---
kind: "section"
citation: "33 C.F.R. § 118.55"
title: "33"
number: "118.55"
heading: "Periods of operation."
url: "https://uscodex.org/cfr/33/118.55"
---

# §118.55. Periods of operation.

- (a) Lights shall be displayed from sunset to sunrise and at other times when the visibility is less than one mile.
- (b) Operators shall not be required to exhibit the prescribed lights during seasons when vessels are unable to navigate in the vicinity of the bridge.
- (c) The operation of signals other than lights shall be as prescribed by the District Commander. Each case shall be considered individually.

## Notes

### Authority

Authority: 33 U.S.C. 494; 14 U.S.C. 503, 544; DHS Security Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 75-046, 40 FR 24898, June 11, 1975, unless otherwise noted.