---
kind: "section"
citation: "49 C.F.R. § 222.47"
title: "49"
number: "222.47"
heading: "What periodic updates are required?"
url: "https://uscodex.org/cfr/49/222.47"
---

# §222.47. What periodic updates are required?

- (a) **Quiet zones with SSMs at each public crossing.** This [paragraph (a)](#a) addresses quiet zones established pursuant to §§ [222.39(a)(1)](/cfr/49/222.39.md?p=a-1) and [222.41(a)(1)(i)](/cfr/49/222.41.md?p=a-1-i) and [(b)(1)(i)](/cfr/49/222.41.md?p=b-1-i) (quiet zones with an SSM implemented at every public crossing within the quiet zone) of this part. Between 4 1/2 and 5 years after the date of the quiet zone establishment notice provided by the public authority under [§ 222.43](/cfr/49/222.43.md), and between 4 1/2 and 5 years after the last affirmation under this section, the public authority must:
  - (1) Electronically affirm in writing to FRA's Grade Crossing and Trespasser Outreach Division that the SSMs implemented within the quiet zone continue to conform to the requirements of appendix A of this part. Copies of such affirmation must be provided to the parties identified in [§ 222.43(a)(3)](/cfr/49/222.43.md?p=a-3); and
  - (2) Electronically provide to FRA's Grade Crossing and Trespasser Outreach Division an up-to-date, accurate, and complete Grade Crossing Inventory Form for each public highway-rail grade crossing, private highway-rail grade crossing, and pedestrian crossing within the quiet zone.
- (b) **Quiet zones which do not have a supplementary safety measure at each public crossing.** This [paragraph (b)](#b) addresses quiet zones established pursuant to §§ [222.39(a)(2)](/cfr/49/222.39.md?p=a-2) and [(a)(3)](/cfr/49/222.39.md?p=a-3), [222.39(b)](/cfr/49/222.39.md?p=b), [222.41(a)(1)(ii)](/cfr/49/222.41.md?p=a-1-ii), [(a)(1)(iii)](/cfr/49/222.41.md?p=a-1-iii), and [(a)(1)(iv)](/cfr/49/222.41.md?p=a-1-iv), and [222.41(b)(1)(ii)](/cfr/49/222.41.md?p=b-1-ii), [(b)(1)(iii)](/cfr/49/222.41.md?p=b-1-iii), and [(b)(1)(iv)](/cfr/49/222.41.md?p=b-1-iv) (quiet zones which do not have an SSM at every public crossing within the quiet zone). Between 2 1/2 and 3 years after the date of the quiet zone establishment notice provided by the public authority under [§ 222.43](/cfr/49/222.43.md), and between 2 1/2 and 3 years after the last affirmation under this section, the public authority must:
  - (1) Electronically affirm in writing to FRA's Grade Crossing and Trespasser Outreach Division that all SSMs and ASMs implemented within the quiet zone continue to conform to the requirements of appendices A and B of this part or the terms of the Quiet Zone approval. Copies of such notification must be provided to the parties identified in [§ 222.43(a)(3)](/cfr/49/222.43.md?p=a-3); and
  - (2) Electronically provide to FRA's Grade Crossing and Trespasser Outreach Division an up-to-date, accurate, and complete Grade Crossing Inventory Form for each public highway-rail grade crossing, private highway-rail grade crossing, and pedestrian grade crossing within the quiet zone.

## Notes

### Amendments

[90 FR 28152, July 1, 2025]

### Authority

Authority: 49 U.S.C. 20103, 20107, 20153, 21301, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

### Source

Source: 71 FR 47634, Aug. 17, 2006, unless otherwise noted.

### Amendments

[90 FR 28152, July 1, 2025]