CARB-Credentialed Tester
Authorized by the California Air Resources Board to perform official Clean Truck Check inspections.
Service
Clean Truck Check
CARB-credentialed inspections to keep your heavy-duty diesel fleet compliant.
Clean Truck Check by Upland Smog Center
As a CARB-credentialed Clean Truck Check tester, Upland Smog Center performs official periodic smoke and OBD inspections for heavy-duty diesel trucks operating in California.
Our team handles the full inspection process — running the required emissions tests, reviewing results, and submitting your compliance report directly to the California Air Resources Board so your trucks stay legal on the road.
Whether you're an owner-operator or managing a fleet, we make it fast, accurate, and hassle-free.
OBD & Smoke Testing
Complete periodic OBD scans and opacity smoke testing for heavy-duty diesel vehicles.
Compliance Reporting
Results submitted directly to CARB so your fleet stays compliant and road-ready.
Fleet Friendly
Fast, accurate inspections for owner-operators and fleets of all sizes.
Schedule Your Clean Truck Check
Call us today to book your CARB-compliant heavy-duty diesel inspection.