49 CFR 213.63 - Track surface.

§ 213.63 Track surface.

(a) Except as provided in paragraph (b) of this section, each track owner shall maintain the surface of its track within the limits prescribed in the following table:

Track surface (inches) Class of track
1 2 3 4 5
The runoff in any 31 feet of rail at the end of a raise may not be more than 3 1/2 3 2 1 1/2 1
The deviation from uniform profile on either rail at the mid-ordinate of a 62-foot chord may not be more than 3 2 3/4 2 1/4 2 1 1/4
The deviation from zero crosslevel at any point on tangent or reverse crosslevel elevation on curves may not be more than 3 2 1 3/4 1 1/4 1
The difference in crosslevel between any two points less than 62 feet apart may not be more than * 1 2 3 2 1/4 2 1 3/4 1 1/2
*Where determined by engineering decision prior to June 22, 1998, due to physical restrictions on spiral length and operating practices and experience, the variation in crosslevel on spirals per 31 feet may not be more than 2 1 3/4 1 1/4 1 3/4

1 Except as limited by § 213.57(a), where the elevation at any point in a curve equals or exceeds 6 inches, the difference in crosslevel within 62 feet between that point and a point with greater elevation may not be more than 1 1/2 inches.

2 However, to control harmonics on Class 2 through 5 jointed track with staggered joints, the crosslevel differences shall not exceed 1 1/4 inches in all of six consecutive pairs of joints, as created by seven low joints. Track with joints staggered less than 10 feet apart shall not be considered as having staggered joints. Joints within the seven low joints outside of the regular joint spacing shall not be considered as joints for purposes of this footnote.

(b) For operations at a qualified cant deficiency, Eu, of more than 5 inches, each track owner shall maintain the surface of the curve within the limits prescribed in the following table:

Track surface (inches) Class of track
1 2 3 4 5
The deviation from uniform profile on either rail at the mid-ordinate of a 31-foot chord may not be more than N/A 1 N/A 1 1 1 1
The deviation from uniform profile on either rail at the mid-ordinate of a 62-foot chord may not be more than 2 1/4 2 1/4 1 3/4 1 1/4 1
The difference in crosslevel between any two points less than 10 feet apart (short warp) shall not be more than 2 2 1 3/4 1 3/4 1 1/2

1 N/A - Not Applicable.

[ 78 FR 16101, 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