Zero-Emission Transit Bus Requirement

By 2040, all public transit agencies must transition to 100% zero-emission bus fleets. Zero-emission bus technologies include all-electric or fuel cell electric. Transit agencies must purchase or operate a minimum number of zero-emission buses according to the following schedules:

Large Transit AgencySmall Transit Agency
January 1, 202325% of the total number of new bus purchases in each calendar year must be zero-emission busesNo requirement
January 1, 202650% of the total number of new bus purchases in each calendar year must be zero-emission buses25% of the total number of new bus purchases in each calendar year must be zero-emission buses
January 1, 2029All new bus purchases must be zero-emission busesAll new bus purchases must be zero-emission buses

Each transit agency will submit a plan demonstrating how it will purchase clean buses, develop infrastructure, train personnel, and other required details. Large transit agencies must submit a plan in 2020 and small agencies must submit a plan in 2030. Additional rules and requirements apply.

For more information, including definitions of large and small transit agencies and additional terms and conditions, see the California Air Resources Board’s Innovative Clean Transit website.

(Reference California Code of Regulations Title 13, Section 2023.1)