Title 49: Transportation
PART 213—TRACK SAFETY STANDARDS
Subpart C—Track Geometry
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§ 213.53 Gage.
(a) Gage is measured between the heads of the rails at right-angles to the rails in a plane five-eighths of an inch below the top of the rail head.
(b) Gage shall be within the limits prescribed in the following table—
| Class of track | The gage must be at least— | But not more than— |
|---|
| Excepted track | N/A | 4′10
1/4&inch;. |
| Class 1 track | 4′8&inch; | 4′10&inch;. |
| Class 2 and 3 track | 4′8&inch; | 4′9
3/4&inch;. |
| Class 4 and 5 track | 4′8&inch; | 4′9
1/2&inch;. |
