[Code of Federal Regulations] [Title 49, Volume 5] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR393.68] [Page 411] TITLE 49--TRANSPORTATION DEPARTMENT OF TRANSPORTATION PART 393_PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of Contents Subpart E_Fuel Systems Sec. 393.68 Compressed natural gas fuel containers. (a) Applicability. The rules in this section apply to compressed natural gas (CNG) fuel containers used for supplying fuel for the operation of commercial motor vehicles or for the operation of auxiliary equipment installed on, or used in connection with commercial motor vehicles. (b) CNG containers manufactured on or after March 26, 1995. Any motor vehicle manufactured on or after March 26, 1995, and equipped with a CNG fuel tank must meet the CNG container requirements of FMVSS No. 304 (49 CFR 571.304) in effect at the time of manufacture of the vehicle. (c) Labeling. Each CNG fuel container shall be permanently labeled in accordance with the requirements of FMVSS No. 304, S7.4. [70 FR 48053, Aug. 15, 2005]