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Compton sits about 10 miles from both the Port of Los Angeles and the Port of Long Beach, with I-710 and I-110 running right through the city. If you’re doing port turns, running drayage, or managing a warehouse fleet along the Alameda Street corridor, your trucks are exactly what the Clean Truck Check program was built for and exactly what CARB is watching.
A non-compliant truck doesn’t just mean a fine. It means a DMV registration hold, a truck that can’t legally roll, and a load that doesn’t get picked up. For port-adjacent carriers in Compton, freight brokers and terminal operators are required to only dispatch compliant vehicles so the consequences hit your contracts before they even hit your wallet.
Compton is also designated as a priority enforcement community under California’s AB 617 program, which means CARB and the South Coast AQMD are more active here than in most other parts of the state. Getting ahead of your compliance window instead of reacting to a notice is the difference between a routine test and a 30-day scramble to save your registration.
We do one thing: OBD-based Clean Truck Check testing for diesel and alternative fuel trucks that are model year 2013 or newer with a GVWR over 14,000 pounds. That’s the entire scope of what we do. No passenger cars, no opacity tests for older vehicles, no split focus. Just the specific test your truck needs to stay CARB compliant in California.
We’re credentialed by CARB and listed on their public tester registry you can verify that at arb.ca.gov before you book anything. We use only CARB-certified OBD equipment, and we submit your results directly and electronically to the CTC-VIS database. You don’t log into a portal. You don’t upload anything. We handle the submission, and your DMV record updates within 3 to 5 business days.
We serve Los Angeles County, which puts Compton and the industrial yards, freight forwarders, and drayage carriers operating around the I-710 and SR-91 corridors squarely in our service area. We know the territory.
You call or book online, tell us where your truck is located in Compton, and we schedule a time that works around your dispatch. We come to your yard, your dock, or wherever the truck is sitting whether that’s along Alameda Street, near the I-710 corridor, or anywhere else in the city. You don’t pull the truck off a run. You don’t burn fuel driving to a shop. The truck stays where it is.
When we arrive, we connect CARB-certified OBD diagnostic equipment directly to your truck’s onboard system. The test reads emissions data from the engine control module it’s not a visual inspection or a tailpipe sniff test. For 2013 and newer trucks with a GVWR over 14,000 pounds, this is the test CARB requires, and it has to be performed with approved equipment by a credentialed tester. That’s exactly what we bring.
Once the test is complete, we transmit your results directly to CARB’s CTC-VIS system. If your truck passes, your VIN shows compliant in the database and flows to DMV within a few business days. If there’s an issue, you’ll know immediately and you’ll have clear information on what needs to be addressed before a retest. No ambiguity, no waiting around to find out if the submission went through.
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The Clean Truck Check program established under California SB 210 and enforced by CARB applies to diesel and alternative fuel trucks that are model year 2013 or newer with a GVWR over 14,000 pounds. If your truck is older than 2013 or under that weight threshold, this test does not apply to you. We only perform this specific test, so there’s no confusion about what you’re booking.
Right now, qualifying trucks are required to test twice per year semi-annually. Starting October 1, 2027, that increases to four times per year. For a Compton fleet operator running 15 or 20 trucks on port routes, that’s a significant jump in testing volume. The annual CARB compliance fee is $31.18 per vehicle for 2025, but that’s separate from the cost of the test itself. Both are part of staying legal in California.
If CARB has already sent you a Notice to Submit to Testing, you have 30 days from that notice to submit a passing result. That clock doesn’t pause. On the other side of that window, you can also test proactively up to 90 days before your compliance deadline which gives you time to repair and retest if something comes back wrong. For operators running daily port turns between Compton and San Pedro Bay, proactive scheduling is almost always the smarter move.
If your truck is a diesel or alternative fuel vehicle, model year 2013 or newer, and has a GVWR over 14,000 pounds, then yes the Clean Truck Check applies to you regardless of where in California you’re based. Compton’s drayage operators, port-run carriers, and warehouse fleets along the I-710 and Alameda Street corridor are exactly the vehicle population this program targets.
