Title 49
SECTION 213.323
213.323 Track gage.
§ 213.323 Track 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 - | The change of gage within 31 feet must not be greater than - |
|---|---|---|---|
| Class 6 track | 4′8″ | 4′9 1/4″ | 3/4″ |
| Class 7 track | 4′8″ | 4′9 1/4″ | 1/2″ |
| Class 8 track | 4′8″ | 4′9 1/4″ | 1/2″ |
| Class 9 track | 4′8 1/4″ | 4′9 1/4″ | 1/2″ |