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You’re running a business, not a compliance department. But if your trucks are model year 2013 or newer and weigh over 14,000 pounds GVWR, California’s Clean Truck Check requirements aren’t optional anymore.
Miss a deadline and you’re looking at DMV registration holds that ground your trucks. Ignore a Notice to Submit to Testing and you’re facing fines up to $10,000 per vehicle, per day. That’s not a scare tactic—that’s the regulation as of January 2025.
We handle CARB emissions testing for heavy-duty vehicles so you can focus on what actually makes you money. Our credentialed testers use CARB-approved equipment and submit results directly to the state database. You get documentation, compliance, and the ability to keep operating without interruption.
This isn’t about passing inspection for older trucks or light-duty vehicles. If your fleet includes 2013 or newer semi trucks, buses, or commercial vehicles over 14,000 pounds operating in California, this applies to you.
We serve Glendale and the surrounding areas with CARB diesel compliance testing for heavy-duty fleets. We’re not a general smog shop trying to figure out HD I/M requirements—we’re credentialed specifically for Clean Truck Check testing under California’s Heavy-Duty Vehicle Inspection and Maintenance program.
That means our testers passed CARB’s official training course and exam. We use certified OBD testing devices that meet SAE J1667 standards, and we report results directly through the CTC-VIS system so CARB and the DMV get updated in real time.
Glendale sits in the heart of Southern California’s logistics corridor, where port access, railyard entry, and highway operation all hinge on compliance. We understand the pressure fleet managers and owner-operators face here—tight deadlines, expensive equipment, and regulations that don’t care if you’re ready or not. We’re here to make the testing part straightforward.
First, we confirm your vehicle qualifies—model year 2013 or newer, GVWR over 14,000 pounds, and operating on California roads. If you received a Notice to Submit to Testing from CARB, you’ve got 30 calendar days to get a passing test submitted. If you’re being proactive, you can submit a passing test up to 90 days before your compliance deadline.
We bring the testing equipment to you. Our credentialed tester connects CARB-approved OBD diagnostic tools to your truck and runs the inspection according to state protocols. For non-OBD vehicles, we follow the appropriate HD I/M procedures. The test checks emissions system performance and ensures your truck meets California’s air quality standards.
If your truck passes, we submit the results directly to CARB’s database that same day. You get documentation proving compliance, and the DMV gets notified so there’s no registration hold. If something comes back flagged, we’ll walk you through what needs attention and give you time to make repairs before retesting.
Starting in 2025, most trucks need testing twice a year. By 2027, it goes to quarterly. We’re set up to handle repeat testing for fleets, so you’re not scrambling every cycle.
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You get a full CARB-compliant emissions inspection using certified diagnostic equipment. That includes OBD system evaluation for 2013 and newer diesel engines, fault code analysis, and emissions control system verification. We check that your truck’s onboard diagnostics are functioning and that no tampering or defeat devices are present.
Once testing is complete, you receive official documentation showing your vehicle’s compliance status. If the truck passes, we submit results to the CTC-VIS system immediately so CARB and the DMV have it on file. That submission is what prevents registration holds and satisfies your legal obligation under California’s Heavy-Duty Inspection and Maintenance Regulation.
For Glendale-based fleets, this also means maintaining access to the Ports of Los Angeles and Long Beach, which enforce CARB truck regulations strictly. Trucks that aren’t compliant get turned away at the gate—no exceptions. Same goes for railyards and certain freight facilities throughout Southern California.
We also provide guidance on compliance deadlines, testing frequency, and what to do if you’re flagged for follow-up. The regulations are confusing, especially with the shift from semi-annual to quarterly testing coming in 2027. We keep it simple and make sure you know what’s required and when.
Only trucks that are model year 2013 or newer and have a gross vehicle weight rating over 14,000 pounds. That includes semi trucks, heavy-duty pickups, buses, delivery trucks, and other commercial vehicles that operate on California public roads or highways.
If your truck is older than 2013 or weighs less than 14,000 pounds GVWR, this regulation doesn’t apply. The requirement also covers vehicles registered out of state but operating in California, as well as government and privately owned heavy-duty vehicles.
Hybrid trucks over 14,000 pounds also fall under this rule if they’re 2013 or newer. The key factors are model year, weight rating, and whether the vehicle operates in California—not where it’s registered or what kind of cargo it hauls.
If you miss your compliance deadline, the DMV will place a registration hold on your vehicle. That means you can’t renew registration, and technically, you can’t legally operate the truck on California roads until you submit a passing test and the hold is lifted.
If you receive a Notice to Submit to Testing and don’t respond within 30 calendar days, CARB can issue penalties up to $10,000 per vehicle, per day. They can also deny your trucks access to California ports, railyards, and certain freight facilities.
The enforcement is real and it started in January 2025. CARB isn’t issuing warnings—they’re expecting compliance. The good news is you can submit a passing test up to 90 days before your deadline, which gives you a buffer if repairs are needed. Don’t wait until the last minute.
Right now, testing is required twice a year—semi-annually. Your specific deadlines depend on when your vehicle was first subject to the regulation, but most trucks with compliance dates starting January 1, 2025 or later need testing every six months.
In October 2027, the frequency increases to quarterly. That means four times a year. CARB sets your deadlines based on your vehicle’s VIN and compliance schedule, and they’ll send notices when testing is due.
You can stay ahead by scheduling tests up to 90 days early. If you pass, that result satisfies your upcoming deadline and buys you time to handle any repairs before the next cycle. For fleets, it makes sense to stagger testing so you’re not trying to get every truck done in the same week.
No. Testing has to be performed by a CARB credentialed tester who’s completed the official training course and passed the exam. Not every smog shop or inspection station is credentialed for Clean Truck Check—it’s a specialized program under California’s HD I/M regulation.
You also need to make sure the tester uses CARB-certified OBD diagnostic equipment that meets SAE J1667 standards. Results have to be submitted through the CTC-VIS system, which is the official database CARB and the DMV use to track compliance.
We’re credentialed and equipped to handle Clean Truck Check testing in Glendale and surrounding areas. We bring the equipment to you, run the test, and submit results the same day. You don’t need to hunt down a facility or wonder if they’re doing it right.
If your truck doesn’t pass, you’ll get a report showing what triggered the failure—usually fault codes, emissions system issues, or OBD malfunctions. You’ll need to get those problems repaired before retesting.
The good news is you have time. If you test early—up to 90 days before your deadline—you can handle repairs and retest without risking a registration hold or penalty. If you’re up against a deadline, you need to move fast, but most issues are fixable if you’re working with a qualified diesel mechanic.
Once repairs are done, we retest the vehicle using the same CARB-compliant process. If it passes, we submit the results immediately and you’re back in compliance. We don’t pass trucks that shouldn’t pass, but we also don’t fail trucks for minor issues that don’t affect emissions performance.
Yes, if your truck operates on California public roads or highways. The regulation applies to any heavy-duty vehicle over 14,000 pounds GVWR, model year 2013 or newer, regardless of where it’s registered.
That includes out-of-state trucking companies, owner-operators based elsewhere, and fleets that run routes through California. If you’re driving into the state—even temporarily—you’re subject to Clean Truck Check requirements.
CARB tracks compliance through VIN, not registration. If your truck gets flagged and you can’t show proof of a passing test, you can be denied entry to ports, hit with fines, or prohibited from operating until you comply. It’s easier to get tested proactively than to deal with enforcement after the fact.
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