USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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


Section §172.200: Applicability

Below are the available interpretations and guidance for the given section. To return to the list of parts, use the Parts link above. If you do not see any guidance or interpretation information below, that means there is none available for the given part/section. Return to the search page to browse additional regulations sections.

PHMSA has published several Frequently Asked Questions (FAQ) documents on regulatory topics. Please review our FAQ documents below:

Additionally PHMSA has Hazardous Materials FAQs based on letters of interpretation on the following topics:

This section of the website provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. Below is a list of parts, identified by the part number and subject. To browse sections by part, click on the subject link below. You will be taken to the eCFR website to view sections for a part.

A written regulatory interpretation, response to a question, or an opinion concerning a pipeline safety issue may be obtained by submitting a written request to the Office of Pipeline Safety (PHP–30), PHMSA, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590–0001 or at the email address: In addition to email address, the requestor must include his or her return address and should also include a daytime telephone number. Requests should be submitted at least 120 days before the time the requestor needs a response.

Note: electronic submission is provided as alternative to the 49 CFR Part 190.11(b) mail-in requirement.

The regulations text of the section can be found on the eCFR website. To view the regulations text, use the link below. For assistance, please send an email to

View section 172.200 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
20-0007 Oxyde Chemicals, Inc. Mr. Adrian Medina View
19-0003 Cabela's Dale Kettler View
09-0285 Mr. Brad Bockey View
13-0150 Fowler Transportation Ltd. Mr. Kevin Riley View
00-0001 RPS, Inc. Mr. Jerry W. Freeman View
12-0115 Forrest Paint Company Mr. Rich Nolan View
14-0160 North America Dangerous Cargo (Maersk) Mr. Charles A. Giglia View
16-0092 Mr. Richard Lloyd View
12-0035 Winchester Ammunition Ms. Laura Hamilton View
05-0088 Thunderbird Cylinder, Inc. Mr. Fred A. Nachrnan View
12-0215 Hazardous Materials Specialist Mr. Tom Forbes View
05-0297 U.S Battery Manufacturing Company Mr. Terry Campbell View
13-0002 UPS Mr. Samuel S. Elkind View
11-0196 Integrated Support Services Mr. Chuck Kimball View
11-0189R Mr. W. Eugene Sanders III W.E. Train Consulting View
11-0061 Ventura Transfer Company Mr. Jim Cheney View
15-0243 Environmental Health & Safety Ms. Marilyn Winterburg View
04-0061 Grammar industries Charles L. Whittington View
10-0071 Holland & Knight Law Firm Mr. Jonathan Epstein View
11-0128 Oregon Department of Environmental Quality Mr. Brian Allen View