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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 49 - Transportation |
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Subtitle B - Other Regulations Relating to Transportation |
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Chapter II - Federal Railroad Administration, Department of Transportation |
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Part 213 - Track Safety Standards |
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Subpart G - Train Operations at Track Classes 6 and Higher |
§ 213.331 - Track surface.
Latest version.
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§ 213.331 Track surface.
(a) For a single deviation in track surface, each track owner shall maintain the surface of its track within the limits prescribed in the following table:
Track surface (inches) Class of track 6 7 8 9 The deviation from uniform1 profile on either rail at the mid-ordinate of a 31-foot chord may not be more than 1 1 3⁄4 1⁄2 The deviation from uniform profile on either rail at the mid-ordinate of a 62-foot chord may not be more than 1 1 1 3⁄4 Except as provided in paragraph (b) of this section, the deviation from uniform profile on either rail at the mid-ordinate of a 124-foot chord may not be more than 13⁄4 11⁄2 11⁄4 1 The deviation from zero crosslevel at any point on tangent track may not be more than2 1 1 1 1 Reverse elevation on curves may not be more than 1⁄2 1⁄2 1⁄2 1⁄2 The difference in crosslevel between any two points less than 62 feet apart may not be more than3 11⁄2 11⁄2 11⁄4 1 On curved track, the difference in crosslevel between any two points less than 10 feet apart (short warp) may not be more than 11⁄4 11⁄8 1 3⁄4 (b) For operations at a qualified cant deficiency, Eu, of more than 5 inches, a single deviation in track surface shall be within the limits prescribed in the following table:
Track surface (inches) Class of track 6 7 8 9 The difference in crosslevel between any two points less than 10 feet apart (short warp) may not be more than 11⁄4 1 11 3⁄4 The deviation from uniform profile on either rail at the mid-ordinate of a 124-foot chord may not be more than 11⁄2 11⁄4 11⁄4 1 (c) For three or more non-overlapping deviations in track surface occurring within a distance equal to five times the specified chord length, each of which exceeds the limits in the following table, each track owner shall maintain the surface of the track within the limits prescribed for each deviation:
Track surface (inches) Class of track 6 7 8 9 The deviation from uniform profile on either rail at the mid-ordinate of a 31-foot chord may not be more than 3⁄4 3⁄4 1⁄2 3⁄8 The deviation from uniform profile on either rail at the mid-ordinate of a 62-foot chord may not be more than 3⁄4 3⁄4 3⁄4 1⁄2 The deviation from uniform profile on either rail at the mid-ordinate of a 124-foot chord may not be more than 11⁄4 1 7⁄8 5⁄8 [78 FR 16106, Mar. 13, 2013]