Clean Truck Check (CTC) is a regulation to test heavy-duty vehicles’ emissions control systems for proper operation. Clean Truck Check applies to nearly all diesel and alternative fuel heavy-duty vehicles with a gross vehicle weight rating (GVWR) over 14,000 pounds that operate on California public roads and highways even if they are not registered in California. Read more on regulations and program requirements at the CTC overview site.
Tracker Requirements for OBD Testing
T3 now supports CARB Clean Truck Check (CTC) testing with a new CARB-certified telematics device. Vehicles must have a compatible, CARB-certified tracker installed to complete remote testing through T3.
Contact Support to confirm vehicle eligibility and get the appropriate tracker for CARB testing.
Enrolling Vehicles in T3
This step will walk you through downloading two files from CTC-VIS to upload to T3 so the system can automatically assign them test dates, VIN, and license plate numbers if required.
Note: Your vehicles must first be registered in CTC-VIS.
Step 1. Download the Vehicle & Test Data from the CTC-VIS Portal
Log in to the CTC-VIS portal and navigate to My Entity.
Expand the Vehicles table and open the Actions menu. Click Export - Excel.
Expand the Test Details table and open the Actions menu. Click Export - Excel.
Download the two files to be uploaded in the next step.
Step 2. Uploading the Files to T3
Open the T3 Fleet web app and log in.
Navigate to the Company page and click the CARB tab.
Select Add Test Vehicles > Import with Excel template.
Drag and drop the files you downloaded from CTC-VIS into the window that pops up.
Upload the file you exported in the Vehicles section to the Vehicles.xlsx box.
Upload the file you exported in the Test Details section to the TestDetails.xlsx box.
The files you download from CTC-VIS may be named differently from what is shown.
Note: Your vehicles in T3 and registered in CTC-VIS must have a matching VIN.
The uploader will check to see how many of the vehicles in the excel files have matching VIN to vehicles in T3.
If any vehicles are not already in T3 or have incorrect VINs, their VINs will be displayed in the window.
Any assets that do not have VIN matches must be updated in T3 before enrolling them for the CARB test. For more information, see Editing an Asset in T3.
If any vehicles are missing information (such as license plate), the uploader will flag those items, and you will be able to add that missing data in the next step.
Select the Add Vehicle button to continue.
Managing CARB Testing in T3
The main CTC Testing table shows you which assets you have enrolled, and if they are ready to progress with a test. To run a test, vehicles must have:
VIN
License Plate & State
A CARB certified tracker
A test due date scheduled
The VIN, License Plate & State, and test scheduling can be edited from this table.
To add a VIN or License plate to an asset that is missing that data, hover over the orange “Missing Info” box, and click the pencil.
Enter the corrected details.
Scheduling a test
If you uploaded the Test Details file from CTC-VIS, your test due dates should have auto populated. If you need to change the test schedule or manually added the vehicle you can set a new test due date.
To schedule a single asset, click the date field in the column Test Due Date.
To schedule multiple assets, click the check boxes on the left of the table and then click the blue Schedule Tests button. The button will only become active if all assets have all required info.
This will open the Select your test due date window.
Using the calendar, select the date that you need your tests completed by. This can be found in CTC-VIS.
Enter a testing window (defaults to 90 days). This is the time range before the test to complete the test. CARB allows tests to be submitted up to 90 days before the test is due.
Enter your testing frequency.
Once a year tests are due at the same time each year.
Semi-Annual tests are due twice a year
Quarterly tests are due four times a year
Select Schedule to save the options.
Your tests will automatically run before the selected due by date.
Reviewing Test statuses
The Test Status column describes the state of the upcoming test due date. Hovering over the status will give more information returned from the test.
Test Status | Definition |
Missing Data: VIN, License Plate | The vehicle does not have enough information to start testing. Edit this information in the table to perform a test. |
Uncertified Tracker or No Tracker | The vehicle does not currently have a CARB certified tracker. Contact support to get outfitted with the correct trackers. |
Upcoming Test | The vehicle is prepared for testing and is awaiting the testing window. |
Running | The test is in progress and / or test results are being processed by CARB and is awaiting results |
Error | Something went wrong with testing. |
Passed MM/DD/YYYY | CARB returned a passing test result. Check CTC-VIS for additional details and the vehicle’s overall compliance status. |
Failed MM/DD/YYYY | CARB returned a fail result, and the vehicle may require maintenance and / or retesting. Check CTC-VIS for additional details. |
Adding Additional Vehicles
You can enroll more vehicles in CARB testing at any time, using one of the following methods from the Add Test Vehicles option.
Method 1: Import with Excel template: go through the same upload process as outlined in Enrolling vehicles in T3 above. This can be used to update data from CTC-VIS on existing vehicles or for registering new fleet.
Method 2: Add vehicles from T3: Manually select vehicles to be added to the CARB table that you have added to T3 already.
Adding vehicles from T3
Selecting the Add Test Vehicles > Add vehicle(s) from T3 option will open a table that shows all assets currently in T3. This table can be filtered by a predefined group, or by vehicles that are already installed with a certified tracker. Vehicles can also be searched by name.
Select the check box for any vehicles that need carb testing and click the Add Vehicles button on the bottom right. You will be brought back to the main CTC table with those vehicles now added.
