# XPO Logistics — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 21-0059
- **title:** XPO Logistics — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2022-02-03
- **effective on:** Not available
- **summary:** 21-0059 response to XPO Logistics concerning 172.332, 172.544.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-21-0059.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-21-0059.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-21-0059
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/docs/standards-rulemaking/hazmat/interpretations/76246/210059.pdf
**body:**

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U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
February 3, 2022
Ms. Marie Copeman
XPO Logistics
2211 Old Earhart Road
Ann Arbor, MI 48105
Reference No. 21-0059
Dear Ms. Copeman:
This letter is in response to your May 25, 2021, email requesting clarification of the Hazardous
Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to placarding. In your email,
you describe a scenario where a vehicle is placarded on four sides—two sides with rail
combustible liquid placards and two sides with standard combustible liquid placards. You ask
whether it is permissible to placard a vehicle using both the rail combustible liquid placards as
described in § 172.332(c)(4) and the standard combustible liquid placards as described in
§ 172.544, at the same time.
The answer is yes. As you noted in your email, § 172.332(c)(4) states “For a COMBUSTIBLE
placard used to display an identification number, the entire background below the white
background for the identification number must be white during transportation by rail and may be
white during transportation by highway.” Although not specified, there is no prohibition in the
HMR from using a combination of the two authorized combustible liquid placards on the same
motor vehicle by highway transportation. Therefore, it is the opinion of this Office that using
both placards on the same motor vehicle is permitted under the HMR only during highway
transportation.
I hope this information is helpful. Please contact us if we can be of further assistance.
Sincerely,
T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division

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Wolcott
From: INFOCNTR (PHMSA)
To: Dodd, Alice (PHMSA)
Cc: Hazmat Interps
Subject: FW: Letter of Interpretation Requested
Date: Wednesday, May 26, 2021 10:16:38 AM
Attachments: Inspection Report Redacted.pdf
21-0059
Good Morning Alice,
Please see the below Interpretation request and attachment.
Let us know if you need anything else from us.
Regards,
-Breanna
From: Marie Copeman [mailto:Marie.Copeman@xpo.com]
Sent: Tuesday, May 25, 2021 1:41 PM
To: PHMSA HM InfoCenter <PHMSAHMInfoCenter@dot.gov>
Subject: Letter of Interpretation Requested
CAUTION: This email originated from outside of the Department of Transportation (DOT). Do not click on links or
open attachments unless you recognize the sender and know the content is safe.
Good Afternoon,
One of our drivers received a violation from the Missouri State Highway Patrol. The
violation was for using two of four bulk combustible rail placards with the white bottom and
the other two being the regular combustible bulk placard with the red bottom. I called the
HMIC and was told, after the person discussed it with a standards colleague, that there was
no restriction for using these placards on the same vehicle during highway transportation.
Based on our discussion, I disputed the violation, however, the officer stated “We reached
out to FMCSA and they provided the attached PHMSA interpretation, which ways that each
side and each end of a freight container, unit load device, transport vehicle, or rail car must
have identical placards of design and quantity. PHMSA Interp # 20-0022”.
These were bulk containers containing a combustible liquid. Per 172.302 - General marking
requirements for bulk packagings, the vehicle was required to be marked as required by
172.332 (see 172.302(a)). 172.332(c)(4) states: "(4) For a COMBUSTIBLE placard used to
display an identification number, the entire background below the white background for the
identification number must be white during transportation by rail and may be white during
transportation by highway."
The letter of interpretation is below. A copy of the inspection report (personal information
redacted) is attached.
Based on the conversation I had with your office I do not feel this letter of interpretation
applies. Please provide us with a letter of interpretation which will clarify this specific

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situation.
Interpretation Response #20-0022
Below is the interpretation response detail and a list of regulations sections applicable to
this response.
Interpretation Response Details
Response Publish Date: 05-07-2020
Company Name: Railsback HazMat Safety Professionals LLC Individual Name: Rex
Railsback
Location state: KS Country: US
View the Interpretation Document
Response text:
May 7, 2020
Rex Railsback
HazMat Specialist
Railsback HazMat Safety Professionals LLC
312 Lawrence Ave
Lawrence, KS 66049
Reference No. 20-0022
Dear Mr. Railsback:
This letter is in response to your March 5, 2020 email requesting clarification of the
Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to placarding.
Specifically, you request the applicability of the response in previous Letter of Interpretation
(LOI) No. 05-0108 as it relates to a number of scenarios you describe. You state the
scenario in LOI No. 05-0108 involves a transport vehicle that requires placards, but also
meets the requirements to utilize the "Dangerous" placard as specified in § 172.504(b). In
the same scenario, a vehicle is placarded on two ends with "Flammable Gas" placards, and
on two sides with "Dangerous" placards. You state that LOI No. 05-0108 specifies that such
placarding would not be authorized by the HMR, and that the vehicle should be placarded
with the same placard(s) on both ends and both sides. Lastly, you state it is your
understanding that this letter implies a person cannot mix required placards with other
placards that are authorized by an exception.
We have paraphrased and answered your questions as follows:

