[Code of Federal Regulations] [Title 49, Volume 4] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR229.11] [Page 425] TITLE 49--TRANSPORTATION CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 229_RAILROAD LOCOMOTIVE SAFETY STANDARDS--Table of Contents Subpart A_General Sec. 229.11 Locomotive identification. (a) The letter ``F'' shall be legibly shown on each side of every locomotive near the end which for identification purposes will be known as the front end. (b) The locomotive number shall be displayed in clearly legible numbers on each side of each locomotive.