The California Air Resources Board voted unanimously to require that all new buses be carbon-free by 2029, in essence phasing out purchasing any new gas- or diesel-powered buses by 2029 and requiring only zero-emission buses by 2040. The mandate will eventually take an estimated 14,000 gas-powered buses off the roads. California currently has 153 zero-emission buses, most of which are electric, and hundreds more on order. The long lead time on the rule will enable transit agencies to phase out existing buses over their current lifespan of 10-plus years.
