Pipeline and Haz. Matls. Safety Admin., DOT Section 172.527 must be orange. The - * - shall be replaced, when required, with the appropriate compatibility group letter. The division numeral, 1.5, must measure at least 64 mm (2.5 inches) in height. The text, numerals and inner border must be black. [Amdt. 172-123, 55 FR 52602, Dec. 21, 1990, as amended at 56 FR 66261, Dec. 20, 1991] Section 172.525 EXPLOSIVES 1.6 placard. (a) Except for size and color the EXPLOSIVES 1.6 placard must be as follows: (b) In addition to complying with Section 172.519 of this subpart, the background color on the EXPLOSIVES 1.4 placard must be orange. The - * - shall be replaced, when required, with the appropriate compatibility group letter. The division numeral, 1.4, must measure at least 64 mm (2.5 inches) in height. The text, numerals and inner border must be black. [Amdt. 172-123, 55 FR 52602, Dec. 21, 1990, as amended at 56 FR 66261, Dec. 20, 1991] Section 172.524 EXPLOSIVES 1.5 placard. (a) Except for size and color, the EXPLOSIVES 1.5 placard must be as follows: (b) In addition to complying with Section 172.519 of this subpart, the background color on the EXPLOSIVES 1.6 placard must be orange. The - * - shall be replaced, when required, with the appropriate compatibility group letter. The division numeral, 1.6, must measure at least 64 mm (2.5 inches) in height. The text, numerals and inner border must be black. [Amdt. 172-123, 55 FR 52603, Dec. 21, 1990, as amended at 56 FR 66261, Dec. 20, 1991; Amdt. 172-130, 58 FR 51531, Oct. 1, 1993] (b) In addition to complying with the Section 172.519 of this subpart, the background color on EXPLOSIVES 1.5 placard (a) Except for size and color, the square background required by Section 172.510(a) for certain placards on rail cars, and Section 172.507 for placards on motor vehicles containing a package of highway route controlled quantity radioactive materials, must be as follows: 433 VerDate Sep<11>2014 16:41 Oct 31, 2018 Jkt 244226 PO 00000 Frm 00443 Fmt 8010 Sfmt 8010 Q:\49\49V2.TXT PC31 EC02MR91.042 Section 172.527 Background requirements for certain placards. EC02MR91.043 [Reserved] EC02MR91.041 Section 172.526