Code of Federal Regulations (Last Updated: April 5, 2024) |
Title 49 - Transportation |
Subtitle B - Other Regulations Relating to Transportation |
Chapter II - Federal Railroad Administration, Department of Transportation |
Part 299 - Texas Central Railroad High-Speed Rail Safety Standards |
Subpart C - Track Safety Standards |
§ 299.313 - Track geometry; performance based.
Latest version.
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§ 299.313 Track geometry; performance based.
(a) For all track of Class H4 and above, vibration in the lateral and vertical directions measured on the carbody of a vehicle representative of the service fleet traveling at a speed no less than 10 km/h (6.2 mph) below the maximum speed permitted for the class of track, shall not exceed the limits prescribed in the following table:
Table 1 to Paragraph (a)
Carbody acceleration limits 1 2 Lateral vibration3 Vertical vibration3 ≤ 0.35 g peak-to-peak ≤ 0.45g peak-to-peak 1 sec window 1 sec window excluding peaks < 50 msec excluding peaks < 50 msec (b) If the carbody acceleration requirements are not met on a segment of track, the segment of track is to be reclassified to the next lower Class of track for which it does meet the requirements of this part.