Section 172.336

49 CFR Ch. I (10-1-18 Edition)

panel or white square-on-point display
configuration unless - 
(1) The identification number is specified for the material in Section 172.101;
(2) The identification number is displayed on the placard, orange panel or
white square-on-point configuration
authorized by Section 172.332 or Section 172.336(b), as
appropriate, and any placard used for
display of the identification number
corresponds to the hazard class of the
material specified in Section 172.504;
(3) Except as provided under Section 172.336
(c)(4) or (c)(5), the package, freight container, or transport vehicle on which
the number is displayed contains the
hazardous material associated with
that identification number in Section 172.101.
(c)
Except
as
required
by
Section 172.332(c)(4) for a combustible liquid,
the identification number of a material
may be displayed only on the placards
required by the tables in Section 172.504.
(d) Except as provided in Section 172.336, a
placard bearing an identification number may not be used to meet the requirements of subpart F of this part
unless it is the correct identification
number for all hazardous materials of
the same class in the transport vehicle
or freight container on which it is displayed.
(e) Except as specified in Section 172.338, an
identification number may not be displayed on an orange panel on a cargo
tank unless affixed to the cargo tank
by the person offering the hazardous
material for transportation in the
cargo tank.
(f) If a placard is required by Section 172.504,
an identification number may not be
displayed on an orange panel unless it
is displayed in proximity to the
placard.
(g) No person shall add any color,
number, letter, symbol, or word other
than as specified in this subchapter, to
any identification number marking
display which is required or authorized
by this subchapter.

Section 172.336 Identification numbers; special provisions.
(a) When not required or prohibited
by this subpart, identification numbers
may be displayed on a transport vehicle or a freight container in the manner prescribed by this subpart.
(b) Identification numbers, when required, must be displayed on either orange panels (see Section 172.332(b)) or on a
plain white square-on-point display
configuration having the same outside
dimensions as a placard. In addition,
for materials in hazard classes for
which placards are specified and identification number displays are required,
but for which identification numbers
may not be displayed on the placards
authorized for the material (see
Section 172.334(a)),
identification
numbers
must be displayed on orange panels or
on the plain white square-on-point display configuration in association with
the required placards. An identification number displayed on a white
square-on-point display configuration
is not considered to be a placard.
(1) The 100 mm (3.9 inch) by 215 mm
(8.5 inches) area containing the identification number shall be located as prescribed by Section 172.332 (c)(1) and (c)(2) and
may be outlined with a solid or dotted
line border.
(2) [Reserved]
(c) Identification Numbers are not required:
Then the alternative marking requirement is:

Packaging:

When:

On the ends of
portable tanks,
cargo tanks, or
tank cars.

They have more
than one compartment and
hazardous materials with different identification numbers
are being transported therein.

On cargo tanks .....

They contain only
gasoline.

[Amdt. 172-101, 45 FR 74667, Nov. 10, 1980, as
amended by Amdt. 172-104, 51 FR 23078, June
25, 1986; Amdt. 172-110, 52 FR 29528, Aug. 10,
1987; Amdt. 172-123, 55 FR 52593, Dec. 21, 1990;
56 FR 66255, Dec. 20, 1991; Amdt. 172-127, 59
FR 49133, Sept. 26, 1994]

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PC31

The identification
numbers on the
sides of the tank
are displayed in
the same sequence as the
compartments
containing the
materials they
identify.
The tank is
marked  - Gasoline -  on each
side and rear in
letters no less
than 50 mm (2
inches) high, or
is placarded in
accordance with
Section 172.542(c).