California Code of Regulations
Title 13 - Motor Vehicles
Division 3 - Air Resources Board
Chapter 1 - Motor Vehicle Pollution Control Devices
Article 2 - Approval of Motor Vehicle Pollution Control Devices (New Vehicles)
Section 1963.1 - Advanced Clean Trucks Deficits
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
Basic Requirement. Beginning with the applicable effective dates, a manufacturer must comply with the following requirements:
(a) Deficit Generation. Starting with the 2024 model year, a manufacturer shall annually incur deficits based on the manufacturer's annual sales volume of on-road vehicles produced and delivered for sale in California. Deficits are incurred when the on-road vehicle is sold to the ultimate purchaser in California.
(b) Deficit Calculation. Deficits shall be calculated each model year. For each on-road vehicle, the deficit is calculated as the product of the model year percentage requirement from Table A-1, and the appropriate weight class modifier for each vehicle from Table A-2. Every model year, the deficits generated by each vehicle are summed for each vehicle group.
Table A-1. ZEV Sales Percentage Schedule
| Model Year | Class 2b-3 Group | Class 4-8 Group | Class 7-8 Tractors Group |
| 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 and beyond | 55% | 75% | 40% |
Table A-2. Weight Class Modifiers
| Vehicles in the Class 2b-3 | Class 4-5 Vehicles in the Class 4-8 Group | Class 6-7 Vehicles in the Class 4-8 Group | Class 8 Vehicles in the Class 4-8 Group | Vehicles in the Class 7 and 8 Tractor Group | |
| Weight Class Modifier | 0.8 | 1 | 1.5 | 2 | 2.5 |
(c) Deficit Rounding. If the sum of deficits generated in a model year for a vehicle group is not equal to a whole number, the sum of deficits shall round up to the nearest tenth when the fractional part is equal to or greater than 0.05, and round down to the nearest tenth if less than 0.05.
(d) Deficit Accounting. Deficits generated from vehicles in the Class 7-8 tractor group must be accounted separate from other deficits.
1. New section filed 3-15-2021; operative 3-15-2021 pursuant to Government Code section 11343.4(b)(3) (Register 2021, No. 12). Transmission deadline specified in Government Code section 11346.4(b) extended 60 calendar days pursuant to Executive Order N-40-20 and an additional 60 calendar days pursuant to Executive Order N-71-20.
Note: Authority cited: Sections 38501, 38510, 38560, 38566, 39500, 39600, 39601, 39650, 39658, 39659, 39666, 39667, 43013, 43018, 43100, 43101, 43102 and 43104, Health and Safety Code. Reference: Sections 38501, 38505, 38510, 38560, 38580, 39000, 39003, 39650, 39655, 43000, 43000.5, 43013, 43016, 43018, 43100, 43101, 43102, 43104, 43105, 43106, 43205 and 43205.5, Health and Safety Code.
