Fireside chat: Where the sidewalk ends, the off-road begins. Why off-road emissions matter and how California is advancing technology in the off-road space.
21 Aug 2025
Room 1
Off-Highway Evolution Summit - day 2
Per Governor Newsom’s Executive Order N-79-20, Assembly Bill 32 and Senate Bill 32, California is heading rapidly toward a zero-emissions landscape and cleaner air. Mr Diener will provide an overview of the California Air Resources Board’s existing and planned off-road zero-emissions programs. These include the Clean Off-Road Equipment Voucher Incentive Project (CORE), advanced technology off-road demonstrations, Tier 5 Off-Road Compression Ignition Engine standards, and the upcoming Phased Advanced Clean Equipment Rule. Also discussed will be some interesting examples of deployments of zero-emission off-road equipment as well as a voluntary California Clean Construction program under development.
- As on-road emission standards have advanced, the relative contribution of off-road emissions in California have increased, with an outsized impact on low-income and disadvantaged communities
- Off-road zero-emission equipment provides a way to cut both criteria and greenhouse gas emissions, often while providing savings on fuel and maintenance
- Advancements in cleaner off-road engines have progressed and California is pursuing standards accordingly
- California has ambitious greenhouse gas reduction targets and an executive order that are rapidly pushing the State to zero emissions.
- California is offering numerous carrots and sticks to encourage the transformation to zero-emission technology, including funding demonstrations, providing incentive funding, facilitating infrastructure expansion and implementing regulations