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49 CFR Ch. I (10–1–18 Edition) 

§ 172.521 

provided that information is printed 
outside of the solid line inner border in 
no larger than 10-point type. 

(f) 

Exceptions. 

When hazardous mate-

rials are offered for transportation or 
transported under the provisions of 
subpart C of part 171 of this subchapter, 
a placard conforming to the specifica-
tions in the ICAO Technical Instruc-
tions, the IMDG Code, or the Transport 
Canada TDG Regulations (IBR, see 
§ 171.7 of this subchapter) may be used 
in place of a corresponding placard 
conforming to the requirements of this 
subpart. However, a bulk packaging, 
transport vehicle, or freight container 
containing a material poisonous by in-
halation (see § 171.8 of this subchapter) 
must be placarded in accordance with 
this subpart (see § 171.23(b)(10) of this 
subchapter). 

(g) 

Trefoil symbol. 

The trefoil symbol 

on the RADIOACTIVE placard must 
meet the appropriate specification in 
appendix B of this part. 

[Amdt. 172–123, 55 FR 52601, Dec. 21, 1990, as 
amended at 56 FR 66260, Dec. 20, 1991; 57 FR 
45460, Oct. 1, 1992; Amdt. 172–143, 60 FR 50305, 
Sept. 28, 1995; 65 FR 50460, Aug. 18, 2000; 66 FR 
33426, June 21, 2001; 66 FR 44255, Aug. 22, 2001; 
67 FR 15743, Apr. 3, 2002; 70 FR 34075, June 13, 
2005; 69 FR 64473, Nov. 4, 2004; 72 FR 25176, 
May 3, 2007; 76 FR 43528, July 20, 2011; 76 FR 
56314, Sept. 13, 2011; 80 FR 1151, Jan. 8, 2015] 

§ 172.521

DANGEROUS placard. 

(a) Except for size and color, the 

DANGEROUS placard must be as fol-
lows: 

(b) In addition to meeting the re-

quirements of § 172.519, and appendix B 

to this part, the DANGEROUS placard 
must have a red upper and lower tri-
angle. 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 inscrip-
tion red. 

[Amdt. 172–29, 41 FR 15996, Apr. 15, 1976, as 
amended by Amdt. 172–29A, 41 FR 40680, Sept. 
20, 1976] 

§ 172.522

EXPLOSIVES 1.1, EXPLO-

SIVES 1.2 and EXPLOSIVES 1.3 
placards. 

(a) Except for size and color, the EX-

PLOSIVES 1.1, EXPLOSIVES 1.2 and 
EXPLOSIVES 1.3 placards must be as 
follows: 

(b) In addition to complying with 

§ 172.519 of this subpart, the background 
color on the EXPLOSIVES 1.1, EXPLO-
SIVES 1.2, and EXPLOSIVES 1.3 plac-
ards must be orange. The ‘‘*’’ shall be 
replaced with the appropriate division 
number and, when required, appro-
priate compatibility group letter. The 
symbol, text, numerals and inner bor-
der must be black. 

[Amdt. 172–123, 55 FR 52602, Dec. 21, 1990, as 
amended at 56 FR 66260, Dec. 20, 1991] 

§ 172.523

EXPLOSIVES 1.4 placard. 

(a) Except for size and color, the EX-

PLOSIVES 1.4 placard must be as fol-
lows: 

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