Description
Clean Truck Check
For California diesel fleets that can’t afford a truck sidelined by a missed CARB deadline, we manage every Clean Truck Check obligation on your behalf year-round, across every VIN. Unlike one-time filing services that hand you a certificate and move on, we own your compliance calendar and act before deadlines become problems.
- CTC-VIS registration
- Annual compliance fee payment
- Filing coordination
Need to Know
The penalty is a registration hold
- Miss a deadline and the truck gets a DMV registration hold -- it legally cannot operate in California until compliance is restored. Getting caught isn't a matter of chance: non-compliant trucks can be denied entry at ports and railyards.
Who is required to file for the Clean Truck Check?
- Nearly all diesel, alternative-fuel, and hybrid vehicles over 14,000 lbs CVWR operating on California public roads including: commercial trucks and buses, out-of-state vehicles if they operate in California, and single-vehicle fleets.
The fines are serious
- Under California Health and Safety Code Section 42402, CARB can pursue civil penalties of $1,000 to $10,000 per day, per vehicle for non-compliance. A single truck out of compliance for a week can generate $70,000 in exposure. CARB confirmed in January 2026 that Clean Truck Check enforcement remains fully in effect for all trucks operating in California, regardless of where they are registered.
Why DOT Compliance Group?
- We serve carriers across the DOT compliance landscape
- We know the system and watch it for every truck you own.
- We are proactive, not reactive
- We grow with you
- We help you get your time back to running your business
Frequently Asked Questions
Does my truck have to comply with California’s Clean Truck Check?
The rule applies to nearly every diesel and alternative-fuel heavy-duty vehicle that drives on California roads — including out-of-state trucks just passing through. Owner-operators with a single truck are covered too. If you’re not sure where your fleet stands, our free compliance check will tell you exactly which of your trucks are subject to the rule.
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Do out-of-state trucks have to comply with California’s Clean Truck Check?
Yes. If your trucks drive in California, the rule applies regardless of where they’re registered. CARB confirmed in January 2026 that Clean Truck Check enforcement remains fully in effect for all trucks operating in the state, even after the EPA’s partial SIP disapproval. Many out-of-state carriers don’t realize they’re subject to it until a truck gets flagged — which is exactly the gap we close.
How often do I have to test, and when is each truck due?
Most trucks test twice a year right now, and OBD-equipped vehicles move to four times a year starting October 2027. Deadlines are staggered — each truck’s due date is tied to its DMV registration or VIN, so a fleet ends up juggling dozens of different dates. We monitor each truck’s calendar and act ahead of every deadline, year-round.
Where is the physical emissions test done?
The physical emissions test must be completed at a CARB-credentialed testing station, which the carrier arranges. We monitor your truck compliance and notify you when a test needs to be scheduled, so it never slips.
