Resources & Compliance Guides
California Clean Truck Check Resources & Compliance Guides
Air Compliance Testing (ACT) is California's mobile Clean Truck Check testing provider for commercial truck owners, owner-operators, and fleet operators. This resource center delivers plain-language guides, compliance walkthroughs, and practical information to help you understand California Clean Truck Check requirements and stay on schedule.
Whether you manage a single truck or a large commercial fleet, find articles, guides, and answers organized by topic below — or jump straight to scheduling.
Featured Guides & Articles
Practical information for California truck owners, owner-operators, and fleet managers — written to help you understand Clean Truck Check requirements and stay compliant.
Clean Truck Check
California Clean Truck Check: A Guide for Truck Owners
A plain-language overview of what California Clean Truck Check is, who needs testing, and how to get compliant — written for individual truck owners and owner-operators.
Clean Truck Check
How Mobile Clean Truck Check Testing Works
Step-by-step walkthrough of ACT's mobile on-site testing process — from scheduling to receiving your compliance record — so you know exactly what to expect.
Fleet Compliance
Clean Truck Check Testing for Commercial Fleets
How fleet operators and fleet managers can coordinate multiple truck tests in one visit, reduce downtime, and take advantage of fleet pricing through ACT.
Fleet Management
What Fleet Managers Should Know About California Clean Truck Check
Key compliance responsibilities, scheduling strategies, and how ACT's centralized fleet scheduling and testing reminders help fleet managers stay on top of requirements.
Testing & OBD
OBD Testing and California Heavy-Duty Vehicles
What OBD testing involves, which vehicles it applies to, and how ACT performs on-board diagnostic testing as part of the Clean Truck Check program.
Owner-Operator Resources
How to Prepare Your Truck for a Clean Truck Check Appointment
A practical checklist for truck owners and operators — what to have ready before ACT arrives so your testing appointment runs smoothly and efficiently.
Fleet Compliance
Mobile vs. Off-Site Clean Truck Check Testing
Compare mobile on-site testing with traditional off-site testing locations — and see why California fleets increasingly choose ACT's mobile service to minimize downtime.
Owner-Operator Resources
Clean Truck Check Testing for Owner-Operators
Everything independent owner-operators need to know about Clean Truck Check requirements, scheduling a single-truck appointment, and staying compliant in California.
Ready to Schedule Clean Truck Check Testing?
Air Compliance Testing provides fast, professional mobile Clean Truck Check testing for California truck owners and commercial fleets. Get a quote or schedule your appointment today — ACT comes directly to your yard, facility, or business location.