- OBD / OVI Opacity Clean Truck Testing
Professional Mobile CARB CTC/VIS Compliance Testing in Dublin, CA
Over 5,000 Diesel Tests Performed in Dublin, CA. CARB Compliance Made Easy – We Come to You!
We Bring CARB Compliance Directly to Your Trucks, RVs, and Pickup Trucks in Dublin, CA
Don’t disrupt your operations for emissions testing. Our expert mobile service offers precise opacity testing and OBD diagnostics right at your yard, warehouse, or job site in Dublin, CA. We perform quick, thorough inspections on every vehicle, providing accurate results without the hassle.
Stay Ahead of Clean Truck Check (CTC) Regulations in Dublin, CA
Compliance doesn’t have to be complicated. With over 20 years of experience in diesel emissions testing, we are the trusted partner for Northern California fleets, including Dublin, CA. At JTD Clean Truck Check, we ensure every inspection is performed with state-of-the-art accuracy, providing comprehensive documentation and free retesting if repairs are needed.
We Do Big Trucks and Not So Big Trucks
We Do Lots of Motorhomes
We Are Certified
Your On-Demand CARB Compliance Solution
We’re your mobile solution for CARB compliance. Our team of licensed, insured, and certified technicians brings the Clean Truck Check directly to you, saving you time and hassle.
- Mobile & Convenient
- Expert Technicians
- State-of-the-Art Equipment
- Fully Licensed & Insured
- Comprehensive Support
- Transparent & Upfront Pricing
- Quick & Efficient Testing
- Proven Track Record
- Free Retest if Your Vehicle Fails
- Flexible Scheduling Options
- Assistance with DMV Holds & Registration Issues
- CARB-Certified Testing Equipment
- Detailed Compliance Reports Submitted Directly to CARB
Where Expertise Meets
Every Project
Mobile Testing!
On-site testing at fleet locations or businesses
Emissions Testing
Periodic OBD and opacity/smoke tests, required for compliance
Fleet Compliance
Get support with vehicle registration
DMV & Admin Support
Assistance with registration holds, ongoing compliance monitoring
Diagnostics
Pre-test diagnostics, emissions-related diagnostics.
Fleet Discounts
Special pricing and tailored services for multiple vehicles (Some Restrictions Apply)
Professional Mobile Diesel Emissions Testing in Dublin, CA
OBD Testing
Our On-Board Diagnostics (OBD) testing inspects engine and emissions systems to ensure CARB compliance. Performed on-site by credentialed HD I/M Technician it identifies potential faults early, helps prevent costly repairs, keeping your fleet safe, efficient, and fully compliant year-round.
OVI Testing
OVI (On-Board Vehicle Inspection) testing evaluates emissions and performance systems for regulatory compliance. Mobile service ensures thorough inspections, accurate diagnostics, and hassle-free reporting, helping managers maintain efficiency, avoiding fines and keeping vehicles road-ready.
Smoke Opacity Testing
We measure smoke particulate, emissions from diesel trucks, 1-ton or larger trucks, motorhomes and buses to ensure CARB compliance. Mobile and precise, our service includes on-site testing and free retesting if needed (some restrictions apply), for you to maintain fully compliant records.
Truck Inspection
Full truck inspections cover emissions, safety, and operational efficiency. Our credentialed HD I/M technicians perform thorough on-site checks, identify potential issues, ensuring vehicle meets CARB standards, and remains efficient, giving owners or fleet managers peace of mind and complete regulatory compliance.
Clean Truck Check Testing
The Clean Truck Check program requires periodic emissions testing for diesel trucks, 1-ton or larger trucks, motorhomes and buses. Our mobile service performs precise CTC inspections, delivers instant results, helping fleets stay CARB-compliant, avoid penalties, and keep vehicles road-ready with minimal disruption or downtime.
Truck Emissions Testing
We provide comprehensive diesel truck emissions testing, including opacity and engine diagnostics. Our mobile service ensures quick, accurate results and full compliance. Free retesting is available for any failed units (some restrictions apply), keeping your vehicles operational and fully compliant.
How Much Does It Cost?
