New Vehicle and Engine Certification: Executive Orders for Compression-Ignition and Heavy-Duty Engines and Vehicles
The New Vehicle and Engine Certification Program is responsible for the certification of new engines, vehicles, powertrains, aerodynamic devices and other new certifications. Vehicles and engines may be sold and otherwise produced in California only if approved by Executive Order (EO) after review by CARB. Executive Orders are issued for on-road and off-road categories.
Scanned copies of issued Executive Orders may be requested via email.
CARB has issued Executive Orders for the following on-road heavy-duty engine and vehicle and off-road compression-ignition engine categories. Additional certification information, summarized in the supplemental EO Summary files, is available for each category.
For questions, please contact Compression Ignition and Heavy-Duty Certification or Help Line at 1-800-242-4450.
| Categories | ||
| MDE / HDE | Medium-Duty and Heavy-Duty Engines | EO Summary |
| MDEV / HDV | Medium-Duty Engine Vehicles and Heavy-Duty Vehicles | EO Summary |
| NSERIES | Federal Compliant Exempted Engines | EO Summary |
| OFCI | Off-Road Compression-Ignition Engines | EO Summary |
| TPEM | OFCI Implementation Flexibility "TPEM" Engines | EO Summary |