Mobile Clean Truck Checks. On-Site Testing. On-the-Road Results.
We bring certified HD I/M testing directly to your yard, terminal, or driveway — keep your fleet compliant and on the road without the downtime.
Why Choose Us
We Make It Simple to Stay Compliant
Quick Service
In and out fast so you can get back on the road.
Accurate Results
Certified inspections you can count on.
Experienced Team
Skilled professionals who care about your time.
Driver Focused
Friendly service and honest support every time.
Don't Risk DMV Registration Blocks or CARB Penalties
California's HD I/M regulation requires all diesel vehicles over 14,000 lbs to carry a passing Clean Truck Check. Missing your deadline means automatic registration holds and fines starting at $250.
How We Test
We Cover Every Vehicle, Every Era
California's HD I/M program requires different testing methods depending on your vehicle's model year. We're certified for both.
2013 & Newer
OBD Testing
On-Board Diagnostics (OBD) testing is required for 2013 and newer diesel engines. We plug our certified equipment directly into your vehicle's data port, download the emissions data, and submit the results to the CARB database — typically in under 30 minutes per vehicle.
2012 & Older
OVI Opacity Testing
Older diesel engines without OBD systems require an Opacity/Visual Inspection (OVI) — a smoke opacity test performed using state-approved equipment. We come to your yard and run the full inspection on-site, keeping your older trucks compliant without a trip to a testing station.
Our Services
On-Site CARB Testing Tailored to You
Commercial Fleets & Owner-Operators
We perform OBD data downloads and opacity testing at your terminal or fleet yard. No deadhead miles, no line waits — just fast, certified compliance.
View Fleet ServicesDiesel RVs & Motorhomes
Got a DMV registration block on your diesel motorhome? We come to your home or storage facility — no navigating your rig through commercial truck lanes.
Book RV TestingWhy Pacific Coast
Why California Fleets Trust Us
100% Mobile Convenience
We drive to your yard. You don't lose hours paying drivers to sit in line at testing facilities.
CARB-Credentialed Testers
Our technicians hold active CARB credentials specifically for the Clean Truck Check (HD I/M) program.
Fast Direct Submissions
Test results are submitted directly to the CARB database, clearing holds and preventing DMV blocks.
Comprehensive Fleet Support
We track when each vehicle is due so you never miss a deadline. One call handles your whole fleet.
Knowledge Hub
Understand Clean Truck Check
Plain-English guides to California's CARB Clean Truck Check (HD I/M) program — requirements, penalties, testing, and registration.
What Is Clean Truck Check?
A plain-English breakdown of California's CARB Clean Truck Check (HD I/M) program — who it covers and how it works.
Read guideCARB Requirements (2026 Guide)
Which heavy-duty diesel vehicles must comply in 2026, how often you test, and what each inspection includes.
Read guideWhat Happens If You Fail?
Failed your Clean Truck Check? The most common causes, how to fix them, and how to get compliant fast.
Read guideClean Truck Check vs Smog Check
Why heavy-duty diesels follow a different program than a passenger smog check — and which test your engine needs.
Read guidePenalties in California
What non-compliance costs California fleets — DMV registration holds, daily fines, and CARB enforcement.
Read guideHow to Register in CTC-VIS
A step-by-step walkthrough of registering your fleet in the CTC-VIS database and paying your compliance fee.
Read guideFAQ
Frequently Asked Questions
Service Areas
Serving Southern California
We bring certified HD I/M testing directly to these cities and surrounding areas.
Get Started
Get Compliant Today
Fill out the form below and our team will reach out with a quick quote and scheduling options.