42 U.S.C. § 7584 — Administration and enforcement as per California standards

Where the numerical clean-fuel vehicle standards that apply under this part to vehicles of 8,500 lbs. GVWR or less match the numerical standards California applies under its Low-Emission Vehicle and Clean Fuels Regulations ("CARB"), the Administrator must administer and enforce those standards: (1) the same way, and with the same flexibility, that California administers and enforces its matching standards; and (2) under the same requirements, interpretations, and policy judgments California uses — including certification, production-line testing, and in-use compliance requirements — unless the Administrator decides, when writing the clean-fuel vehicle program rules, that doing so wouldn't meet the criteria for a waiver under section 7543. This section does not apply to the heavy-duty vehicle standards in section 7585.