ONTARIO, Calif. — The California Air Resources Board’s Advanced Clean Fleets rule will start requiring manufacturers to sell an increasing percentage of zero emission heavy-duty trucks starting in 2024.

Nine percent of all new commercial trucks sold in California will have to be zero emissions in 2024, followed by percentage increases over time.

Clean transportation company Hexagon Purus is working to decarbonize the trucking industry at their Ontario facility through battery-electric and hydrogen fuel-cell technology.