CARB Extends Clean Truck Check Reporting Deadline
As the Dec. 31 deadline looms for owners of trucks operating in California to get them registered in the Clean Truck Check database, the California Air Resources Board announced it is extending the reporting deadline to Jan. 31, 2024.

A demonstration of the California heavy-duty truck smog-check apparatus at the Port of Los Angeles.
Photo: CARB
As the Dec. 31 deadline looms for owners of trucks operating in California to get them registered in the Clean Truck Check database, the California Air Resources Board announced it is extending the reporting deadline to Jan. 31, 2024.
Clean Truck Check, previously called the Heavy-Duty Inspection and Maintenance Program, is supposed to ensure that heavy-duty vehicles operating in California are well-maintained and repaired quickly when needed to reduce emissions. It covers nearly all non-gasoline vehicles with a gross vehicle weight rating over 14,000 pounds operating in the state.
As HDT reported previously, the program is being implemented in three phases. The first phase started Jan. 1, 2023, with the deployment of Remote Emissions Monitoring Devices. These monitor the exhaust emissions of passing heavy-duty vehicles and flag potential high emitters.
Phase 2 of Clean Truck Check
The phase for which the deadline is being extended is Phase 2, which started Oct. 1. It requires vehicle owners who are subject to the program to enter their vehicles in CARB’s Clean Truck Check database and pay an initial annual compliance fee of $30 per vehicle by Dec. 31 (now Jan. 31).
After that deadline, all trucks driving in California will need proof of compliance to continue operating in the state.
Phase 3 of Clean Truck Check will require heavy-duty vehicle owners to conduct periodic emissions testing. This is similar to California’s Smog Check program for cars. Periodic testing begins in 2024 and applies to all compliance deadlines after July 1, 2024.
Information on How to Comply with Clean Truck Check
To access the reporting database to complete reporting requirements, visit the California Clean Truck Check, Vehicle Inspection System (CTC-VIS) Portal.
For additional information and guidance regarding the Clean Truck Check reporting requirements, training, fact sheets, and other helpful information are available on the Clean Truck Check Program Page.
You can also find training videos on the reporting page posted in English, Spanish, and Punjabi. There are seven short training module videos for specific reporting topics, as well as the "Question and Answer” forum from a previously held reporting training webinar on Nov. 3, 2023.
CARB staff recommend watching a recording of the training prior to logging into the database and completing fleet reporting requirements.
In addition, CARB has scheduled an online training webinar on the CTC-VIS reporting database for Jan. 9, 1:30 p.m. – 5:00 p.m. (Pacific Time)
More Fuel Smarts

How GP Transco Builds Fuel Savings a Fraction at a Time
Aerodynamic specs, solar panels, and driver incentives help GP Transco turn small efficiency gains into savings it can reinvest in its people.
Read More →
Trucking’s Diesel Squeeze Isn’t Letting Up
With diesel topping $6 a gallon nationally, ATA's Bob Costello explains why fleets should prepare for continued pressure at the pump.
Read More →
FlowBelow Redesigns Trailer AeroSlider to Cut Fuel Use
The lighter trailer aerodynamic system installs in less than 45 minutes, according to the company, with potential payback in under a year depending on fuel prices and trailer mileage.
Read More →
Why Diesel Price Relief Efforts May Fall Short
Diesel prices have eased from September’s record high, but doubts about additional Russian supply and limits on dyed-diesel tax relief mean trucking fleets still face expensive fuel. And prices could go higher.
Read More →Why Small Fuel Savings Matter in Trucking
Can better fuel economy help pay for driver raises? In this podcast, GP Transco explains how small efficiency gains create room to reinvest in its people.
Read More →How GP Transco Cuts Trucking Fuel Costs, a Tenth of a Gallon at a Time
What’s another tenth of a mile per gallon worth? GP Transco shares how equipment upgrades and driver coaching turn small gains into meaningful fuel savings.
Read More →
Electric Yard Tractors Move Beyond Pilots
Operating-cost savings have overtaken sustainability goals as the leading reason surveyed fleets are adopting battery-electric terminal tractors, according to new NACFE research.
Read More →
Geotab Links Fleet Card to Vehicle Data
The new card combines fuel discounts with telematics-based purchase controls. Geotab’s analysis also points to potential savings from choosing lower-priced fuel stops.
Read More →
Fleet Economics Shape Electric Truck Outlook
ACT Research expects costs, charging infrastructure, and technology improvements to drive zero-emission commercial vehicle adoption as federal regulations and incentives retreat.
Read More →
Wex Adds Cardless Fuel Payments for Over-the-Road Customers
A new fuel card feature for Wex customers offers convenience and security.
Read More →
