Mobile CARB Mobile Diesel Testing That Keeps Your Fleet Compliant
A&T Fleet Compliance brings CARB-certified diesel emissions testing directly to your lot, delivering fast on-site results and full documentation so your trucks stay road-ready anywhere.
From on-site CARB emissions assessments to comprehensive DEF diagnostics and DOT checks, A&T Fleet Compliance delivers everything your diesel fleet needs to meet regulations, avoid fines, and keep moving without downtime.
Our Services
Complete compliance and testing solutions designed around your fleet. From mobile emissions testing to documentation support, we make staying compliant simple and convenient.
CARB Clean Truck Check
Mobile CARB compliance testing performed at your location to help keep your fleet compliant.
Mobile Diesel Emissions Testing
Convenient on-site diesel emissions testing designed to minimize downtime and keep trucks moving.
Fleet Compliance
Practical compliance support to help your fleet meet California requirements and avoid unnecessary delays.
DEF & Emissions Diagnostics
Identify emissions and DEF-related issues quickly with professional diagnostic support.
On-Site Fleet Testing
We bring testing directly to your yard, facility, or fleet location for maximum convenience.
Compliance Documentation Support
Clear documentation and reporting to help you maintain accurate compliance records.
Why Fleets Choose A&T
Complete compliance and testing solutions designed around your fleet. From mobile emissions testing to documentation support, we make staying compliant simple and convenient.
Mobile Service
Testing comes directly to your fleet location.
Minimal Downtime
Efficient testing designed around your operating schedule.
CARB-Certified Technicians
Experienced professionals who understand California compliance requirements.
Fast & Responsive Scheduling
Get testing arranged when your fleet needs it.
Compliance Support
From testing to documentation, we help simplify compliance.
Fleet Solutions
Practical services designed specifically for commercial diesel fleets.
How Our Mobile Testing Works
Our process is designed for busy fleets. First, you book a convenient time; then our CARB-certified technician arrives with all necessary equipment, performs emissions testing, DEF diagnostics, and safety checks, and finally submits every document to CARB, leaving you completely compliant without visiting a test center.
Schedule Appointment
Pick the time that suits.
Secure Full Compliance
Paperwork filed, fleet stays compliant.
Complete All Testing
We run full emissions tests.
Driver Compliance Checks
Keep drivers ready, records up to date.
Our Comprehensive Service Offerings Overview
Every fleet faces unique operational pressures, and our menu of services addresses each one. Our mobile CARB emissions testing brings lab-grade analysis to your yard, while DEF diagnostics verify that exhaust treatment systems are performing efficiently. We conduct DOT compliance checks to prevent roadside violations, offer full-fleet on-site testing for large operations, and provide advanced diesel diagnostics with actionable repair recommendations. Seasonal fleet checks prepare vehicles for temperature extremes, ensuring reliability, safety, and uninterrupted uptime all year.
Mobile CARB Emissions Testing
Our technicians arrive with portable analysis equipment to test each diesel vehicle on your schedule. The service includes opacity measurement, data capture, and immediate results. Upon passing, we issue CARB-compliant certificates and upload all required documentation, saving you office time and keeping your fleet legally on the road.
Fleet DEF Diagnostics
Detect and correct DEF system issues.
DOT Compliance Checks
Prevent fines with thorough safety inspections.
Seasonal Fleet Checks
Prepare vehicles for extreme weather demands.
Why Fleets Trust Our Team
Compliance is more than a test result; it is peace of mind for operators who depend on every haul. A&T Fleet Compliance is staffed by CARB-certified professionals who understand current regulations and monitor upcoming rule changes. We work around your dispatch schedule, provide after-hours service when required, and bring specialized equipment that handles everything from light-duty pickups to Class 8 tractors. Our meticulous documentation process has earned a consistent record of successful audits and satisfied clients throughout California.
What Our Customers Say
From single-truck owners to large fleet operators, customers rely on AT Fleet Compliance for fast, professional, on-site emissions testing that keeps their vehicles compliant and their operations moving.
Having the testing done right at our yard made the entire process incredibly easy. The technician arrived on time, explained everything clearly, and completed the testing without disrupting our operations.
Fleet Manager, Northern California
We have several vehicles that need to stay compliant, and AT Fleet Compliance made the process simple. The on-site service saved our drivers a trip and helped us avoid unnecessary downtime.
Transportation Manager, California
Professional, punctual, and easy to work with. They handled the emissions testing efficiently and made sure we understood what was needed for compliance. We’ll definitely use them again.
Fleet Owner, Bay Area
Serving Fleets Across Northern California.
- Bay Area
- Sacramento
- Central Valley
- San Francisco Peninsula, and surrounding areas.
statewide service is available for scheduled fleet projects
Need Your Truck Tested ?
Schedule mobile testing with A&T Fleet Compliance or call us to discuss your fleet’s testing and compliance needs.
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