Zero-Emission Regulation Deadline Schedules | TruckStop
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Below is a collection of zero-emission regulation deadline tables, for long-term at-a-glance or printing convenience. Please note that the content presented on this page is not meant to be a comprehensive description of regulatory requirements. Some tables may only show dates for specific options or sub-categories of a regulation, and therefore important regulation information may be excluded from this page.
It is highly recommended that you review the official program page and its available resources for each regulation, as the following information may be truncated for readability. To view a summary of the regulations listed on this page as well as links to more information such as factsheets and program pages, please click the name(s) of the regulation(s) below.
Innovative Clean Transit
| Zero-Emission Bus Purchase Schedule (ZEB % of Total New Bus Purchase) | ||
|---|---|---|
| Calendar Year | Large Transit | Small Transit |
| 2023-2025 | 25% | - |
| 2026-2028 | 50% | 25% |
| 2029+ | 100% | 100% |
Zero-Emission Airport Shuttle Regulation
| Zero-Emission Airport Fleet Percentage Requirement | |
|---|---|
| Year | Fleet Percentage |
| 2028 | 33% |
| 2036 | 100% |
Advanced Clean Trucks Regulation
| Manufacturer Zero-Emission Sales Percentage Requirement | |||
|---|---|---|---|
| Model Year | Class 2b-3 | Class 4-8 | Class 7-8 |
| 2024 | 5% | 9% | 5% |
| 2025 | 7% | 11% | 7% |
| 2026 | 10% | 13% | 10% |
| 2027 | 15% | 20% | 15% |
| 2028 | 20% | 30% | 20% |
| 2029 | 25% | 40% | 25% |
| 2030 | 30% | 50% | 30% |
| 2031 | 35% | 55% | 35% |
| 2032 | 40% | 60% | 40% |
| 2033 | 45% | 65% | 40% |
| 2034 | 50% | 70% | 40% |
| 2035 | 55% | 75% | 40% |
Advanced Clean Fleets Regulation
Amendments to the ACF regulation were recently adopted which would repeal parts of the regulation applying to federal or private fleets, including requirements for drayage trucks. The amendments are expected to be effective before January 2027.
The state and local government fleets portion of ACF would remain, subject to amendments under AB 1594, which preserve CARB's authority to provide added flexibility for most public agency utilities. Consistent with its mission to reduce air pollution and protect public health, CARB encourages all to continue reducing emissions and we look forward to partnering with you in these efforts.
ACF: State & Local Government
| ACF State & Local Governments Model Year Schedule Summary | |
|---|---|
| 2024-2026 | 50% of purchases must be ZEV or near-zero emission vehicles (NZEV) |
| January 1, 2027 | All purchases must be ZEV or NZEV |
| Optional ZEV Milestone Phase-In | |||||
|---|---|---|---|---|---|
| Zero-Emission Fleet Percentage | 10% | 25% | 50% | 75% | 100% |
| Group 1: Box trucks, vans, 2-axle buses, yard trucks, light-duty package delivery vehicles | 2025 | 2028 | 2031 | 2033 | 2035 |
| Group 2: Work trucks, day cab tractors, 3-axle buses | 2027 | 2030 | 2033 | 2036 | 2039 |
| Group 3: Sleeper cab tractors and specialty vehicles | 2030 | 2033 | 2036 | 2039 | 2042 |
Zero-Emission Powertrain Certification Regulation
| Zero-Emission Powertrain Certification Requirement | |
|---|---|
| Year | Regulation |
| 2024 | Advanced Clean Trucks Regulation |
| 2026 | Zero-Emission Airport Shuttle Regulation |
Zero-Emission Transport Refrigeration Unit (TRU) Regulation
| Phase-in Compliance Schedule for Zero-Emission Truck TRU Fleet Requirement | |||||||
|---|---|---|---|---|---|---|---|
| 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 | 6 | 6 |
| Fleet with 7 Truck TRUs | 15% | 30% | 45% | 60% | 75% | 90% | 100% |