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Code of Federal Regulations Title 49. Transportation § 49.213.55 Track alinement

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) Except as provided in paragraph (b) of this section, alinement may not deviate from uniformity more than the amount prescribed in the following table:

Class of track

Tangent track

Curved track

The deviation of the mid-offset from a 62-foot line 1 may not be more than—(inches)

The deviation of the mid-ordinate from a 31-foot chord 2 may not be more than—(inches)

The deviation of the mid-ordinate from a 62-foot chord 2 may not be more than—(inches)

Class 1 track

5

3 N/A

5

Class 2 track

3

3 N/A

3

Class 3 track

1 3/4

1 1/4

1 3/4

Class 4 track

1 1/2

1

1 1/2

Class 5 track

3/4

1/2

5/8

1 The ends of the line shall be at points on the gage side of the line rail, five-eighths of an inch below the top of the railhead. Either rail may be used as the line rail; however, the same rail shall be used for the full length of that tangential segment of the track.

2 The ends of the chord shall be at points on the gage side of the outer rail, five-eighths of an inch below the top of the railhead.

3 N/A—Not Applicable

(b) For operations at a qualified cant deficiency, Eu, of more than 5 inches, the alinement of the outside rail of the curve may not deviate from uniformity more than the amount prescribed in the following table:

Class of track

Curved track

The deviation of the mid-ordinate from a 31-foot chord 1 may not be more than—(inches)

The deviation of the mid-ordinate from a 62-foot chord 1 may not be more than—(inches)

Class 1 track 2

3 N/A

1 1/4

Class 2 track 2

3 N/A

1 1/4

Class 3 track

3/4

1 1/4

Class 4 track

3/4

7/8

Class 5 track

1/2

5/8

1 The ends of the chord shall be at points on the gage side of the outer rail, five-eighths of an inch below the top of the railhead.

2 Restraining rails or other systems may be required for derailment prevention.

3 N/A—Not Applicable

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Cite this article: FindLaw.com - Code of Federal Regulations Title 49. Transportation § 49.213.55 Track alinement - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-49-transportation/cfr-sect-49-213-55/

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