This page last reviewed February 2, 2012.

New Hybrid Requirements for Medium- and Heavy-Duty Vehicles


The AB 32 Scoping Plan recommended several actions for reducing GHG emissions from the transportation sector, including a measure for medium- and heavy-duty vehicle hybridization (Measure T-8). Hybridization of medium- and heavy-duty vehicles would reduce GHG emissions through increased fuel efficiency.  Hybrid trucks would likely achieve the greatest benefits in urban, stop-and-go applications, such as parcel delivery, utility services, transit, and other vocational work trucks.  The Scoping Plan estimates that the sale of these types of new hybrid trucks could achieve 0.5 million metric tons of carbon dioxide emission reductions.  The Scoping Plan identified both regulation and incentive programs as platforms for achieving these emission reductions.

In April 2008, the Board approved the Hybrid Truck and Bus Voucher Incentive Project (HVIP) funded through the AB 118 Air Quality Improvement Program (AQIP).  The HVIP will provide up to $20.4 million in Fiscal Year (FY) 2009-10 AQIP funds for vouchers of $10,000 to $45,000 on a first-come, first-served basis for the purchase of new eligible hybrid trucks or buses. ARB anticipates that up to 800 new hybrid trucks or buses will be funded through this project in Fiscal Year 2009-10 with continued AQIP funding in the upcoming years. 

The HVIP is the first step in achieving the emission reductions needed from Scoping Plan Measure T 8, but it is not sufficient to meet the obligation.  The second step is developing a regulation requiring new trucks in targeted vocations be hybrid vehicles.

Whats New

Posted February 1, 2010

Posted January 12, 2010
  • Public Workshop Notice for Development of New Hybrid Requirements for Medium- and Heavy-Duty Vehicles and Updates to the Interim Certification Procedures for Hybrid-Electric Heavy-Duty Vehicles and Urban Buses

For questions, please contact:

Johanna Levine
Innovative Strategies Branch
MSCD at (916) 324-6971