When a Carrier's BASIC Score Is Blank, That Isn't a Clean Bill of Health

Three inspections in thirty-six months. That's what MC-1394782 / DOT-3812047 had on record when a broker I know ran them for a Chicago-to-Nashville run. Every BASIC score on the SMS carrier page was gray — the color FMCSA uses for "insufficient data." No red alerts. No yellow flags. The broker read gray as clean and booked the load.

What the carrier's inspection history actually showed: three inspections, one vehicle out-of-service order for brake defects. That's a 33% vehicle OOS rate. The national average for the same period runs around 20-21%. This carrier was performing worse than average on the single mechanical failure category that dominates fatal crash causation — but the BASIC score was gray because FMCSA's algorithm needs more than three inspections to generate a reliable percentile rank.

Nothing happened on that load. But the broker was walking a risk they didn't see because they misread what "no data" actually means.

What Gray Actually Says

FMCSA's Safety Measurement System generates BASIC percentiles by ranking carriers against their peers — carriers operating in comparable environments, hauling similar freight, in the same time window. To make that ranking statistically meaningful, the system needs enough inspection events. Below a certain count, the system can't generate a reliable percentile and leaves the BASIC tile blank or gray, marked "insufficient data."

Here's what gray does NOT mean: the carrier is clean. It means the carrier hasn't been inspected enough times for the system to place them in the distribution. A carrier with zero violations from zero inspections is gray. A carrier with a 50% out-of-service rate from two inspections is also gray. The tile looks identical. The risk profiles are not.

Most broker tools that surface BASIC scores visually reinforce this problem. Red tiles get highlighted. Gray or blank tiles read like clean signals. They aren't. They're a data gap — and a data gap works in one direction when the underlying numbers are bad.

The Inspection Frequency Problem

A for-hire motor carrier running general freight on primary interstate corridors should accumulate inspections at a predictable rate. One truck running 80,000-100,000 miles a year through typical enforcement corridors — weigh stations, targeted inspection zones, roving patrol checks — will usually see one to three inspections per year. A 10-truck fleet running similar routes should see 10 to 30. These aren't hard targets, but they're a reasonable baseline.

Carriers with very low inspection counts relative to their claimed operating history and fleet size fall into a few categories, and which one matters for your vetting call.

Short-haul local operations. A carrier running mostly intrastate routes, avoiding the major enforcement corridors between big metros, can legitimately accumulate few inspections. The problem: if you're booking them on an interstate lane they don't normally run, their inspection record may not reflect the risk profile you're evaluating. Their trucks haven't been checked under those conditions.

Recent authority. Six months of operating history might produce 2 inspections. That's plausible and you work with what you have. The point is that "six months, two inspections, zero violations" tells you almost nothing predictive — the sample is too small to rely on. What you're actually vetting is authority age, not inspection data.

Carriers that avoid enforcement exposure. Some carriers route specifically to minimize weigh-station and patrol exposure. Low inspection count on a carrier that claims to have been running interstate freight for three or four years is a yellow flag, not a reassurance. Ask how they're routing if the count seems light for the history.

Owner-operators under a larger authority. Inspections get attributed to the DOT number that's on the truck at the time of the stop. If a carrier runs leased owner-operators whose equipment is registered separately, some of those inspections may flow to the individual operator's DOT number rather than the MC's. The result can be an artificially thin inspection record at the motor carrier level, even if the fleet collectively has plenty of inspection history.

What to Use When the BASIC Is Gray

When you're vetting a carrier with gray scores — whether they're new, small, or low-mileage on primary corridors — the BASIC percentile is not your tool. You go to the underlying data.

The SAFER company snapshot and the SMS carrier details page both surface raw inspection counts: total inspections, driver OOS orders, vehicle OOS orders. From those three numbers you can calculate OOS rates yourself, and the results are often very different from what the tile color suggests.

Driver OOS rate = driver out-of-service orders divided by total inspections. The national average runs roughly 5-6%. A carrier with 5 inspections and 2 driver OOS orders is at 40% — nearly eight times the national average. That's not a data gap you should be comfortable with.

