--- kind: "range" citation: "49 C.F.R. §§ 172.521–172.560" title: "49" from: "172.521" to: "172.560" count: 25 url: "https://uscodex.org/cfr/49/172.521..172.560" --- # §172.521. DANGEROUS placard. - (a) Except for size and color, the DANGEROUS placard must be as follows: - (b) In addition to meeting the requirements of [§ 172.519](/cfr/49/172.519.md), and appendix B to this part, the DANGEROUS placard must have a red upper and lower triangle. The placard center area and 1/2-inch (12.7 mm.) border must be white. The inscription must be black with the 1/8-inch (3.2 mm.) border marker in the white area at each end of the inscription red. # §172.522. EXPLOSIVES 1.1, EXPLOSIVES 1.2 and EXPLOSIVES 1.3 placards. - (a) Except for size and color, the EXPLOSIVES 1.1, EXPLOSIVES 1.2 and EXPLOSIVES 1.3 placards must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md) of this subpart, the background color on the EXPLOSIVES 1.1, EXPLOSIVES 1.2, and EXPLOSIVES 1.3 placards must be orange. The “*” shall be replaced with the appropriate division number and, when required, appropriate compatibility group letter. The symbol, text, numerals and inner border must be black. # §172.523. EXPLOSIVES 1.4 placard. - (a) Except for size and color, the EXPLOSIVES 1.4 placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md) 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. # §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 the [§ 172.519](/cfr/49/172.519.md) of this subpart, the background color on EXPLOSIVES 1.5 placard 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. # §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 [§ 172.519](/cfr/49/172.519.md) 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. # §172.526. Reserved # §172.527. Background requirements for certain placards. - (a) Except for size and color, the square background required by [§ 172.510(a)](/cfr/49/172.510.md?p=a) for certain placards on rail cars, and [§ 172.507](/cfr/49/172.507.md) for placards on motor vehicles containing a package of highway route controlled quantity radioactive materials, must be as follows: - (b) In addition to meeting the requirements of [§ 172.519](/cfr/49/172.519.md) for minimum durability and strength, the square background must consist of a white square measuring 14 1/4 inches (362.0 mm.) on each side surrounded by a black border extending to 15 1/4 inches (387.0 mm.) on each side. # §172.528. NON-FLAMMABLE GAS placard. - (a) Except for size and color, the NON-FLAMMABLE GAS placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the NON-FLAMMABLE GAS placard must be green. The letters in both words must be at least 38 mm (1.5 inches) high. The symbol, text, class number and inner border must be white. # §172.530. OXYGEN placard. - (a) Except for size and color, the OXYGEN placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md) of this subpart, the background color on the OXYGEN placard must be yellow. The symbol, text, class number and inner border must be black. # §172.532. FLAMMABLE GAS placard. - (a) Except for size and color, the FLAMMABLE GAS placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the FLAMMABLE GAS placard must be red. The symbol, text, class number and inner border must be white. # §172.536. Reserved # §172.540. POISON GAS placard. - (a) Except for size and color, the POISON GAS placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background on the POISON GAS 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 (2 5/8 inches) above the horizontal center line. The text, class number, and inner border must be black. # §172.542. FLAMMABLE placard. - (a) Except for size and color, the FLAMMABLE placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the FLAMMABLE placard must be red. The symbol, text, class number and inner border must be white. - (c) The word “GASOLINE” may be used in place of the word “FLAMMABLE” on a placard that is displayed on a cargo tank or a portable tank being used to transport gasoline by highway. The word “GASOLINE” must be shown in white. # §172.544. COMBUSTIBLE placard. - (a) Except for size and color, the COMBUSTIBLE placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the COMBUSTIBLE placard must be red. The symbol, text, class number and inner border must be white. On a COMBUSTIBLE placard with a white bottom as prescribed by [§ 172.332(c)(4)](/cfr/49/172.332.md?p=c-4), the class number must be red or black. - (c) The words “FUEL OIL” may be used in place of the word “COMBUSTIBLE” on a placard that is displayed on a cargo tank or portable tank being used to transport by highway fuel oil that is not classed as a flammable liquid. The words “FUEL OIL” must be white. # §172.546. FLAMMABLE SOLID placard. - (a) Except for size and color, the FLAMMABLE SOLID placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background on the FLAMMABLE SOLID placard must be white with seven vertical red stripes. The stripes must be equally spaced, with one red stripe placed in the center of the label. Each red stripe and each white space between two red stripes must be 25 mm (1.0 inches) wide. The letters in the word “SOLID” must be at least 38.1 mm (1.5 inches) high. The symbol, text, class number and inner border must be black. # §172.547. SPONTANEOUSLY COMBUSTIBLE placard. - (a) Except for size and color, the SPONTANEOUSLY COMBUSTIBLE placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the SPONTANEOUSLY COMBUSTIBLE placard must be red in the lower half and white in upper half. The letters in the word “SPONTANEOUSLY” must be at least 12 mm (0.5 inch) high. The symbol, text, class number and inner border must be black. # §172.548. DANGEROUS WHEN WET placard. - (a) Except for size and color, the DANGEROUS WHEN WET placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the DANGEROUS WHEN WET placard must be blue. The letters in the words “WHEN WET” must be at least 25 mm (1.0 inches) high. The symbol, text, class number and inner border must be white. # §172.550. OXIDIZER placard. - (a) Except for size and color, the OXIDIZER placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the OXIDIZER placard must be yellow. The symbol, text, division number and inner border must be black. # §172.552. ORGANIC PEROXIDE placard. - (a) Except for size and color, the ORGANIC PEROXIDE placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background on the ORGANIC PEROXIDE placard must be red in the top half and yellow in the lower half. The text, division number and inner border must be black; the symbol may be either black or white. - (c) For transportation by highway, a Division 5.2 placard conforming to the specifications in this section in effect on December 31, 2006 may continue to be used until January 1, 2014. # §172.553. Reserved # §172.554. POISON placard. - (a) Except for size and color, the POISON placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), 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”. # §172.555. POISON INHALATION HAZARD placard. - (a) Except for size and color, the POISON INHALATION HAZARD placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), 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 (2 5/8 inches) above the horizontal center line. The text, class number, and inner border must be black. # §172.556. RADIOACTIVE placard. - (a) Except for size and color, the RADIOACTIVE placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), 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 ±5 mm (1.1 inches ±0.2 inches) above the placard horizontal center line. The symbol, text, class number and inner border must be black. # §172.558. CORROSIVE placard. - (a) Except for size and color, the CORROSIVE placard must be as follows: - (b) In addition to complying with [§ 172.519](/cfr/49/172.519.md), the background color on the CORROSIVE placard must be black in the lower portion with a white triangle in the upper portion. The base of the white triangle must be 38 mm ±5 mm (1.5 inches ±0.2 inches) above the placard horizontal center line. The text and class number must be white. The symbol and inner border must be black. # §172.560. CLASS 9 placard. - (a) Except for size and color the CLASS 9 (miscellaneous hazardous materials) placard must be as follows: - (b) In addition to conformance with [§ 172.519](/cfr/49/172.519.md), the background on the CLASS 9 placard must be white with seven black vertical stripes on the top half extending from the top of the placard to one inch above the horizontal centerline. The black vertical stripes must be spaced so that, visually, they appear equal in width to the six white spaces between them. The space below the vertical lines must be white with the class number 9 underlined and centered at the bottom.