49 CFR 213.55 - Track alinement.

§ 213.55 Track alinement.

(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

[ 78 FR 16100, Mar. 13, 2013]

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United States Code
Statutes at Large

Title 49 published on 09-May-2017 04:41

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 49 CFR Part 213 after this date.

  • 2017-04-13; vol. 82 # 70 - Thursday, April 13, 2017
    1. 82 FR 17765 - Implementation of the Federal Civil Penalties Inflation Adjustment Act Improvements Act for a Violation of a Federal Railroad Safety Law, Federal Railroad Administration Safety Regulation or Order, or the Hazardous Material Transportation Laws or Regulations, Orders, Special Permits, and Approvals Issued Under Those Laws
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Railroad Administration
      Final rule.
      This final rule is effective April 13, 2017.
      49 CFR Parts 209, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 270, and 272