49 C.F.R. § 193.2917 Warning signs.
Title 49 - Transportation
(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]
Title 49: Transportation
PART 193—LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS
Subpart J—Security
§ 193.2917 Warning signs.
