49 C.F.R. § 172.532Download PDFCurrent through May 31, 2024Section 172.532 - FLAMMABLE GAS placard(a) Except for size and color, the FLAMMABLE GAS placard must be as follows: View or download PDF(b) In addition to complying with §172.519, the background color on the FLAMMABLE GAS placard must be red. The symbol, text, class number and inner border must be white. 49 C.F.R. §172.532 Amdt. 172-123, 56 FR 66262, 12/20/1991