There is a number that follows your fleet everywhere — into FMCSA's files, your insurance renewal, and the carrier-vetting tools brokers run before they hand you a load. You don't set it. Until recently, you were often the last to see it.
The TC Safety Index changes the order of operations. It distills your roadside-inspection and crash history into one read across the seven safety categories regulators watch, benchmarks it against carriers like yours, and puts it in front of you first — so a problem shows up as a number you can act on, not a letter you have to answer.
An estimate — read this first
The TC Safety Index is a Trucking Comply estimate modeled on FMCSA's Safety Measurement System methodology, built from FMCSA-published roadside-inspection and crash data. It is not the official FMCSA SMS score, and Trucking Comply is not affiliated with or endorsed by FMCSA or the U.S. Department of Transportation. Treat it as an early-warning signal, not a system of record.
FMCSA's Safety Measurement System (the engine behind CSA — Compliance, Safety, Accountability) turns roadside inspections and crashes into a relative safety picture for every carrier. The TC Safety Index is a faithful estimate of that picture, modeled on the same methodology FMCSA uses to prioritize carriers for review.
Each category is scored as a percentile from 0 to 100, and the direction matters: higher is worse. A category in the 80s means most comparable carriers are performing better than you there; a category in the teens means you're ahead of the pack. The headline is simply your worst category — the one most likely to draw attention — so you always know where to look first.
The Index breaks safety into the seven categories FMCSA's methodology tracks. Each is fed by a different slice of your record, and each is scored on its own — a strong fleet on maintenance can still have a problem in hours of service.
Unsafe Driving
Part 392
Speeding, reckless driving, improper lane use, texting, seat belts — the moving violations most tied to crashes.
Hours of Service
Part 395
Log and ELD violations and driving past the 11- and 14-hour limits — the fatigue picture.
Vehicle Maintenance
Parts 393 · 396
Brakes, lights, tires, defects, and load securement written up at the roadside.
Vehicle Maintenance · Driver-Observed
Part 396
The maintenance defects a driver should have caught on the pre-trip — broken out as its own category.
Hazmat Compliance
Parts 171–180
Placards, shipping papers, leaks, and package integrity — if you haul hazardous materials.
Driver Fitness
Part 391
CDL, medical certificate, and driver-qualification gaps in the cab.
Crash Indicator
Crash history
Your reportable-crash record, weighted by how often and how severe — not just the count.
A safety score only means something next to your peers. A fleet running 2 trucks and one running 200 don't face the roadside the same number of times, so comparing their raw violation counts would be meaningless.
The Index ranks you inside a peer group of carriers with similar exposure — comparable inspection and crash volume — across a nationwide population of hundreds of thousands of carriers. Your percentile answers a fair question: among operations that see the road as often as you do, where do you land? That's the same logic FMCSA uses, and it's why a percentile tells you more than a tally ever could.
The score itself is a lagging indicator — the real value is what it lets you get ahead of. For a safety or fleet manager, the Index touches five things that cost real money:
01
Intervention risk
Each category has a line FMCSA uses to prioritize carriers for attention. Cross it and you move up the queue for warning letters, investigations, and on-site reviews. Seeing a category climb toward that line is the cue to act before the letter arrives.
02
Audit readiness
A category over the line is often what triggers a compliance review in the first place. Catch it early and you fix the root cause — coaching, maintenance, a clean DataQs challenge — on your timeline, not under audit pressure.
03
Insurance renewals
Underwriters read your safety profile alongside your loss runs. A cleaner, well-managed standing is a lever at renewal; a category quietly drifting upward is the kind of surprise that prices into your premium.
04
Freight & broker access
Shippers and brokers screen carriers on safety before they tender a load. A weak category can cost you freight without anyone telling you why — the lane just goes to someone else.
05
Litigation exposure
After a serious crash, plaintiff attorneys pull your safety history. A category that was flagged for months and left unaddressed is the “they knew and did nothing” story that turns a claim into a nuclear verdict. A managed score is a defensible one.
A good safety director doesn't chase the headline number — they read the mix behind it. The Index is built for that: it shows the percentile and what's driving each category, so you can tell a one-off bad month from a real trend.
Work the worst category first. If Vehicle Maintenance is your weak spot, the fix is a tighter pre-trip and PM discipline; if it's Unsafe Driving, it's coaching and cameras on the handful of drivers generating the events. Where a violation or crash was recorded in error, a clean DataQs challenge can remove the data point itself — and move the number. Then watch the trend: a category cooling off month over month is proof the program is working.
Categories that read “not enough data” aren't a gap to worry about — they're honesty. The Index withholds a score rather than show you a falsely clean number when there isn't enough recent activity to rank you fairly.
Use the Index the way it's meant to be used: as an early-warning and management tool that mirrors how the outside world reads your fleet — not as a substitute for the official record. It's most powerful when you check it on a cadence, act on the weakest category, and keep your underlying inspection and crash data clean.
Or skip the paperwork entirely.
We file every form in this article end-to-end — paperwork done right the first time, on a predictable per-filing or bundled price. You focus on freight. We handle the FMCSA mailroom.
Disclaimer
For informational purposes only — not legal, tax, or regulatory advice. Always verify requirements with FMCSA, your state agency, and qualified compliance professionals. Regulations and fees change; verify current requirements on official .gov sources before filing.