[Code of Federal Regulations] [Title 16, Volume 1] [Revised as of January 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 16CFR309.4] [Page 356] TITLE 16--COMMERCIAL PRACTICES CHAPTER I--FEDERAL TRADE COMMISSION PART 309_LABELING REQUIREMENTS FOR ALTERNATIVE FUELS AND ALTERNATIVE FUELED VEHICLES--Table of Contents Subpart A_General Sec. 309.4 Preemption. Inconsistent state and local regulations are preempted to the extent they would frustrate the purposes of this part.