[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: 49CFR213.139]

[Page 112]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 213--TRACK SAFETY STANDARDS--Table of Contents
 
                       Subpart D--Track Structure
 
Sec. 213.139  Spring rail frogs.

    (a) The outer edge of a wheel tread shall not contact the gage side 
of a spring wing rail.
    (b) The toe of each wing rail shall be solidly tamped and fully and 
tightly bolted.
    (c) Each frog with a bolt hole defect or head-web separation shall 
be replaced.
    (d) Each spring shall have compression sufficient to hold the wing 
rail against the point rail.
    (e) The clearance between the holddown housing and the horn shall 
not be more than one-fourth of an inch.