It also applies to out-of-state-registered trucks that operate on California public roads. So if you’re running a truck registered in another state but making regular port turns through Compton and into the San Pedro Bay terminals, you’re still subject to the requirement. CARB tracks compliance by VIN, not by registration state, and port terminals are required to verify compliance before dispatching loads.
A failed test means your truck’s onboard diagnostic system flagged an emissions-related fault typically an active or pending fault code that indicates the engine or emissions controls aren’t performing within CARB’s acceptable range. It doesn’t automatically mean your truck is off the road that day, but it does mean you need to address the issue and retest before your compliance deadline.
The practical risk for Compton operators is timing. If you’re close to your deadline and your truck fails, you have a narrow window to get it repaired and retested before a DMV registration hold kicks in. That’s why testing early up to 90 days before your deadline gives you a real buffer. If something comes back wrong, you have time to fix it without your truck sitting idle during peak drayage season.
Currently, qualifying trucks must be tested twice per year once every six months. That’s the semi-annual requirement that’s been in effect since the program entered full enforcement in October 2024. The annual CARB compliance fee is $31.18 per vehicle for 2025, which is separate from the cost of the OBD test itself.
What’s coming that most Compton fleet operators aren’t fully prepared for: starting October 1, 2027, the testing frequency increases to quarterly four times per year. If you’re running a fleet of even 10 trucks, that’s 40 tests per year instead of 20. Establishing a testing relationship now, before that change takes effect, means you’re not scrambling to find a credentialed mobile tester in 2027 when demand spikes across the entire LA basin.
Yes that’s exactly how we work. We’re a mobile testing service, which means we come to your location in Compton rather than requiring you to bring the truck to a fixed shop. Whether you’re operating out of an industrial yard along Alameda Street, a warehouse near the I-710 corridor, or a lot anywhere else in the city, we schedule the test at your location during a window that fits your dispatch schedule.
For Compton’s drayage operators making multiple port turns per day, pulling a truck off the road to drive to a testing facility isn’t just inconvenient it’s a direct hit to daily revenue. Mobile testing eliminates that entirely. The OBD connection takes place on-site, the test runs on your truck where it sits, and we handle the CTC-VIS submission before we leave. Your driver can be back on a run the same day.
CTC-VIS stands for Clean Truck Check Vehicle Inspection System it’s the CARB database where all test results are submitted and where compliance status is tracked by VIN. When a credentialed tester completes your OBD test, the results go into this system, and CARB’s database then communicates your compliance status to the DMV. That’s how a passing test clears a registration hold the data flows from CTC-VIS to DMV, and your record updates within 3 to 5 business days.
You don’t need to log into the CTC-VIS portal yourself when you use us. We handle the electronic submission directly at the time of testing. This is one of the most common points of confusion for truck owners in Compton who’ve tried to navigate the compliance process on their own the portal isn’t designed for vehicle owners, it’s designed for credentialed testers. Booking a credentialed tester means that part is handled for you.
Because a test performed by someone without CARB credentials or using equipment that doesn’t hold a CARB Executive Order doesn’t count. It doesn’t show up in CTC-VIS as a valid result. Your VIN stays non-compliant in CARB’s system, and you’re still facing the same fines, the same registration hold, and the same 30-day NST clock as if you’d never been tested at all. You paid for a test that did nothing.
This is a real issue in the Compton and broader LA County market right now because the Clean Truck Check program is still relatively new and the market for testers is fragmented. Not every operator advertising CARB testing is actually on CARB’s credentialed tester list. Before you book anyone including us go to arb.ca.gov and verify. We’re listed. We use only CARB-certified OBD equipment with valid Executive Orders. Your test counts, your submission goes through, and your compliance record reflects it. That’s what you’re actually paying for.
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