49 CFR § 213.355
Frog guard rails and guard faces; gage
November 18, 2020
The guard check and guard face gages in frogs shall be within the limits prescribed in the following table—
Open Table
| Class of track | Guard check gage | Guard face gage |
|---|---|---|
| The distance between the gage line of a frog to the guard line1 of its guard rail or guarding face, measured across the track at right angles to the gage line,2 may not be less than— | The distance between guard lines,1 measured across the track at right angles to the gage line,2 may not be more than— | |
| Class 6, 7, 8 and 9 track | 4′61⁄2 ″ | 4′5″ |
1A 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.
2A line five-eighths of an 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.
[78 FR 16112, Mar. 13, 2013]
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