Mobile Fleet Clean Air Checks in California's Central Valley — We Test at Your Location
For fleet managers and trucking companies in California's Central Valley, staying current on CARB Clean Truck Check emissions testing requirements isn't optional — and the process has to work around your operation, not against it. ST Pros is built for exactly that. We're a mobile Clean Air Check provider that comes directly to your fleet location, tests multiple vehicles in a single visit, and helps you keep your trucks compliant without pulling them out of rotation any longer than necessary.
Whether you manage a regional trucking operation, a local delivery fleet, or a mixed vehicle pool, ST Pros works with you to schedule mobile testing at your yard or business address. You tell us how many trucks you need tested and when works for your operation — we handle everything else.
Why Commercial Fleets Choose ST Pros
We come directly to your fleet location — no facility visits, no towing, no lost driver hours getting to a test station
Multiple vehicles tested in one scheduled visit — efficient use of your time and ours
Approximately 20 minutes per truck — fast, professional, and thorough
Results submitted to the state within 24 hours of testing — compliance records updated efficiently
Fleet pricing available — discounts on additional vehicles tested in the same visit
Convenient scheduling — we work around your operation's calendar
Licensed and insured — fully credentialed mobile testing professionals
20+ years of Central Valley commercial vehicle testing experience
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How Fleet Testin Works With ST Pros
Call or Text ST Pros
Reach us anytime at 559-824-4291. Tell us your fleet location, the number of vehicles, and your preferred date.
We Schedule Your Visit
We work around your operation's schedule and confirm a convenient appointment for our mobile team to come to you.
We Come to Your Location
Our mobile testing team arrives at your fleet yard, business, or designated location in California's Central Valley.
On-Site Testing
We test each eligible truck or vehicle on-site. A typical Clean Air Check takes approximately 20 minutes per vehicle.
Results Submitted to State
Test results are submitted directly to the state system, updating your vehicle's Clean Truck Check compliance records.
Fleet Back on the Road
With testing complete, your drivers and trucks can get back to work — with documentation for your records available upon request.
What Your Fleet Needs to Have Ready
Fleet testing with ST Pros is straightforward. For your scheduled visit, please ensure the vehicles you want tested are on-site and accessible to our mobile testing team. Trucks should be running and available for the duration of the test — approximately 20 minutes per vehicle. That's it. We handle the equipment, the process, and the state submission.
Fleet Pricing & Discounts
ST Pros offers special fleet pricing when multiple vehicles are tested during a single visit. After the first truck, discounts apply to additional inspections. Military discounts are also available for eligible customers. Contact us at 559-824-4291 for current fleet pricing information and to get a quote for your operation.
CARB Testing Frequency for Commercial Fleets
Most vehicles currently subject to California's Clean Truck Check program require emissions compliance testing twice per year. Beginning October 1, 2027, OBD-equipped vehicles will be required to complete testing four times per year. Requirements can vary based on vehicle type and equipment. ST Pros helps eligible fleet owners and managers stay on top of applicable testing timelines.
Serving Fleets Across the Central Valley
We serve commercial fleets throughout the Central Valley — Fresno, Clovis, Madera, Selma, Bakersfield, and surrounding communities within approximately a 75-mile radius of Clovis. Large fleet? Multiple locations? Call us and we'll work out the right approach for your operation.
Fleet Clean Air Check FAQs
Can you test multiple trucks during one visit?
Yes. ST Pros can perform mobile Clean Air Check testing for multiple trucks during the same visit. If you have several commercial trucks or heavy-duty vehicles at your fleet location, we can test the vehicles that are on-site, helping streamline the testing process and minimize downtime for your fleet.
How long does fleet testing take?
A typical Clean Air Check takes approximately 20 minutes per truck. For fleets with multiple vehicles, total testing time depends on the number of trucks being tested and site conditions. ST Pros comes directly to your location to help make the process as convenient and efficient as possible.
Do you offer fleet pricing?
Yes. ST Pros offers special fleet pricing when multiple vehicles are tested during the same visit. After the first truck, discounts are available on additional inspections. We also offer military discounts for eligible customers. Contact ST Pros at 559-824-4291 for more information about fleet pricing and available discounts.
How do we schedule fleet testing?
Scheduling your mobile fleet Clean Air Check is easy. Call or text ST Pros at 559-824-4291, let us know your fleet location and how many vehicles you need tested, and we'll work with you to find a convenient time. We come directly to your location throughout California's Central Valley.
What does the fleet need to have ready for testing?
Simply have the trucks or vehicles you want tested on-site and accessible when our mobile team arrives. Vehicles should be running and available for approximately 20 minutes per truck. No special preparation is required beyond making sure the vehicles are present and accessible at your fleet location.
Schedule Your Fleet Clean Air Check — Call or Text 559-824-4291 Anytime