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:

eCFR graphic er13mr13.008.gif

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.

eCFR graphic er13mr13.009.gif

[78 FR 16102, Mar. 13, 2013]


Tried the LawStack mobile app?

Join thousands and try LawStack mobile for FREE today.

  • Carry the law offline, wherever you go.
  • Download CFR, USC, rules, and state law to your mobile device.