49 CFR § 193.2917 - Warning signs.

---
identifier: "/us/cfr/t49/s193.2917"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 193.2917 - Warning signs."
title_number: 49
title_name: "Transportation"
section_number: "193.2917"
section_name: "Warning signs."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "D"
subchapter_name: "PIPELINE SAFETY"
part_number: "193"
part_name: "LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 5103, 60102, 60103, 60104, 60108, 60109, 60110, 60113, 60118; and 49 CFR 1.53."
regulatory_source: "45 FR 9203, Feb. 11, 1980, unless otherwise noted."
cfr_part: "193"
---


# 193.2917 Warning signs.

(a) Warning signs must be conspicuously placed along each protective enclosure at intervals so that at least one sign is recognizable at night from a distance of 30m (100 ft.) from any way that could reasonably be used to approach the enclosure.

(b) Signs must be marked with at least the following on a background of sharply contrasting color:

The words “NO TRESPASSING,” or words of comparable meaning.

[Amdt. 193-2, 45 FR 70409, Oct. 23, 1980, as amended at 47 FR 32720, July 29, 1982]