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Title 49

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Displaying title 49, up to date as of 10/08/2026. Title 49 was last amended 10/05/2026.
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  1. Title 49 —Transportation
  2. Subtitle B —Other Regulations Relating to Transportation
  3. Chapter II —Federal Railroad Administration, Department of Transportation
  4. Part 213 —Track Safety Standards
  5. Subpart C —Track Geometry
  6. § 213.65
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eCFR Content

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§ 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]

eCFR Content