TRU Compliance Information
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Last updated October 13, 2022.
The public may use the Public Transport Refrigeration Unit (TRU) Search to search the Air Resources Board Equipment Registration (ARBER) system to check the compliance status of TRUs and TRU generator sets. Report noncompliant TRUs to CARB's Complaint Hotline.
- Compliance Schedule
- Compliance Assistance
- TRU Compliance Extensions
- Resources for Carriers, Brokers, Forwarders, Shippers, and Receivers
- Publicly Available Resources for TRU Compliance Checks
Compliance Schedule
In-Use Model Year 2022 and Older TRUs
| TRU Type | Truck TRU | Trailer TRU | Domestic Shipping Container TRU | Railcar TRU | TRU Generator Set |
|---|---|---|---|---|---|
In-Use Performance Standard (ULETRU) (7 years after engine MY) | Yes, if MY 2014 or older | Yes | Yes | Yes | Yes |
Lower Global Warming Refrigerant (12/31/22) | |||||
PM Emission Standard (12/31/22) | |||||
Report to CARB (California-Based: Now Out-of-State-Based: 12/31/23) | Yes | Yes | Yes | Yes | Yes |
TRU Operating Fee (12/31/23) | Yes | Yes | Yes | Yes | Yes |
TRU Compliance Labels (12/31/23) | Yes | Yes | Yes | Yes | Yes |
Zero-Emission Fleet Requirement (12/31/23) | Yes |
New Model Year 2023 and Newer TRUs
| TRU Type | Truck TRU | Trailer TRU | Domestic Shipping Container TRU | Railcar TRU | TRU Generator Set |
|---|---|---|---|---|---|
In-Use Performance Standard (ULETRU) (7 years after engine MY) | |||||
Lower Global Warming Refrigerant (12/31/22) | Yes | Yes | Yes | ||
PM Emission Standard (12/31/22) | Yes | Yes | Yes | Yes | |
Report to CARB (California-Based: Now Out-of-State-Based: 12/31/23) | Yes | Yes | Yes | Yes | Yes |
TRU Operating Fee (12/31/23) | Yes | Yes | Yes | Yes | Yes |
TRU Compliance Labels (12/31/23) | Yes | Yes | Yes | Yes | Yes |
Zero-Emission Fleet Requirement (12/31/23) | Yes |
Zero-Emission Truck TRU Fleet Compliance Schedule
The phase-in schedule for different size truck TRU fleets is shown in the table below. Note that owners should use basic rounding methodology when calculating the required number of zero-emission truck TRUs. If the calculated number of required zero-emission truck TRUs is not equal to a whole number, round up to a whole number when the fractional part is equal to or greater than 0.5, and round down if less than 0.5.
| Compliance Deadline as of December 31 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 |
|---|---|---|---|---|---|---|---|
| Fleet with 1 Truck TRU | 1 | 1 | 1 | 1 | |||
| Fleet with 2 Truck TRUs | 1 | 1 | 1 | 2 | 2 | 2 | |
| Fleet with 3 Truck TRUs | 1 | 1 | 2 | 2 | 3 | 3 | |
| Fleet with 4 Truck TRUs | 1 | 1 | 2 | 2 | 3 | 4 | 4 |
| Fleet with 5 Truck TRUs | 1 | 2 | 2 | 3 | 4 | 5 | 5 |
| Fleet with 6 Truck TRUs | 1 | 2 | 3 | 4 | 5 | 5 | 6 |
| Fleet with 7+ Truck TRUs | 15% | 30% | 45% | 60% | 75% | 90% | 100% |
Compliance Assistance
- Frequently Asked Questions for Compliance with the TRU ATCM (Español) - Frequently Asked Questions (FAQ) document on the TRU ATCM and the 2022 Amendments in a question and answer format.
