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Your truck makes money when it’s moving. Every hour spent driving to a smog test station, waiting in line, and driving back is an hour you’re not billing. That adds up fast when you’re required to test twice a year.
California’s Clean Truck Check program requires every diesel truck over 14,000 pounds with a 2013 or newer engine to complete CARB emissions testing every six months. Miss a deadline and the DMV puts a registration hold on your vehicle. You can’t legally operate until you’re compliant again.
The fines start at $1,000 per day, per vehicle. For some violations, they can reach $75,000 per day. Even if you’re a one-truck operation, that’s enough to shut you down. If you’re running a fleet, the math gets worse quickly.
We bring the CARB certified smog check to you. Your truck gets tested at your yard, job site, or wherever it’s parked in West Hollywood. The test takes under five minutes for most newer diesel engines using OBD diagnostics. Results go straight to CARB electronically, and you get a copy for your records.
We’ve been helping truck operators stay CARB compliant in West Hollywood and across California for over two years. Our testers are state-certified and trained specifically on heavy-duty diesel emissions systems. We’re not a general smog shop that happens to test trucks. This is what we do.
Before we started testing, we spent 25 years as owner-operators in the construction industry. We know what it’s like to juggle job schedules, manage equipment, and deal with regulatory headaches. CARB regulations are complicated, they change often, and the consequences of getting it wrong are severe.
West Hollywood sits in the heart of LA County, where heavy-duty trucks move goods through some of the most congested corridors in the state. You’re dealing with tight delivery windows, traffic that can turn a 20-minute drive into an hour, and customers who don’t care about your compliance deadlines. We built our mobile service because we understand that your time is limited and your margins are tight.
You tell us where your truck is in West Hollywood and when works for your schedule. We show up with our state-certified testing equipment. Early morning before your first run, late afternoon after you’re back, weekends—whatever fits your operation.
For trucks with 2013 or newer diesel engines, we run an OBD inspection. We plug into your truck’s onboard diagnostics system and pull the emissions data directly from the engine computer. The test usually takes less than five minutes. If your truck passes, we transmit the results to CARB immediately and hand you a copy.
If there’s an issue, we’ll tell you exactly what it is and what needs to happen next. Sometimes it’s a sensor that needs replacement. Sometimes it’s a regeneration cycle that didn’t complete. We’ve worked with CARB directly on behalf of clients to resolve compliance issues, reduce penalties, and get trucks back on the road faster.
Once your test is complete and filed with CARB, you’re good for the next six months. No registration hold, no fines, no DMV hassles. If you’re running multiple trucks, we can test your whole fleet in one visit. You stay focused on your work while we handle the compliance piece.
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This service is specifically for diesel trucks with a gross vehicle weight rating over 14,000 pounds and a model year of 2013 or newer. If your truck doesn’t meet both of those criteria, it’s not subject to the Clean Truck Check program and doesn’t need this test.
You get a CARB-certified tester who comes to your location anywhere in West Hollywood. We bring all the equipment needed to perform a compliant emissions test. Results are transmitted directly to CARB’s system with an encrypted data snapshot. You receive a printed copy of your test results immediately.
The annual compliance fee for 2025 is $31.18 per vehicle, which CARB collects separately. Our service covers the actual testing, the travel to your location, and the reporting. If you’re managing a fleet, we can coordinate testing schedules to minimize disruption and keep all your vehicles on the same cycle.
West Hollywood’s location means you’re likely operating in and around LA’s busiest commercial zones. Drayage operators serving the ports, construction companies working across the county, and logistics fleets running regional routes all face the same compliance requirements. The Clean Truck Check program is expected to prevent 7,500 air-quality related deaths and 6,000 hospitalizations between 2023 and 2050, which is why enforcement is strict and getting stricter.
Every six months. If your diesel truck has a gross vehicle weight rating over 14,000 pounds and a model year of 2013 or newer, you’re required to test twice a year under California’s Clean Truck Check program.
CARB tracks your compliance dates and reports them to the DMV. If you miss a testing deadline, the DMV will place a registration hold on your vehicle. That means you can’t renew your registration, and technically you can’t legally operate the truck until you complete the test and clear the hold.