Vehicle OOS rate = vehicle out-of-service orders divided by total inspections. National average sits around 20-21%. That 33% brake-defect rate I mentioned in the intro? Above average, even with a small sample. You'd see that immediately if you did the division.

These rates are rough when the sample is small — two inspections isn't statistically meaningful. But "8 inspections over two years, 3 vehicle OOS orders" is a 37.5% vehicle OOS rate and you can make a judgment on it regardless of the BASIC tile color.

Under 49 CFR § 396.9, authorized enforcement personnel can inspect any motor vehicle at any time, and the results — including OOS orders — are official federal safety findings. Each OOS order in a carrier's inspection history represents a specific documented determination that the vehicle or driver posed an imminent hazard serious enough to prohibit operation until corrected. That's not noise. A pattern of those findings, even from a handful of inspections, is real signal.

The other thing to pull while you're there: the actual inspection detail records. SAFER lets you view individual inspections — date, reporting state, specific violation codes, and whether each resulted in OOS orders. A carrier with the same violation code across multiple inspections (repeated brake-adjustment failures, repeated lighting violations, repeated logbook deficiencies) is showing you a maintenance or management culture problem. That pattern matters even when the total count is too low for a BASIC percentile.

Walking Through the Numbers

MC-1394782 / DOT-3812047 from the intro: 4 total inspections, 0 driver OOS, 2 vehicle OOS. Every BASIC score is gray.

Raw vehicle OOS rate: 50%. More than double the national average.

You wouldn't know that from the tiles. You'd have to open the inspection detail, count the OOS orders, divide, and compare to the national average. It takes two minutes. Most brokers don't do it because the gray tile told them there was nothing to see.

Now add the FMCSA standard. 49 CFR § 385.5 states that a motor carrier is considered fit when it complies substantially with the Federal Motor Carrier Safety Regulations and the Hazardous Materials Regulations. The SMS BASIC scores are the proxy FMCSA uses to assess that compliance continuously between formal reviews. When gray tiles prevent the proxy from working, you're not absolved of the underlying standard — you just don't have the algorithm doing the work for you. A carrier that fails 50% of its vehicle inspections is not in compliance with Part 396 maintenance requirements. The gray tile doesn't change that.

Post-Montgomery v. Caribe Transport II, "I looked at the BASIC scores and they were blank so I assumed it was fine" is not going to read as reasonable due diligence in a negligent selection case. A plaintiff's lawyer will ask whether you looked at the underlying inspection data. If the answer is no, and the raw OOS rate was 50%, that gap is hard to explain.

When Low Counts Are Fine

I'm not saying pass on every carrier with gray scores. Some of my best long-term carrier relationships are with small regional operators who have six inspections across four years because they're running short-haul routes with limited enforcement exposure. The inspection frequency makes sense given their operation, their raw OOS rates are within range, and their few inspection records don't show repeating violation patterns.

The point isn't "gray means no." The point is that gray means "go to the underlying data before you decide." If you pull the raw counts, the rates look reasonable, and the inspection detail is clean or shows only minor non-OOS violations — book the carrier, document what you found, and move on. The documentation is the proof that you looked.

If you pull the counts and the raw OOS rate is double the national average — or if two out of three inspections show the same brake violation code — that's the situation where the BASIC tile was giving you a false read and the raw data is the signal you needed.

How I Document This

For any carrier with gray BASIC scores in the categories I care most about (Unsafe Driving, Vehicle Maintenance), my file gets:

• Total inspection count from SAFER (with the date I pulled it)
• Driver OOS count and calculated rate vs. national average
• Vehicle OOS count and calculated rate vs. national average
• Any violation codes that appear more than once in the inspection detail
• My judgment: within acceptable range, or reason for additional inquiry

If I'm booking a carrier with fewer than five inspections and the raw rates are clean, I note why the low count is explainable — usually operating geography or recent authority. If the raw rates are high or the patterns are repeating, I either pass or I call the carrier, ask specifically about the violations, and document what they said and what I decided.

The gray tile is FMCSA telling you they can't rank this carrier yet. It is not FMCSA telling you the carrier is safe. Treating those as the same thing is the mistake — and it's the one that's easiest to avoid, because the underlying data is right there on the same page.

— Mason Lavallet

Founder, DOTScreener.com