[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: 49CFR213.141] [Page 128] TITLE 49--TRANSPORTATION CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 213_TRACK SAFETY STANDARDS--Table of Contents Subpart D_Track Structure Sec. 213.141 Self-guarded frogs. (a) The raised guard on a self-guarded frog shall not be worn more than three-eighths of an inch. (b) If repairs are made to a self-guarded frog without removing it from service, the guarding face shall be restored before rebuilding the point.