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:[GRAPHIC] [TIFF OMITTED] TR13MR13.008 Where--Am = measured alinement deviation from uniformity (outward is
positive, inward is negative).AL = allowable alinement limit as per Sec. 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 Sec. 213.63(b) (always
positive) for the class of track.
[GRAPHIC] [TIFF OMITTED] TR13MR13.009
[78 FR 16102, Mar. 13, 2013]