---
kind: "section"
citation: "49 C.F.R. § 213.59"
title: "49"
number: "213.59"
heading: "Elevation of curved track; runoff."
url: "https://uscodex.org/cfr/49/213.59"
---

# §213.59. Elevation of curved track; runoff.

- (a) If a curve is elevated, the full elevation shall be provided throughout the curve, unless physical conditions do not permit. If elevation runoff occurs in a curve, the actual minimum elevation shall be used in computing the maximum allowable posted timetable operating speed for that curve under [§ 213.57(b)](/cfr/49/213.57.md?p=b).
- (b) Elevation runoff shall be at a uniform rate, within the limits of track surface deviation prescribed in [§ 213.63](/cfr/49/213.63.md), and it shall extend at least the full length of the spirals. If physical conditions do not permit a spiral long enough to accommodate the minimum length of runoff, part of the runoff may be on tangent track.

## Notes

### Amendments

[63 FR 34029, June 22, 1998, as amended at 78 FR 16101, Mar. 13, 2013]

### Authority

Authority: 49 U.S.C. 20102-20114 and 20142; 28 U.S.C. 2461 note; and 49 CFR 1.89.

### Source

Source: 63 FR 34029, June 22, 1998, unless otherwise noted.

### Amendments

[63 FR 34029, June 22, 1998, as amended at 78 FR 16101, Mar. 13, 2013]