49 C.F.R. § 213.9 Classes of track: operating speed limits.
Title 49 - Transportation
(a) Except as provided in paragraph (b) of this section and §§213.57(b), 213.59(a), 213.113(a), and 213.137(b) and (c), the following maximum allowable operating speeds apply— (b) If a segment of track does not meet all of the requirements for its intended class, it is reclassified to the next lowest class of track for which it does meet all of the requirements of this part. However, if the segment of track does not at least meet the requirements for Class 1 track, operations may continue at Class 1 speeds for a period of not more than 30 days without bringing the track into compliance, under the authority of a person designated under §213.7(a), who has at least one year of supervisory experience in railroad track maintenance, after that person determines that operations may safely continue and subject to any limiting conditions specified by such person.
Title 49: Transportation
PART 213—TRACK SAFETY STANDARDS
Subpart A—General
§ 213.9 Classes of track: operating speed limits.
[In miles per hour]------------------------------------------------------------------------ The maximum The maximum Over track that meets all of the allowable allowable requirements prescribed in this operating speed operating speed part for_ for freight for passenger trains is_ trains is_------------------------------------------------------------------------Excepted track.................... 10 N/AClass 1 track..................... 10 15Class 2 track..................... 25 30Class 3 track..................... 40 60Class 4 track..................... 60 80Class 5 track..................... 80 90------------------------------------------------------------------------