- The documents below help TRU owners find TRU unit and engine labels and the information on those labels that is needed to apply for a CARB identification number:
- Carrier Transicold Unit and Engine Labels: This provides helpful pictures showing where to look for the Carrier unit labels and Kubota engine labels. It also shows pictures of where to look on the unit label for the unit model, model year, and serial number. There are also pictures showing where to look on the engine label to find the engine manufacturer, model, model year, and serial number. For further assistance, contact a local Carrier Transicold dealer
- Thermo King Unit and Engine Labels: This provides helpful pictures showing where to look for the Thermo King unit labels and Isuzu or Yanmar engine labels. It also shows pictures of where to look on the unit label for the unit model, model year, and serial number. There are also pictures showing where to look on the engine label to find the engine manufacturer, model, model year, and serial number. Thermo King Service Bulletin TT505 provides a look-up table that uses the engine serial number to determine the engine model year of Isuzu engines. For further assistance, contact a local Thermo King dealer.
- Regulatory Guidance for Electric Standby and Hybrid Electric Systems for Alternative Technology Compliance (Español) - Guidance on how electric standby and hybrid electric systems must be used to qualify as an Alternative Technology and the recordkeeping and reporting that is required with this compliance option. Note that use of an Alternative Technology may only be used to comply with the in‑use performance standards that apply to model year 2022 and older non-truck TRU engines.
- ETS Supplier List - Note that this list is not intended to imply CARB endorsement of any kind. Users of this list are advised to use due diligence in evaluating offerings from the companies on this list.
- TRU Verified Diesel Emission Control Strategy (VDECS) Information. Note that installation of a Level 3 VDECS may only be used to comply with the in-use performance standards that apply to model year 2022 and older non-truck TRU engines.
- CARB Retrofit Device Verification Database – available to help end users find a compatible retrofit device that is potentially verified for their TRU engine.
- VDECS Installation/Maintenance Information
- Managing Hazardous Waste from VDECS
- Complaints: Owners that have problems with their VDECS should first contact the installer. The installer should be able to assist with diagnosis and repairs as well as warranty work, if available. If the installer is unable to resolve the problem, contact the manufacturer of the VDECS. Also, contact CARB at (888) 878-2826 or send an email to arber@arb.ca.gov.
Level 3 VDECS (85 percent PM control) - meets ULETRU |
|---|
Carrier Transicold’s Engine Emissions System (EES) |
Carrier Transicold’s Legacy Engine Emissions System (Carrier Legacy EES) |
New World Engineering Electrically Assisted Diesel Particulate Filter (NWE EADPF) |
Rypos DPF/ULETRUTM (To maintain compliance, Rypos ULETRU filters purchased before July 1, 2020 must be modified to prevent removal of the ash cleanout port) |
- Zero-Emission Truck TRU Technologies – List of currently-available zero-emission truck TRU technologies. Note that this list is not intended to imply CARB endorsement of any kind. Users of this list are advised to use due diligence in evaluating offerings from the companies on this list.
TRU Compliance Extensions
Compliance extensions are available if delivery or installation is delayed through no fault of the owner. To qualify, an applicant must demonstrate, with documentation, that they made a good-faith effort to comply by December 31st of the applicable compliance year by ordering compliance equipment early enough to take into account delivery, installation, holiday, and year-end lead times.
Purchase order deadlines apply:
- Replacement engines, units, and vehicles: No later than August 31st of the applicable compliance year
- VDECS Retrofits (diesel particulate filters): No later than October 31st of the applicable compliance year
Note: Earlier orders are recommended because the maximum extension allowed by law is six months.
The compliance extension application (with documentation) deadline is close of business, December 31st of the applicable compliance year.
Resources for Carriers, Brokers, Forwarders, Shipper, and Receivers
- Guidance for Brokers, Forwarders, Shippers, Receivers, Carriers, and Drivers on Hiring and Contracting TRU-Carrier Transport of Perishable Goods on California Highways and Railways (Español) – Guidance on requirements for freight brokers, forwarders, shippers, receivers, carriers, vehicle owners, and drivers.
Publicly Available Resources for TRU Compliance Checks
- Transport Refrigeration Unit Compliance Search Page – look-up the compliance status for a specific TRU.
- 100 Percent Compliant Carrier List Search Page – View/search for companies that are 100 percent compliant with the TRU ATCM based on current information in the ARBER database.