[Code of Federal Regulations] [Title 49, Volume 2] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR179.13] [Page 1063] TITLE 49--TRANSPORTATION CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 179_SPECIFICATIONS FOR TANK CARS--Table of Contents Subpart B_General Design Requirements Sec. 179.13 Tank car capacity and gross weight limitation. Tank cars built after November 30, 1970, must not exceed 34,500 gallons capacity or 263,000 pounds gross weight on rail. Existing tank cars may not be converted to exceed 34,500 gallons capacity or 263,000 pounds gross weight on rail. [Amdt. 179-4, 35 FR 14217, Sept. 9, 1970]