On-Road Heavy-Duty GHG Vehicle Certification Program: California Test Procedures ZEP 2021+ Proposed California Standards And Test Procedures For New 2021 And Subsequent Model Heavy-Duty Zero-Emission Powertrains Categorías Topics On-Road Heavy-Duty Vehicles Tipo Information This document contains the requirements necessary for criteria pollutant and greenhouse gas certification of a heavy-duty electric or hydrogen fuel-cell powertrain for sale in California. Related Resources Enhanced Electric and Fuel Cell Vehicle Certification Clean Truck Check — Heavy-Duty Inspection and Maintenance (HD I/M) Regulation: Freight Contractor, Broker, and Applicable Freight Facility Requirements Mobile Source Strategy
