49 C.F.R. § 229.11 Locomotive identification.
Title 49 - Transportation
(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.
Title 49: Transportation
PART 229—RAILROAD LOCOMOTIVE SAFETY STANDARDS
Subpart A—General
§ 229.11 Locomotive identification.
