Witness explains Advanced Clean Cars 2, California waiver and how Vermont would implement ZEV requirements

Feb 12, 2025

A NESCAUM policy adviser briefed the committee on the statutory basis for states to adopt California vehicle standards, the structure of Advanced Clean Cars 2 (ACC2), compliance flexibilities for automakers, and Vermont's planned 2026 model‑year implementation.

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A senior policy adviser for the Northeast States for Coordinated Air Use Management (NESCAUM) told the House Transportation Committee on Feb. 12 that Advanced Clean Cars 2 (ACC2) and related zero‑emission vehicle (ZEV) rules are authorized by the Clean Air Act’s carve‑out for California and section 177, which allows other states to adopt California’s standards if they are identical.

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