427 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.505 

freight containers, unit load devices, 
transport vehicles or rail cars which 
also contain Division 1.1 or 1.2 mate-
rials and which are placarded with EX-
PLOSIVES 1.1 or 1.2 placards, as re-
quired. 

(5) For transportation by transport 

vehicle or rail car only, an OXIDIZER 
placard is not required for Division 5.1 
materials on a transport vehicle, rail 
car or freight container which also con-
tains Division 1.5 explosives and is 
placarded with EXPLOSIVES 1.5 plac-
ards, as required. 

(6) The EXPLOSIVE 1.4 placard is not 

required for those Division 1.4 Compat-
ibility Group S (1.4S) materials that 
are not required to be labeled 1.4S. 

(7) For domestic transportation of 

oxygen, compressed or oxygen, refrig-
erated liquid, the OXYGEN placard in 
§ 172.530 of this subpart may be used in 
place of a NON-FLAMMABLE GAS 
placard. 

(8) For domestic transportation, a 

POISON INHALATION HAZARD 
placard is not required on a transport 
vehicle or freight container that is al-
ready placarded with the POISON GAS 
placard. 

(9) For Class 9, a CLASS 9 placard is 

not required for domestic transpor-
tation, including that portion of inter-
national transportation, defined in 
§ 171.8 of this subchapter, which occurs 
within the United States. However, a 
bulk packaging must be marked with 
the appropriate identification number 
on a CLASS 9 placard, an orange panel, 
or a white square-on-point display con-
figuration as required by subpart D of 
this part. 

(10) For Division 6.1, PG III mate-

rials, a POISON placard may be modi-
fied to display the text ‘‘PG III’’ below 
the mid line of the placard. 

(11) For domestic transportation, a 

POISON placard is not required on a 
transport vehicle or freight container 
required to display a POISON INHALA-
TION HAZARD or POISON GAS 
placard. 

(g) For shipments of Class 1 (explo-

sive materials) by aircraft or vessel, 
the applicable compatibility group let-
ter must be displayed on the placards, 
or labels when applicable, required by 
this section. When more than one com-
patibility group placard is required for 

Class 1 materials, only one placard is 
required to be displayed, as provided in 
paragraphs (g)(1) through (g)(4) of this 
section. For the purposes of paragraphs 
(g)(1) through (g)(4), there is a distinc-
tion between the phrases 

explosive arti-

cles 

and 

explosive substances. Explosive 

article 

means an article containing an 

explosive substance; examples include 
a detonator, flare, primer or fuse. 

Ex-

plosive substance 

means a substance 

contained in a packaging that is not 
contained in an article; examples in-
clude black powder and smokeless pow-
der. 

(1) Explosive articles of compat-

ibility groups C, D or E may be plac-
arded displaying compatibility group 
E. 

(2) Explosive articles of compat-

ibility groups C, D, or E, when trans-
ported with those in compatibility 
group N, may be placarded displaying 
compatibility group D. 

(3) Explosive substances of compat-

ibility groups C and D may be plac-
arded displaying compatibility group 
D. 

(4) Explosive articles of compat-

ibility groups C, D, E or G, except for 
fireworks, may be placarded displaying 
compatibility group E. 

[Amdt. 172–123, 55 FR 52600, Dec. 21, 1990] 

E

DITORIAL

N

OTE

: For F

EDERAL

R

EGISTER

ci-

tations affecting § 172.504, see the List of CFR 
Sections Affected, which appears in the 
Finding Aids section of the printed volume 
and at 

www.fdsys.gov. 

§ 172.505

Placarding for subsidiary 

hazards. 

(a) Each transport vehicle, freight 

container, portable tank, unit load de-
vice, or rail car that contains a poi-
sonous material subject to the ‘‘Poison 
Inhalation Hazard’’ shipping descrip-
tion of § 172.203(m) must be placarded 
with a POISON INHALATION HAZARD 
or POISON GAS placard, as appro-
priate, on each side and each end, in 
addition to any other placard required 
for that material in § 172.504. Duplica-
tion of the POISON INHALATION 
HAZARD or POISON GAS placard is 
not required. 

(b) In addition to the RADIOACTIVE 

placard which may be required by 
§ 172.504(e), each transport vehicle, 
portable tank or freight container that 

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