213.65 Combined track alinement and surface deviations.
§ 213.65 Combined track alinement and surface deviations.
On any curved track where operations are conducted at a
qualified cant deficiency, Eu, greater than 5 inches, the
combination of alinement and surface deviations for the same chord
length on the outside rail in the curve, as measured by a TGMS,
shall comply with the following formula:
Where -
Am = measured alinement deviation from uniformity (outward is
positive, inward is negative). AL = allowable alinement limit as
per § 213.55(b) (always positive) for the class of track. Sm =
measured profile deviation from uniformity (down is positive, up is
negative). SL = allowable profile limit as per § 213.63(b) (always
positive) for the class of track. [78 FR 16102, Mar.
13, 2013]