Section 172.558 49 CFR Ch. I (10-1-18 Edition) (b) In addition to complying with Section 172.519, the background color on the RADIOACTIVE placard must be white in the lower portion with a yellow triangle in the upper portion. The base of the yellow triangle must be 29 mm Section5 mm (1.1 inches Section0.2 inches) above the placard horizontal center line. The symbol, text, class number and inner border must be black. [Amdt. 172-123, 56 FR 66264, Dec. 20, 1991; Amdt. 172-130, 58 FR 51531, Oct. 1, 1993; 65 FR 58627, Sept. 29, 2000] Section 172.558 CORROSIVE placard. (a) Except for size and color, the CORROSIVE placard must be as follows: VerDate Sep<11>2014 16:41 Oct 31, 2018 Jkt 244226 PO 00000 Frm 00450 Fmt 8010 Sfmt 8010 Q:\49\49V2.TXT PC31 ER29SE00.001 440