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Q1. You ask whether use of the "Flammable" and "Corrosive" placards on three sides of a
vehicle and the "Dangerous" placard on the fourth side in accordance with the exception
requirements for the "Dangerous" placard in § 172.504(b) is permitted for a transport
vehicle that is loaded with 600 lbs. of Class 3 (Flammable) material in non-bulk packages
and 600 lbs. of Class 8 (Corrosive) material in non-bulk packages.
A1. The answer is no. A freight container, unit load device, transport vehicle, or rail car
which contains non-bulk packages with two or more categories of hazardous materials that
require different placards specified in table 2 of § 172.504(e) may be placarded with a
"Dangerous" placard instead of the separate placarding specified for each of the materials
in table 2. However, each side and each end of a freight container, unit load device,
transport vehicle, or rail car must have identical placards in design and quantity.
Q2. You ask whether use of the "Flammable Gas" placard on two ends of the vehicle and
the "Flammable Gas" and "Non-Flammable Gas" placards on two sides of the vehicle using
the exception for the "Non-Flammable Gas" placard in § 172.504(f)(3) is permitted for a
transport vehicle that is loaded with 600 lbs. of Division 2.1 (Flammable Gas) material in
non-bulk packages and 600 lbs. of Division 2.2 (Non-flammable Gas) material in non-bulk
packages.
A2. The answer is no. Each side and each end of a freight container, unit load device,
transport vehicle, or rail car must have identical placards in design and quantity.
Q3. You ask whether use of the "Non-Flammable Gas" placards on two ends of the vehicle
and the "Oxygen" placard on two sides of the vehicle in accordance with the exception for
the "Oxygen" placard in § 172.504(f)(7) is permitted if a transport vehicle is loaded with
1,200 lbs. of Division 2.2, Oxygen, compressed in non-bulk packages.
A3. The answer is no. Each side and each end of a freight container, unit load device,
transport vehicle, or rail car must have identical placards in design and quantity.
I hope this information is helpful. Please contact us if we can be of further assistance.
Sincerely,
T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division
172.504(b), 172.504(e), 172.504(f)(3), 172.504(f)(7)

<<<PAGE 5>>>

Respectfully,
Marie Copeman
Less-Than-Truckload
Manager of Safety Compliance
XPOLogistics
2211 Old Earhart Road
Ann Arbor USA

<<<PAGE 6>>>

DRIVER/VEHICLE EXAMINATION REPORT
Aspen 3.0.0.17
Missouri State Highway Patrol
Commercial Vehicle Enforcement Division
Report Number: MO00SH004596
P.O. Box 568, Jefferson City, MO 65102-0568
Inspection Date: 04/05/2021
Start: 08:53 AM CT
Return of report NOT required.
Phone: (573)526-6128 cvemail@mshp.dps.mo.gov
End: 9:30:00 AM CT
Inspection Level: I| - Walk-Around
HM Inspection Type: Bulk
XPO LOGISTICS FREIGHT INC
2211 OLD EARHART ROAD
Driver:
ANN ARBOR, MI 48105-2751
Date of Birth:
License#:
State: MO
USDOT#: 00241829
MC/MX#: 165377
Phone#: (734)994-6600
State#:
Fax#:
CoDriver:
License#:
Date of Birth:
State:
Location: 1900 N JEFFERSON
Highway: 164
MilePost:
County: SAINT LOUIS CITY, MO
Origin: ALVIN, TX
Shipper: EXCEL CHEMICAL, ALVIN TX 77511
Destination:ST LOUIS, MO
Bill of Lading: 738-383192
Cargo: NA1993
VEHICLE IDENTIFICATION
Unit Type Make Year State
1
Plate #
TT FRHT 2015 IN
Equipment ID
2498332
VIN
GVWR CVSA # CVSA Issued # OOS Sticker
2
5784609
ST UNK 1995 IN
P613598
1FUBCCYHE6842 34,000
315-3515
1RZ1KC1A4S1001491 40,000
BRAKE ADJUSTMENTS: No Brake Measurements Required For Level 2
VIOLATIONS
172.504A
Vio Code
172.504(a)
Section
Unit OOS
Citation #
Verify Crash Violations Discovered
Vehicle not placarded as required: 2 of 4 placards have a white
bottom while the other 2 of 4 have a red bottom
HazMat: 3 Combustible Liquid
Special Checks: Traffic Enforcement; Local Enforcement
Placard: Yes Cargo Tank:
State Information:
AGENCY: SLMPD;
I certify that the above violation(s) was/were corrected.
Signature Of Repairer X:
Facility:
Date:
Signature Of Motor Carrier X:
Title:
Date:
00241829 MO MO00SH004596
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