Registration Hold
CARB CTC-VIS- CTC-VIS fees paid on your behalf
- 1 year CARB alert monitoring
- CARB Vehicle Compliance Certificate
- We'll enter your vehicle into CARB
Clean Truck Check
Standard CTC- OBD On Board DIagnostics CTC
- OVI Opacity & Visual Inspection CTC
- Visual Inspection for Alt Fuel
- Free Retest*
Co-Entity Admin
CTC-VIS by CARBtrax- CARB compliance assured
- Paid CTC-VIS Compliance fees
- CARB Alerts Monitored
- Discounted Clean Truck Checks
California's Clean Air Agency
CARB is charged with protecting the public from the harmful effects of air pollution and developing programs and actions to fight climate change. From requirements for clean cars and fuels to adopting innovative solutions to reduce greenhouse gas emissions, California has pioneered a range of effective approaches that have set the standard for effective air and climate programs for the nation, and the world. CARB’s mission is to promote and protect public health, welfare, and ecological resources through effective reduction of air pollutants while recognizing and considering effects on the economy. CARB is the lead agency for climate change programs and oversees all air pollution control efforts in California to attain and maintain health-based air quality standards.
Clean Truck Check (HD I/M) Information
CARB
Basics
Requirements
OBD
Regulation
News
Mobile Smoke Check
California Mobile Smoke Check is comprised of CARB trained compliance testers and inspectors who have met regulatory requirements to be credentialed for the Clean Truck Check program, formerly known as “Heavy-Duty Inspection and Maintenance.” Our staff are highly proficient in opacity measurements of diesel vehicles greater than 14,000 pounds using SAE’s stabilized J1667-201802 standard for instrumentation and describes the algorithm we use for the measurement and quantification of exhaust smoke produced during the test. Our opacity test equipment is the same the government uses and conforms to SAE J1667 specifications under declaration of compliance with the CARB mobile source enforcement branch. By using the latest compliant test instruments utilizing the light extinction principle where a beam of light is attenuated by smoke through scattering and absorption, the analyzed data is measured to produce an accurate Clear Truck Check report for you and the state of California.
Your On-Demand CARB Compliance Solution
- Mobile & Convenient
- Expert Technicians
- State-of-the-Art Equipment
- Fully Licensed & Insured
- Comprehensive Support
- Transparent & Upfront Pricing
- Quick & Efficient Testing
- Proven Track Record
- Free retest if needed (Conditions Apply)
- Flexible Scheduling Options
- CARB Testing
- Clean Truck Check (CTC)
- Mobile Service
- Stay Compliant
- Avoid Fines
- Heavy-Duty Vehicle
- Free Consultation
- Call for a Quicker Response
Immediate Test Results!
Our Mobile Clean Truck Check Services
We do Heavy & Light Duty Trucks, buses and Motorhomes.
OBD and Opacity!
No Waiting!
Get your emissions report on the spot!
Truck
Precondition
Your truck should be warmed-up under load for at least 15 minutes to ensure proper test conditions verified by water and oil temperature gauges.
Truck Safety
Check
Your truck will be prepared for testing and includes a safety check. An inspection for exhaust leaks is performed to prevent erroneous test results.
Truck
Precondition
Ambient air is measured and correction factors are generated. Calibration and correction factors are set per manufacturer's specifications and set-up procedures.
Truck
Precondition
Execution of cycle testing is correlated to validation criteria for zero shift deviation values and 3-cycle average opacity and density. If criteria are not met, recheck previous steps and repeat test sequence.
Our OBD Emissions Data Capture Procedure Steps
Truck
Precondition
Your truck should be warmed-up under load for at least 15 minutes to ensure proper test conditions verified by water and oil temperature gauges.
Truck Safety
Check
Your truck will be prepared for testing and includes a safety check. An inspection for exhaust leaks is performed to prevent erroneous test results.
Equipment Setup
Our VIC provides galvanic isolation between your truck and our computer and is established with proper protocol and driver. WAN network link is established. Vehicle and tester credentials are captured and entered.
Execution & Validation
CARB compliant Clean Truck Check HD I/M OBD scanner begins emissions data acquisition from truck. Data is formatted to create an encrypted snapshot that is uploaded to CARB for Pass/Fail data analysis.
Frequently Asked Questions
Our Clean Truck Check testing services are designed to make CARB compliance simple for truck owners, fleet operators, and RV drivers. Many customers have questions about testing requirements, scheduling, reporting, and compliance timelines. Below are answers to the most common questions related to mobile emissions testing, inspection procedures, and compliance documentation. If you need additional assistance, our team is always available to guide you through the process and help keep your vehicles fully compliant.
Read MoreContact Us
Send us a message or call us for any bookings and queries. We are here to assist you.