Pipeline and Haz. Matls. Safety Admin., DOT Section 172.555 POISON INHALATION HAZARD placard. (a) Except for size and color, the POISON INHALATION HAZARD placard must be as follows: [62 FR 39409, July 22, 1997] Section 172.556 RADIOACTIVE placard. (a) Except for size and color, the RADIOACTIVE placard must be as follows: ER22JY97.025 [Amdt. 172-123, 56 FR 66264, Dec. 20, 1991, as amended by Amdt. 172-139, 59 FR 67490, Dec. 29, 1994] (b) In addition to complying with Section 172.519, the background on the POISON INHALATION HAZARD placard and the symbol must be white. The background of the upper diamond must be black and the lower point of the upper diamond must be 65 mm (25-8 inches) above the horizontal center line. The text, class number, and inner border must be black. 439 VerDate Sep<11>2014 16:41 Oct 31, 2018 Jkt 244226 PO 00000 Frm 00449 Fmt 8010 Sfmt 8010 Q:\49\49V2.TXT PC31 EC02MR91.057 (b) In addition to complying with Section 172.519, the background on the POISON placard must be white. The symbol, text, class number and inner border must be black. The word - TOXIC - may be used in lieu of the word - POISON - . Section 172.556