§ 299.309 - Classes of track: operating speed limits.

§ 299.309 Classes of track: operating speed limits.

(a) Except as provided in paragraph (b) of this section and as otherwise provided in this part, the following maximum allowable operating speeds apply -

Table 1 to Paragraph (a)

Over track that meets all of the requirements prescribed in this part for -	The maximum allowable operating speed in km/h (mph)
Class H0 track	20 (12)
Class H1 track	30 (19)
Class H2 track	70 (44)
Class H3 track	120 (75)
Class H4 track	170 (106)
Class H5 track	230 (143)
Class H6 track	285 (177)
Class H7 track	330 (205)

(b) Except as provided in paragraph (c) of this section, if a segment of track does not meet all of the requirements for its intended Class, it is to be reclassified to the next lower track Class 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 track Class H1 track, operations may continue at Class H1 speeds for a period of not more than 30 days without bringing the track into compliance, under the authority of an individual designated under § 299.353, after that individual determines that operations may safely continue and subject to any limiting conditions specified by such individual.

(c) If a segment of track designated as track Class H0 does not meet all of the requirements for its intended class, operations may continue at Class H0 speeds for a period of not more than 30 days without bringing the track into compliance, under the authority of an individual designated under § 299.353, after that individual determines that operations may safely continue and subject to any limiting conditions specified by such individual.

(d) No high-speed passenger trainset shall operate over track Class H0.