[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR213.143]

[Page 112-113]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 213--TRACK SAFETY STANDARDS--Table of Contents
 
                       Subpart D--Track Structure
 
Sec. 213.143  Frog guard rails and guard faces; gage.

    The guard check and guard face gages in frogs shall be within the 
limits prescribed in the following table--

----------------------------------------------------------------------------------------------------------------
                                           Guard check gage  The distance
                                          between the gage line of a frog
                                            to the guard line \1\ of its   Guard face gage  The distance between
                                            guard rail or guarding face,    guard lines \1\, measured across the
             Class of track                 measured across the track at     track at right angles to the gage
                                           right angles to the gage line      line \2\, may not be more than--
                                            \2\, may not be less than--

----------------------------------------------------------------------------------------------------------------
Class 1 track...........................  4[foot]6\1/8\.......  4[foot] 5\1/4\
Class 2 track...........................  4[foot]6\1/4\.......  4[foot] 5\1/8\
Class 3 and 4 track.....................  4[foot] 6\3/8\......  4[foot]5\1/8\
Class 5 track...........................  4[foot]6\1/2\.......  4[foot] 5
----------------------------------------------------------------------------------------------------------------
\1\ A line along that side of the flangeway which is nearer to the center of the track and at the same elevation
  as the gage line.
\2\ A line \5/8\ inch below the top of the center line of the head of the running rail, or corresponding
  location of the tread portion of the track structure.


  [GRAPHIC] [TIFF OMITTED] TR22JN98.006
  

[[Page 113]]

[GRAPHIC] [TIFF OMITTED] TR22JN98.007