49 CFR 172.530 - OXYGEN placard.
(b) In addition to complying with § 172.519 of this subpart, the background color on the OXYGEN placard must be yellow. The symbol, text, class number and inner border must be black.
[Amdt. 172-123, 56 FR 66262, Dec. 20, 1991]
Title 49 published on 2014-10-01
no entries appear in the Federal Register after this date.