The six-month cycle is firm. You can test early, but you can’t push it back. If you’re running multiple trucks, it helps to stagger the testing dates so you’re not scrambling to get everything done at once. We can help you set up a schedule that spreads out your compliance requirements throughout the year.
You’ll need to fix whatever caused the failure and retest. The most common reasons for failure are issues with the diesel particulate filter, problems with the selective catalytic reduction system, or fault codes stored in the engine computer.
We’ll tell you exactly what the issue is based on the diagnostic data. Sometimes it’s a sensor that’s malfunctioning. Sometimes the DPF needs a forced regeneration or replacement. Sometimes there’s an emissions system component that’s not working correctly.
You’ll need to get the repair done, then schedule a retest. Once the issue is fixed and the truck passes, we submit the passing results to CARB and you’re compliant. If you’re facing fines or a registration hold because of a failed test, we can work directly with CARB to explain the situation and help resolve it. We’ve successfully negotiated reduced penalties for clients who are actively working to fix their trucks.
No. Heavy-duty diesel trucks require a CARB-certified tester who’s specifically trained and credentialed for emissions control system inspections. Regular smog check stations that test cars and light-duty vehicles aren’t equipped or certified to test your truck.
The good news is that unlike light-duty smog checks, you don’t have to go to a physical testing location. CARB allows mobile testing for heavy-duty vehicles, which is why we can come to you. The tester still needs to be state-certified and use approved equipment, but the test can happen wherever your truck is parked.
This is a huge advantage if you’re operating in West Hollywood. You don’t have to take your truck out of service, fight traffic to get to a testing station, wait in line, and drive back. We bring the test to your yard, job site, or wherever you need us. The test results are just as valid as if you drove somewhere, but you save hours of downtime.
Fines start at $1,000 per day, per vehicle. For more serious violations, they can reach $75,000 per day. On top of that, the DMV will place a registration hold on your truck, which means you can’t legally operate it until you’re compliant.
If you’re running a business, even a few days of fines and lost work can be devastating. A single truck sitting idle because of a registration hold means no revenue, missed jobs, and potentially lost clients. If you’re managing a fleet, multiply that by every non-compliant vehicle.
CARB is actively enforcing these regulations. They’re not warnings or suggestions. The Clean Truck Check program is a legislative mandate, and the state is serious about compliance. The program is expected to yield $75 billion in health benefits over the next few decades, so the enforcement isn’t going away.
The cost of staying compliant is a fraction of the cost of a single violation. Testing twice a year is straightforward, fast, and far cheaper than dealing with fines, registration holds, and the operational chaos that comes with grounded equipment.
Yes, if your truck meets the weight and model year requirements and you’re operating in California. CARB’s regulations apply to any heavy-duty diesel truck operating on California roads, regardless of where it’s registered.
If you’re an out-of-state operator running loads into or through California, you’re subject to the same Clean Truck Check requirements as California-based trucks. That means testing every six months and maintaining compliance with CARB diesel emissions standards.
Enforcement happens at weigh stations, roadside inspections, and through DMV registration checks. If you’re caught operating a non-compliant truck in California, you’ll face the same fines and penalties as a California-based operator. We work with out-of-state operators regularly. If you’re running California routes, we can help you stay compliant without having to establish a relationship with a California-based shop or figure out the regulations on your own.
For most trucks with 2013 or newer diesel engines, the OBD test takes less than five minutes. We plug into your truck’s onboard diagnostics port, pull the emissions data from the engine computer, and analyze it on the spot.
Older trucks or trucks that require a smoke opacity test can take a bit longer, but we’re still talking about minutes, not hours. The actual testing process is quick. The bigger time-saver is that we come to you, so there’s no travel time, no waiting in line, and no taking your truck out of its normal location.
If you’re testing a fleet, we can move through multiple trucks efficiently in a single visit. You don’t have to coordinate drivers, move equipment around, or disrupt your operation. We show up, test your trucks, transmit the results to CARB, and you’re done. The whole process is designed to minimize downtime and keep your focus on running your business, not managing compliance paperwork.
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