Zero-Emission Regulation Deadline Schedules
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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
ACF: Drayage
| ACF Drayage Model Year Schedule Summary | |
|---|---|
| December 31, 2023 | Registration required for legacy trucks |
| January 1, 2024 | Drayage trucks newly added to drayage truck reporting system must be ZEVs |
| January 1, 2025 | Must annually report mileage for trucks over 12 years |
| January 1, 2035 | All drayage trucks must be ZEVs |
ACF: High Priority and Federal Fleets
| ACF High Priority & Federal Fleets Model Year Schedule Summary | |
|---|---|
| January 1, 2024 | Newly added trucks must be ZEVs or NZEVs |
| February 1, 2024 | Registration required for legacy trucks |
| February 1, 2024 | Must annually report mileage for tractors over 12 years of age old or older starting when fleets are required to begin reporting |
| January 1, 2025 | ICE vehicles removed from fleet after useful life exceeded |
| ACF Optional ZEV Milestone Phase-In | |||||
|---|---|---|---|---|---|
| Percentage of vehicles that must be ZEVs | 10% | 25% | 50% | 75% | 100% |
| Milestone Group 1: Box trucks, vans, buses with two axles, yard tractors, light-duty package delivery vehicles | 2025 | 2028 | 2031 | 2033 | 2035 and beyond |
| Milestone Group 2: Work trucks, day cab tractors, pickup trucks, buses with three axles | 2027 | 2030 | 2033 | 2036 | 2039 and beyond |
| Milestone Group 3: Sleeper cab tractors and specialty vehicles | 2030 | 2033 | 2036 | 2039 | 2042 and beyond |
| Example Model Year Schedule | ||
|---|---|---|
| Please note that this is just an example and may not reflect or be applicable to your fleet | ||
| Legacy Truck | <800,000 miles | >800,000 miles |
| Engine Year | 18 years | 13 years |
| 2010 | 2028 | 2023 |
| 2011 | 2029 | 2024 |
| 2012 | 2030 | 2025 |
| 2013 | 2031 | 2026 |
| 2014 | 2032 | 2027 |
| 2015 | 2033 | 2028 |
| 2016 | 2034 | 2029 |
| 2017 | 2035 | 2030 |
| 2018 | 2036 | 2031 |
| 2019 | 2037 | 2032 |
| 2020 | 2038 | 2033 |
| 2021 | 2039 | 2034 |
| 2022 | 2040 | 2035 |
| 2023 | 2041 | 2036 |
| 2024 | 2042 | 2037 |
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% |