[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: 49CFR213.115] [Page 121] TITLE 49--TRANSPORTATION CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 213_TRACK SAFETY STANDARDS--Table of Contents Subpart D_Track Structure Sec. 213.115 Rail end mismatch. Any mismatch of rails at joints may not be more than that prescribed by the following table-- ------------------------------------------------------------------------ Any mismatch of rails at joints may not be more than the following-- ------------------------------------- Class of track On the tread of On the gage side the rail ends of the rail ends (inch) (inch) ------------------------------------------------------------------------ Class 1 track..................... \1/4\ \1/4\ Class 2 track..................... \1/4\ \3/16\ Class 3 track..................... \3/16\ \3/16\ Class 4 and 5 track............... \1/8\ \1/8\ ------------------------------------------------------------------------