---
kind: "section"
citation: "49 C.F.R. § 213.143"
title: "49"
number: "213.143"
heading: "Frog guard rails and guard faces; gage."
url: "https://uscodex.org/cfr/49/213.143"
---

# §213.143. Frog guard rails and guard faces; gage.

- (a) The guard check and guard face gages in frogs shall be within the following limits—
- (b) For any heavy-point frog (HPF) on Class 5 track, the guard check gage may be less than 4′6 1/2″ but not be less than 4′6 3/8″, provided that:
  - (1) Each HPF and guard rails on both rails through the turnout are equipped with at least three serviceable through-gage plates with elastic rail fasteners and guard rail braces that permit adjustment of the guard check gage without removing spikes or other fasteners from the crossties; and
  - (2) Each HPF bears an identifying mark applied by either the track owner, railroad, or the frog manufacturer that identifies the frog as an HPF.

## Notes

### Amendments

[85 FR 63388, Oct. 7, 2020]

### 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

[85 FR 63388, Oct. 7, 2020]