49 CFR Part 213
§ 213.332 — Combined track alinement and surface deviations
FRA Part 213 · Subpart G — Train Operations at Track Classes 6 and Higher. Full current text with cross-references on BuildSpec.
§ 213.332 Combined track alinement and surface deviations. (a) This section applies to any curved track where operations are conducted at a qualified cant deficiency, Eu, greater than 5 inches, and to all Class 9 track, either curved or tangent. (b) For the conditions defined in paragraph (a) of this section, the combination of alinement and surface deviations for the same chord length on the outside rail in a curve and on any of the two rails of a tangent section, as measured by a TGMS, shall comply with the following formula: Where— Am = measured alinement deviation from uniformity (outward…
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