[Code of Federal Regulations] [Title 49, Volume 5] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR538.1] [Page 106] TITLE 49--TRANSPORTATION OF TRANSPORTATION PART 538--MANUFACTURING INCENTIVES FOR ALTERNATIVE FUEL VEHICLES--Table of Contents Sec. 538.1 Scope. This part establishes minimum driving range criteria to aid in identifying passenger automobiles that are dual fueled automobiles. It also establishes gallon equivalent measurements for gaseous fuels other than natural gas.