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



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 part 106 on the ECFR website

Regulation Sections

Section Subject
106.5 Defined terms used in this subpart
106.10 Process for issuing rules
106.15 Advance notice of proposed rulemaking
106.20 Notice of proposed rulemaking
106.25 Revising regulations without first issuing an ANPRM or NPRM
106.30 Final rule
106.35 Interim final rule
106.40 Direct final rule
106.45 Tracking rulemaking actions
106.50 Defined terms used in this subpart
106.55 Public participation in the rulemaking process
106.60 Filing comments
106.65 Required information for written comments
106.70 Where and when to file comments
106.75 Extension of time to file comments
106.80 Public meeting procedures
106.85 Requesting a public meeting
106.90 Other rulemaking proceedings
106.95 Requesting a change to the regulations
106.100 Required information for a petition for rulemaking
106.105 PHMSA response to a petition for rulemaking
106.110 Appealing a PHMSA Action
106.115 Required information for an appeal
106.120 Appeal deadline
106.125 Filing an appeal
106.130 PHMSA response to an appeal