
Nobody buys a CARB tracker — they buy “don’t send a truck somewhere it can’t legally operate.” Tell X3 the truck and the route and it answers instantly: Allowed, Restricted, or Not compliant — with the risk and the docs you need.
Tell X3 the truck and where it’s going and it returns a clear dispatch verdict — Allowed, Restricted, or Not compliant — with the reason and required actions. Here’s a sample:
Sample carrier · your real fleet fills the same dashboard

Dispatch asks “can Truck 12 take this load into California?” and someone Googles it, calls compliance, or dispatches anyway and eats a fine. X3 answers instantly — and flags the older trucks already restricted under California’s Truck & Bus Regulation, so you can plan replacements before one strands a load.
Which of your trucks are even allowed to operate in California, based on engine model year. Older diesels — generally pre-2010 engines — are already restricted under the Truck & Bus Regulation, so you know which to replace or retire.
California Clean Truck Check: periodic emissions testing (currently about twice a year) and the annual compliance fee (~$32 per truck in 2026). Stay ahead of every deadline and avoid a DMV registration hold.
✅ Allowed, ⚠ Restrictions, or ❌ Not compliant — with the reason, required docs, and an alternative truck if this one can’t go.
CARB, EPA, state and local rules change constantly. The regulatory agent updates daily so your dispatch answers are never stale.
See which trucks create the most access risk, which to replace first, and a Fleet Access Score for the whole fleet — an executive view of where you can and can’t run.

X3 knows the emissions and access rules that decide where a truck can legally run — federal, state, regional and municipal — and keeps them current.
A cause-and-effect intelligence system: violation intelligence flows into Fleet access rules, behavior mapping and inspection-risk, then into prevention, corrective action, forecasting and an executive brief. Grounded in the X3 DOT Skills corpus and verified SMS methodology.

We pull your live FMCSA record through CarrierOK — every BASIC percentile, inspection, violation, crash and insurance filing. No spreadsheets, no manual entry.
Every morning we re-pull and diff your record, so you know exactly what changed overnight — before FMCSA or your insurer does.
Prioritized fixes ranked by business impact, the exact inspections worth a DataQ challenge, coaching plans, and an insurer-ready packet.
Every plan includes the complete Clean Truck toolkit — the only difference is how many trucks you run.
Prices are for the X3 Clean Truck compliance service and do not include CARB’s Clean Truck Check compliance fee or any required emissions testing, which are paid separately to the state / testing provider.
No. It’s a fleet-access platform. Nobody wants a CARB tracker — they want a dispatch answer: can this truck legally run this route, and if not, which truck can. X3 gives you the verdict and the plan.
CARB Clean Truck Check (periodic emissions testing plus the annual compliance fee), California’s Truck & Bus Regulation (which older diesels can legally operate), plus EPA and state, regional and municipal access rules and low-emission zones — updated daily. Verify your truck’s specific engine and exemption status with each agency.
Yes — one login across the X3 empire. Clean Truck feeds Permits (weight-mile), HazMat (route restrictions), Audit (vehicle docs) and Insurability (vehicle age + compliance).
Daily. CARB Clean Truck Check, California’s Truck & Bus Regulation, EPA and the state and municipal low-emission zones all change on their own schedules — X3 tracks them so a truck that was legal last week isn’t quietly out of compliance today.
Add your trucks (VIN, engine year, weight class and home base) and X3 maps each one to the rules that apply. No hardware and no new telematics — you can be running dispatch verdicts the same day.
X3 Clean Truck is decision support grounded in the applicable CARB and EPA rules and cites the source — it is not legal advice, and it is not affiliated with CARB, the EPA or any agency. Verify final determinations with each agency; the carrier remains responsible.
Tell X3 the truck and the route and get a clear Allowed / Restricted / Not compliant verdict — before you dispatch.
X3 Clean Truck is one of 18+ FMCSA compliance tools built into X3 Compass — your all-in-one virtual safety director. One login runs your entire safety department from a single dashboard, with one shared driver & vehicle record across every tool.
DataQ, CSA, DQ files, drug & alcohol, hazmat, permits and more — no juggling separate logins or vendors.
Every tool reads the same fleet data, so a driver or truck is entered once and shared everywhere.
See your whole fleet's compliance, scores and risk in a single command center — not ten dashboards.
One subscription for the platform. Pass-through items — MVR & background pulls, state & permit fees, and optional continuous monitoring — are billed at cost on top.