49 CFR Part 213
§ 213.327 — Track alinement
FRA Part 213 · Subpart G — Train Operations at Track Classes 6 and Higher. Full current text with cross-references on BuildSpec.
§ 213.327 Track alinement. (a) Uniformity at any point along the track is established by averaging the measured mid-chord offset values for nine consecutive points that are centered around that point and spaced according to the following table: Chord length Spacing 31′ 7′9″ 62′ 15′6″ 124′ 31′0″ (b) Except as provided in paragraph (c) of this section, a single alinement deviation from uniformity may not be more than the amount prescribed in the following table: Class of track Tangent/Curved track The deviation from uniformity of the mid-chord offset for a 31-foot chord may not be more…
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