because it's where FMCSA starts paying more attention and where plaintiff attorneys start pointing during depositions.

A vehicle OOS rate above 35% with a reasonable inspection sample (25+ inspections) is a flag I document in the file and often causes me to ask for a call with the carrier's safety director. A driver OOS rate above 15% is similar — I want to know if they have a chronic HOS problem or a licensing management issue. 49 CFR § 391.11 sets out driver qualification requirements; a carrier running drivers who repeatedly fail roadside qualification checks has a Part 391 issue, and that's going to come up if there's an accident.

Neither number alone disqualifies a carrier in the way an active OOS order does. They're inputs. The OOS order is a veto.

Reading the SAFER Snapshot Without Missing It

The OOS order section isn't front-and-center on SAFER — you have to click into it. The main snapshot page shows you authority status, safety rating, insurance filings, and the inspection summary. The enforcement actions, including active OOS orders, are in a separate tab most brokers never click because the top of the page looks clean.

This is not a hypothetical failure mode. Brokers have tendered freight to carriers under active OOS orders because they looked at the SAFER front page, saw active authority, saw a Satisfactory or Not Rated status, and stopped. The enforcement tab is a separate click. It has to be part of every pull.

The Carrier411 and DAT platforms pull FMCSA data, but always verify directly on SAFER for enforcement actions — the lag between FMCSA's database and third-party platforms can run 24–72 hours, and an OOS order can drop fast. For a $94K steel coil load, 72 hours of sync delay is enough to matter.

How I Document This

When I pull a carrier for a load, my file note includes:

• Date and time of SAFER pull
• Authority status (active/inactive)
• Safety rating
• Whether I checked Enforcement Actions: active OOS orders, none found (or: order found, carrier rejected)
• Vehicle OOS rate, inspection count, and national average for comparison
• Driver OOS rate, inspection count
• Relevant BASIC percentiles and whether any are above 75th percentile
• Any follow-up actions (called safety director, requested maintenance records, etc.)

That last line is the one that matters in litigation. "We pulled SAFER and nothing flagged" is a box-checking answer. "We pulled SAFER, found a 34% vehicle OOS rate on 62 inspections, called the safety director to understand their brake inspection protocol under 49 CFR § 396.3, and documented the response before tendering" is a defense.

The distinction between OOS order and OOS rate matters because they require different responses. The order requires you to walk away. The rate requires you to think. Know which one you're looking at before you decide what to do with it.

— Mason Lavallet

Founder, DOTScreener.com