Welcome to Clean Truck Check Authority

CARB-Compliant Diesel Testing Made Simple

At CTC Authority, We Help Truck Owners, RV Drivers, And Fleet Operators Stay Fully Compliant With California’s Clean Truck Check Program. With Over 7 Years Of Emission Testing Experience And Hundreds Of 5-Star Reviews, We Make Emissions Compliance Simple — Mobile, Same-Day, And Stress-Free.

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[About Us]

Experts in Diesel Emissions Testing

We Specialize In Emissions Testing For Diesel Vehicles Over 14,000 Lbs GVWR. Our Mission Is To Simplify The Compliance Process For California Drivers — Whether You’re Running A Single Rig Or Managing A Full Fleet. From Mobile Inspections To Automated Plug-And-Play Devices, We Help You Stay On The Road And In Compliance With Confidence.

Independent truck owners

Fleet managers

RV drivers

Logistics companies

Why Choose Us?

Over 900 five-star emission reviews from happy clients

Trusted by fleets, logistics teams, and RV owners

CARB-certified testers with expert-level support

Step-by-step help through the full process

[How We Help]

Complete Support from Start to Finish

From Helping You Schedule A Mobile Test To Walking You Through CARB’s CTC-VIS Portal, We Make The Entire Compliance Process As Seamless As Possible. Whether You Need A One-Time Test Or Full-Service Emissions Automation — We’ve Got You Covered.

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[Our Services]

Reliable Testing & Smart Compliance Solutions

OBD Testing

Certified testing for diesel vehicles over 14,000 lbs

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Opacity Testing

Ideal for port, yard, and non-OBD trucks

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CTC Intelligence

Plug-in device for 24/7 emissions monitoring

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CTC-VIS Setup

Hassle-free portal registration and support

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[Regional Coverage]

Proudly Serving Southern California

We operate throughout Los Angeles, Orange County, Riverside County, and North San Diego County. Wherever your diesel vehicle goes — we help keep it compliant.