49 C.F.R. § 213.9
(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—
| Over track that meets all of the requirements prescribed in this part for— | The maximum allowable operating speed for freight trains is— | The maximum allowable operating speed for passenger trains is— |
|---|---|---|
| Excepted track | 10 | N/A |
| Class 1 track | 10 | 15 |
| Class 2 track | 25 | 30 |
| Class 3 track | 40 | 60 |
| Class 4 track | 60 | 80 |
| Class 5 track | 80 | 90 |
[63 FR 34029, June 22, 1998, as amended at 85 FR 63388, Oct. 7, 2020]