Current as of October 03, 2022 | Updated by FindLaw Staff
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If the values listed in the following table are exceeded, the railroad shall initiate remedial action. A reduction in operating speed so that the condition complies with the limits listed for a lower speed shall constitute bringing the track into compliance.
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Table 1 to § 299.311 |
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|---|---|---|---|---|---|---|---|---|---|
|
Track geometry parameter (millimeter (mm)) |
Track class |
H0 |
H1 |
H2 |
H3 |
H4 |
H5 |
H6 |
H7 |
|
Gauge is measured between the heads of the rails at right angles to the rails in a plane 14 mm (0.55 inches) below the top of the rail head and may not exceed— |
Min. |
1429 |
1429 |
1429 |
1429 |
1429 |
1429 |
1429 |
1429 |
|
Max. |
1454 |
1454 |
1454 |
1454 |
1454 |
1454 |
1454 |
1454 |
|
|
The deviation from uniformity 1 of the mid-chord offset on either rail for a 10 meter (m) chord (alignment) may not be more than— |
10 m chord |
38 |
31 |
31 |
14 |
12 |
10 |
8 |
7 |
|
The deviation from uniform profile on either rail at the mid-ordinate of a 10 m chord (surface) may not be more than— |
10 m chord |
40 |
40 |
40 |
27 |
22 |
18 |
15 |
13 |
|
The deviation from uniform crosslevel at any point on tangent and curved track may not be more than— |
50 |
26 |
26 |
22 |
18 |
14 |
9 |
9 |
|
|
The difference in crosslevel between any two points 2.5 meters (8.2 feet) apart (twist) may not be more than— |
2.5 m |
26 |
26 |
26 |
22 |
18 |
14 |
9 |
9 |
1 Uniformity for alignment at any point along the track is established by averaging the measured mid-chord offset values for a 10 m (32.8 feet) chord for nine consecutive points that are centered around that point and spaced at 2.5 m (8.2 feet) intervals.
Cite this article: FindLaw.com - Code of Federal Regulations Title 49. Transportation § 49.299.311 Track geometry; general - last updated October 03, 2022 | https://codes.findlaw.com/cfr/title-49-transportation/cfr-sect-49-299-311/
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