The days when urban life in California involved regular inhalations of diesel smoke from rumbling buses will soon be history after the California Air Resources Board ordered transit agencies to make their fleets entirely emission-free within two decades.
The ruling, handed down by a unanimous vote Friday, is the latest move by California to seize control of its own greenhouse gas emissions as the Trump administration pushes for lower fuel efficiency standards and promotes the oil and gas industries.
The new rules prohibit the purchase of any new gas or diesel-powered public transit buses by 2029 and require all buses to be zero-emission by 2040. It is the first statewide policy in the country to require electrification of an entire public transit fleet.
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