Frog guard rails and guard faces; gauge.

  1. Law
  2. CFR 49
  3. Transportation
  4. Other Regulations Relating to Transportation
  5. Federal Railroad Administration, Department of Transportation
  6. Texas Central Railroad High-Speed Rail Safety Standards
  7. Track Safety Standards
  8. Frog guard rails and guard faces; gauge.

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§ 299.333 Frog guard rails and guard faces; gauge.

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

Expand Table

Table 1 to § 299.333

Track class Guard check gage
The distance between the gauge line of a frog to the guard line1 of its guard rail or guarding face, measured across the track at right
angles to the gauge line,2 may not be less than - 		Guard face gage
The distance between the guard lines,1
measured across the track at right angles to the gauge line,2 may not be more than -
H0-H7 1,393 mm 1,358 mm.

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 14 mm (0.55 inches) 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.


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