[Code of Federal Regulations]

[Title 49, Volume 4]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR213.137]



[Page 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. 213.137  Frogs.



    (a) The flangeway depth measured from a plane across the wheel-

bearing area of a frog on Class 1 track shall not be less than 1\3/8\ 

inches, or less than 1\1/2\ inches on Classes 2 through 5 track.

    (b) If a frog point is chipped, broken, or worn more than five-

eighths inch down and 6 inches back, operating speed over the frog shall 

not be more than 10 m.p.h.

    (c) If the tread portion of a frog casting is worn down more than 

three-eighths inch below the original contour, operating speed over that 

frog shall not be more than 10 m.p.h.

    (d) Where frogs are designed as flange-bearing, flangeway depth may 

be less than that shown for Class 1 if operated at Class 1 speeds.