CARB COMPLIANCE :
AT YOUR CONVENIENCE
EVERYTHING YOU NEED TO PASS YOUR CLEAN TRUCK CHECK INSPECTION TEST
The Heavy-Duty Inspection and Maintenance (HD I/M) Program aims to reduce pollution by removing high-emission vehicles from the road. Starting in 2023, trucks must undergo bi-annual testing and may be monitored through remote emissions checkpoints. Partnering with CarbTECH can help you stay in compliance with CARB regulations and keep your fleet running smoothly.
Mobile Inspection Testing
Stay CARB compliant with fast, mobile testing that keeps your diesel vehicles on the road with minimal downtime.
On-Site Services
Get expert help to ensure your fleet meets all CARB requirements with thorough inspections and compliance advice.
Compliance For Fleet Team
Let us take care of compliance, scheduling, and documentation—so you can focus on your fleet, not the fines.
A Valid HD I/M Compliance Certificate Is Required to Keep Your Vehicles on the Road
Beginning in 2023, the CARB HD I/M program applies to heavy-duty vehicles across California. To stay road-legal, vehicles must be registered in the HD I/M database and submit emissions testing results twice annually. Non-compliance may lead to registration denial.
When a truck is sidelined for non-compliance, it’s not making money. CARB’s roadside emissions monitors can trigger unexpected citations, but with the right preparation, testing notices don’t have to disrupt your operations.
The team at CarbTECH, is here to help you stay ahead of HD I/M regulations. We maintain digital records for every vehicle in your fleet and track when each one is due for an opacity test, diesel inspection, or OBD data submission—so you don’t have to. Let us manage the compliance details while you focus on running your business.
CARB Compliance Services
Quick, Dependable Testing—On-Site or Mobile—to Keep Your Trucks Running
Emissions Testing for
2012 & Older Diesel Engines
Diesel trucks from 2012 or older must pass emissions tests under CARB’s Clean Truck Check. Without OBD systems, these vehicles are tested using smoke opacity and visual inspections.
Emissions Testing for
2013 & Newer Diesel Engines
For diesel trucks model year 2013 and newer, CARB mandates On-Board Diagnostics (OBD) testing to track emissions performance. These vehicles are equipped with OBD systems, enabling digital emissions monitoring rather than traditional smoke opacity testing.
Emissions Testing for
Fleet Operators
Staying CARB compliant across a large fleet can be complex. Our Fleet Compliance Management service simplifies tracking, scheduling, and maintaining compliance for all your vehicles.
Obtaining CARB Compliance
The Clean Truck Check—also know as the Heavy-Duty Inspection and Maintenance (HD I/M) Regulation—is a CARB initiative designed to ensure heavy-duty vehicles maintain effective emissions control systems throughout their service life. This regulation applies to nearly all diesel and alternative fuel heavy-duty vehicles operating on California’s public roads, regardless of where they’re registered.
1
Register Your Truck(s)
with CARB Online
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Log in & update your truck’s status
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Upload emissions compliance documents if required
Need Help? Contact Us:
(760) 713-2760
How to Get CARB Compliant: A Step-by-Step Guide
OUR SERVICE AREA
We Serve All Of
California
We make it our mission to Ensure your truck or motorhome is CARB Compliant
Fast mobile Testing Services - Licensed & Insured through Clean Truck Check (CTC)
Dealing with Additional CARB Compliance Issues?
If you operate diesel equipment, staying CARB compliant is essential for your success. With our deep understanding of the regulations, we help you maintain compliance across your fleet. Our diesel consulting team is dedicated to resolving your compliance challenges quickly, so your equipment can get back to work without delay.
Questions About CARB HD I/M?
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What types of vehicles fall under the HD I/M regulations?All heavy-duty diesel trucks with a gross vehicle weight rating (GVWR) of 14,000 pounds or more are required to have a compliance certificate.
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How frequently do I need to submit test results?Under the program, older trucks are required to submit smoke opacity test results twice a year, while vehicles equipped with on-board diagnostic (OBD) systems can transmit data remotely. At CarbTECH, we maintain detailed digital records for your fleet, making the compliance process simple and stress-free.
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What steps are required to maintain HD I/M compliance?To stay compliant, you must register your vehicle with the program, submit emissions test results on time, address any outstanding compliance issues, and pay the required annual fee.
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What are the consequences of not obtaining a compliance certificate?Heavy-duty trucks without a valid compliance certificate will be denied registration. Keeping your compliance current is essential to keeping your business running smoothly.
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I’ve received a Notice to Submit for Testing—what are my next steps?Alongside regular truck testing, CARB is deploying remote diesel engine inspection equipment across California. Receiving a Notice to Submit for Testing (NST) indicates your vehicle did not pass a roadside emissions check. To maintain compliance, you’ll need to complete testing and make any required repairs.
Locations
Victorville
Los Angeles
Riverside
Anaheim
Contact
760-713-2760
Opening Hours
Mon - Fri
7:00 am – 8:00 pm
Saturday
9:00 am – 7:00 pm
Sunday
10:00 am – 6:00 pm