Heavy-Duty Hybrid Electric Vehicle Certification Procedures

This page last reviewed November 12, 2015


Background

In 2002, the Board adopted California Interim Certification Procedures for 2004 and Subsequent Model Hybrid-Electric Vehicles in the Urban Bus and Heavy-Duty Vehicle Classes (interim procedure). This interim procedure was adopted in conjunction with modifications to the Public Transit Bus Fleet Rule to reflect advances in technology that could not be captured in ARB’s existing heavy-duty certification procedures.


Heavy-Duty Hybrid Electric Vehicle Certification Procedure

Manufacturers must follow ARB's Heavy-Duty Certification Requirements in order to legally sell heavy-duty engines in California. The interim procedure is designed for heavy-duty hybrid-electric vehicle manufacturers seeking voluntary vehicle-based (as opposed to engine-based) certification. The interim procedure is based on a modified version of the Society of Automotive Engineers (SAE) Recommended Practice SAE J2711. This protocol was developed to test the emissions of heavy-duty hybrid-electric vehicles using a chassis dynamometer.  The ARB certification value for a heavy-duty hybrid-electric vehicle is determined through calculations using chassis dynamometer test results and engine certification values for both the hybrid-electric vehicle and a comparable conventional drivetrain vehicle.


In 2014, the Board adopted the amendments to the California Interim Certification Procedures for 2004 and Subsequent Model Hybrid-Electric and Other Hybrid Vehicles, in the Urban Bus and Heavy-Duty Vehicle Classes. The amendments expand the applicability of the certification procedures to allow more vocational vehicles, such as beverage, package, and linen delivery vehicles, to certify. Additionally, the amendments are to clarify and enhance certification requirements, including updates to definitions and test procedures. The amended interim procedures remain voluntary.


What's New


Posted December 9, 2014

The five heavy-duty related regulatory documents, including the amendments to the Heavy-Duty Hybrid-Electric and Other Hybrid Vehicles Certification Procedures, have been approved by Office of Administrative Law. The formal regulatory documents have been posted on the Heavy-Duty GHG Phase 1 2013 webpage.


Posted December 5, 2013: Public hearing announced.

The Air Resources Board will conduct a public hearing on December 12, 2013, in Sacramento, to consider five heavy-duty vehicle related proposals, including adopting the amendments to the Heavy-Duty Hybrid-Electric and Other Hybrid Vehicles Certification Procedures. The public hearing notice and staff report have been posted on the draft proposed regulations web page.

Workshops and Meetings

Date/Time Description Agenda or Hand-outs
March 19, 2013 / 10:00 a.m. March 2013 Working Group Conference Call for Heavy-Duty Hybrid Vehicle Certification Procedures Amendments Invitation
Agenda
Feb. 26, 2013 / 10:00 a.m. February 2013 Working Group Conference Call for Heavy-Duty Hybrid Vehicle Certification Procedures Amendments Invitation
Agenda
Handout
August 30, 2012 2nd Public Workshop for Amendments to the California Interim Certification Procedures for 2004 and Subsequent Model Hybrid-Electric Vehicles in the Urban Bus and Heavy-Duty Vehicle Classes Notice
Presentation
February 3, 2010 1st Public Workshop for Amendments to the California Interim Certification Procedures for 2004 and Subsequent Model Hybrid-Electric Vehicles in the Urban Bus and Heavy-Duty Vehicle Classes Notice
Presentation
Handout

Related Links


For questions, please contact:
Bob Nguyen
Mobile Source Regulatory Development Branch, MSCD
at (916) 327-2939