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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Interpretation Response #99-0082 ([Defense Logistics Agency] [Mr. James 0. Rimel, St.])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: Defense Logistics Agency

Individual Name: Mr. James 0. Rimel, St.

Location State: PA Country: US

View the Interpretation Document

Response text:

APR 22, 1999


Mr. James 0. Rimel, St.                         Ref. No. 99-0082

Chief, Distribution Operations

Defense Logistics Agency

Defense Distribution Center

2001 Mission Drive

New Cumberland, PA 17070

Dear Mr. Rimel:

This responds to your letter of March 24, 1999, concerning requirements for shipment of motor vehicles containing fire extinguishers or other hazardous materials under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). Specifically, you ask whether a fire extinguisher may be mounted in the motor vehicle during shipment and shipped under the provisions of §173.220(g) of the HMR.

Section 173.220 was recently revised.  In a. final rule published March 5, 1999, under Docket HM-215C, § 173.220(d) was amended to provide an exception from the requirements of the HMR for fire extinguishers, compressed gas accumulators, safety devices, and other hazardous materials that are integral components of a motor vehicle, engine, or equipment and are necessary to operate the equipment or for the safety of its operator or passengers.  Such hazardous materials must be securely installed in the motor vehicle, engine, or mechanical equipment, but are not otherwise subject to the requirements of the HMR.  The changes become effective on October 1, 1999.  Immediate voluntary compliance is authorized.

Enclosed for your information are the pages from the Federal Register publication that contain the revised text for § 173.220. You can view the complete final rule by accessing the hazardous materials safety home page at "" If you do not have Internet access, you can call the Hazardous Materials Information Center at 1-800-467-4922 to obtain a copy.

I hope this information is helpful.  If you have further questions, please do not hesitate to contact this office.



Thomas G. Allan

Senior Transportation Regulations Specialist

Office of Hazardous Materials Standards


Regulation Sections

Section Subject
173.220 Internal combustion engines, vehicles, machinery containing internal combustion engines, battery-powered equipment or machinery, fuel cell-powered equipment or machinery