398 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.303 

table. For example, a tank car marked 
‘‘NITRIC OXIDE’’ need not be re-
marked ‘‘NITRIC OXIDE, COM-
PRESSED’’. 

(g) A rail car, freight container, 

truck body or trailer in which the lad-
ing has been fumigated with any haz-
ardous material, or is undergoing fumi-
gation, must be marked as specified in 
§ 173.9 of this subchapter. 

[Amdt. 172–123, 55 FR 52591, Dec. 21, 1990, as 
amended at 56 FR 66254, Dec. 20, 1991; Amdt. 
172–150, 61 FR 50624, Sept. 26, 1996; Amdt. 172– 
151, 62 FR 1228, Jan. 8, 1997; 62 FR 39398, July 
22, 1997; 66 FR 45379, Aug. 28, 2001; 70 FR 73164, 
Dec. 9, 2005; 72 FR 55692, Oct. 1, 2007; 85 FR 
75712, Nov. 25, 2020] 

§ 172.303

Prohibited marking. 

(a) No person may offer for transpor-

tation or transport a package which is 
marked with the proper shipping name, 
the identification number of a haz-
ardous material or any other markings 
indicating that the material is haz-
ardous (e.g., RQ, INHALATION HAZ-
ARD) unless the package contains the 
identified hazardous material or its 
residue. 

(b) This section does not apply to— 
(1) Transportation of a package in a 

transport vehicle or freight container 
if the package is not visible during 
transportation and is loaded by the 
shipper and unloaded by the shipper or 
consignee. 

(2) Markings on a package which are 

securely covered in transportation. 

(3) The marking of a shipping name 

on a package when the name describes 
a material not regulated under this 
subchapter. 

[Amdt. 172–123, 55 FR 52591, Dec. 21, 1990, as 
amended at 56 FR 66254, Dec. 20, 1991; 72 FR 
55692, Oct. 1, 2007] 

§ 172.304

Marking requirements. 

(a) The marking required in this sub-

part— 

(1) Must be durable, in English and 

printed on or affixed to the surface of a 
package or on a label, tag, or sign. 

(2) Must be displayed on a back-

ground of sharply contrasting color; 

(3) Must be unobscured by labels or 

attachments; and 

(4) Must be located away from any 

other marking (such as advertising) 

that could substantially reduce its ef-
fectiveness. 

(b) [Reserved] 

[Amdt. 172–29, 41 FR 15996, Apr. 15, 1976, as 
amended by Amdt. 172–29B, 41 FR 57067, Dec. 
30, 1976] 

§ 172.306

[Reserved] 

§ 172.308

Authorized abbreviations. 

(a) Abbreviations may not be used in 

a proper shipping name marking except 
as authorized in this section. 

(b) The abbreviation ‘‘ORM’’ may be 

used in place of the words ‘‘Other Reg-
ulated Material.’’ 

(c) Abbreviations which appear as au-

thorized descriptions in column 2 of the 
§ 172.101 table (e.g., ‘‘TNT’’ and ‘‘PCB’’) 
are authorized. 

[Amdt. 172–123, 55 FR 52591, Dec. 21, 1990, as 
amended by Amdt. 172–145, 60 FR 49110, Sept. 
21, 1995] 

§ 172.310

Class 7 (radioactive) mate-

rials. 

In addition to any other markings re-

quired by this subpart, each package 
containing Class 7 (radioactive) mate-
rials must be marked as follows: 

(a) Each package with a gross mass 

greater than 50 kg (110 lb) must have 
its gross mass including the unit of 
measurement (which may be abbre-
viated) marked on the outside of the 
package. 

(b) Each industrial, Type A, Type 

B(U), or Type B(M) package must be 
legibly and durably marked on the out-
side of the packaging, in letters at 
least 12 mm (0.47 in) high, with the 
words ‘‘TYPE IP–1,’’ ‘‘TYPE IP–2,’’ 
‘‘TYPE IP–3,’’ ‘‘TYPE A,’’ ‘‘TYPE 
B(U)’’ or ‘‘TYPE B(M),’’ as appropriate. 
A package which does not conform to 
Type IP–1, Type IP–2, Type IP–3, Type 
A, Type B(U) or Type B(M) require-
ments may not be so marked. 

(c) Each package which conforms to 

an IP–1, IP–2, IP–3 or a Type A package 
design must be legibly and durably 
marked on the outside of the pack-
aging with the international vehicle 
registration code of the country of ori-
gin of the design. The international ve-
hicle registration code for packages de-
signed by a United States company or 
agency is the symbol ‘‘USA.’’