# U. S. Coast Guard — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 98-0605
- **title:** U. S. Coast Guard — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 1998-09-24
- **effective on:** Not available
- **summary:** 98-0605 response to U. S. Coast Guard concerning 176.88.
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- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-98-0605.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-98-0605
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/1998/980605.pdf
**body:**

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of Transportation
U.S. Department
Washington, D.C.
400 Seventh Street, S.W.
20590
Research and
Special Programs
Administration
SEP 2 4 1998
J.B. Roberts
Lieutenant, U. S. Coast Guard
Chief, Port Services Department
1519 Alaskan Way South
Seattle, WA 98134-1192
Dear Lieutenant Roberts:
This is in reference to your letter requesting clarification of the requirements in the Hazardous
Materials Regulations (HMR; 49 CFR Parts 171-180) concerning hazardous materials in personal
vehicles when carried on board passenger ferry vessels. You state that you believe the HMR is
not applicable to this method of transportation because of the materials of trade definition in
§ 171.8. Specifically, you would like to know if shipments of these vehicles are considered "in
commerce." I apologize for the delay in responding.
Your understanding that the HMR do not apply to private (non-commercial) vehicles carrying
hazardous materials onboard passenger ferry vessels and that propane cylinders used for camping
equipment fall under the materials of trade definition in 49 CFR 171.8 is not correct. Materials of
trade, subject to certain quantity limitations, are limited to hazardous materials carried on a motor
vehicle: (1) for use in protecting the health and safety of the operator or passengers of the motor
vehicle, (2) for use in supporting the operation or maintenance of a motor vehicle (including its
auxiliary equipment), or (3) for use by a private motor carrier including vehicles operated by a
rail carrier) in direct support of a principal business that is other than transportation by motor
vehicle, such as lawn care, plumbing, etc. The materials of trade exceptions in § 173.6 are limited
to materials being transported by private motor carriers.
As stated in § 171.1(a)(1), the HMR apply to the transportation in commerce of hazardous
materials by vessel (except, as delegated at 49 CFR 1.46(t). The carriage of a motor vehicle
(including a personal motor vehicle) containing a hazardous material on board a passenger ferry
vessel is transportation in commerce and, therefore, is subject to the HMR. However, the HMR

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provides certain limited exceptions for vessels transporting a motor vehicle containing hazardous
materials if those materials are necessary for the operation of the vehicle or equipment, or for the
safety of its operator or passengers. See §§ 173.220(c)(1) and (g)(2), 176.90, 176.92, 176.93,
and 176.905(g)
I hope this satisfies your request.
Sincerely,
Hotte 2 michels
Hattie L. Mitchell
-
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards

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U.S. Department
of Transportation
Commanding Officer
J.S. Coast Guard
519 Alaskan Way Couti
United States
Marine Safety Office
eattle, WA 98134-119:
Coast Guard
Puget Sound (COP)
(206) 217-6232
6237 MC lintyre
File: 176,88
16450
SC: 516, 422
MAR 1 7 1997
Mr. Edward Mazzullo
Office of Hazardous Materii Is Standards
Research and Special Proyruns Hamristration
400 Seventh Street SW
Washington, D.C.
20590-0001
Dear Mr. Mazzullo,
Hazardous Materials Regulations (HMR) in Title 49, Code of
I am writing this letter requesting written clarification of the
--
Federal Regulations (CFR) as they pertain to the transportation
of hazardous materials in personal vehicles while carried onboard
passenger ferries:;
My interpretation of the regulations is that the HMR does not
carrying hazardous
of sagine, prane cy last eate or pent on racen
materials that fall under the malarials of tri le exceptio.
49 CFR 171.8). Also, 49 CFR 176.91 makes an 'allowanc: fo che
carriage of gasoline
limited quantity (0.3 gallons per 19 CFR 173.150) onboard a motor
(Class 3 Flammable Liquid) in excess ul the
vessel transported on a ferry.
hazardous materials in commerce while being transported as cargo,
It is apparent that the regulations' intent is to restrict
but not to restrict the transportation of hazardous materials for
private non-commercial use. The private vehicles are not carrying
the materials in support of a business or furtherance of a
- hazardous materials in
commercial enterprise and therefore are not transporting
vehicle operators a a pay: '3 for che transportition of their
"emerca" is "cargo" even though the_
vehicles.
Sincerely,
If That
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