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CFR > Title 16 - Commercial Practices > CHAPTER I—FEDERAL TRADE COMMISSION > SUBCHAPTER C—REGULATIONS UNDER SPECIFIC ACTS OF CONGRESS (parts 300 to 322) > PART 309—LABELING REQUIREMENTS FOR ALTERNATIVE FUELS AND ALTERNATIVE FUELED VEHICLES > SUBPART A—General (§309.1 to §309.4) > 309.4—Preemption.
309.4—Preemption.
Inconsistent state and local regulations are preempted to the extent they would frustrate the purposes of this part.