supply-side regulation
Why are California’s Zero-Emission Truck Standards Under Attack?
They are highly effective, as CLEE’s new Factsheet series on Zero-Emission Trucks documents.
The world of zero-emission trucks is at a pivotal moment. On one hand, the technology is rapidly advancing, and manufacturers are producing a growing number of zero-emission truck models in Europe, China, and here in California. Yet on the other hand, this clean transition is facing significant political and legal challenges from the U.S. federal …
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CONTINUE READINGSupply-Side Regulations & Clean Vehicles
As Congress votes to undermine California’s sovereignty to set supply-side standards on polluting vehicles, CLEE’s research shows why these policies are so effective
In May 2025, both the U.S. House and Senate passed resolutions to revoke California’s Clean Air Act waivers, which allow the state to enforce stricter vehicle emissions rules than federal standards (see Ann Carlson’s post on this issue). If signed by the President—and if successful in the face of court challenges to their dubious legality—these …
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