Pipeline and Haz. Matls. Safety Admin., DOT
freight containers, unit load devices,
transport vehicles or rail cars which
also contain Division 1.1 or 1.2 materials and which are placarded with EXPLOSIVES 1.1 or 1.2 placards, as required.
(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 contains Division 1.5 explosives and is
placarded with EXPLOSIVES 1.5 placards, as required.
(6) The EXPLOSIVE 1.4 placard is not
required for those Division 1.4 Compatibility Group S (1.4S) materials that
are not required to be labeled 1.4S.
(7) For domestic transportation of
oxygen, compressed or oxygen, refrigerated liquid, the OXYGEN placard in
Section 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 already placarded with the POISON GAS
placard.
(9) For Class 9, a CLASS 9 placard is
not required for domestic transportation, including that portion of international transportation, defined in
Section 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 configuration as required by subpart D of
this part.
(10) For Division 6.1, PG III materials, a POISON placard may be modified 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 INHALATION HAZARD or POISON GAS
placard.
(g) For shipments of Class 1 (explosive materials) by aircraft or vessel,
the applicable compatibility group letter must be displayed on the placards,
or labels when applicable, required by
this section. When more than one compatibility group placard is required for

Section 172.505

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 distinction between the phrases explosive articles and explosive substances. Explosive
article means an article containing an
explosive substance; examples include
a detonator, flare, primer or fuse. Explosive substance means a substance
contained in a packaging that is not
contained in an article; examples include black powder and smokeless powder.
(1) Explosive articles of compatibility groups C, D or E may be placarded displaying compatibility group
E.
(2) Explosive articles of compatibility groups C, D, or E, when transported with those in compatibility
group N, may be placarded displaying
compatibility group D.
(3) Explosive substances of compatibility groups C and D may be placarded displaying compatibility group
D.
(4) Explosive articles of compatibility 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]
EDITORIAL NOTE: For FEDERAL REGISTER citations affecting Section 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.

Section 172.505 Placarding for subsidiary
hazards.
(a) Each transport vehicle, freight
container, portable tank, unit load device, or rail car that contains a poisonous material subject to the  - Poison
Inhalation Hazard -  shipping description of Section 172.203(m) must be placarded
with a POISON INHALATION HAZARD
or POISON GAS placard, as appropriate, on each side and each end, in
addition to any other placard required
for that material in Section 172.504. Duplication of the POISON INHALATION
HAZARD or POISON GAS placard is
not required.
(b) In addition to the RADIOACTIVE
placard which may be required by
Section 172.504(e), each transport vehicle,
portable tank or freight container that

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