PHMSA has published several Frequently Asked Questions (FAQs) documents on programmatic topics. Please review these documents here at: https://www.phmsa.dot.gov/about-phmsa/phmsa-faqs.
Additionally, Office of Hazardous Materials Safety has published Hazardous Materials FAQs based on letters of interpretation on the following topics:
- Applicability of the Hazardous Materials Regulations
- Hazardous Materials Incident Reporting
- Training Requirements
Office of Hazardous Materials Safety: For questions about transporting hazardous materials, needing clarifications of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180), or requesting a formal letter of interpretation, please go to the Hazardous Materials Information Center (HMIC) page for contact information (phone and email address).
Office of Pipeline Safety: 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: pipeline_interp_submittal@dot.gov. 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.
This section of the website below provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. A list of parts, identified by the part number and subject is also provided. 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.
The eCFR is also searchable by keyword and other available options on the eCFR website. To search and browse regulations using the eCFR website, use the link below. For assistance, please send an email to PHMSA.Webmaster@dot.gov.
Search the eCFR
Ref ID: | Date Sort ascending | Company Name | Individual Name | Response Document |
---|---|---|---|---|
21-0050 | Arcimoto, Inc. | Pete Z | View | |
PI-20-0001 | Public Utilities Commission of Nevada | Mr. Neil Pascual | View | |
21-0036 | Entergy Operations Inc. | Donnie James | View | |
21-0025 | Schneider National Bulk Carriers | Shannon Schick | View | |
PI-19-0017 | Flint Hills Resources | Ms. Kim Gerold | View | |
PI-21-0005 | Wright and Associates PLLC | Ms. Charlene B. Wright | View | |
20-0087 | DHL Global Forwarding | Philip Poland | View | |
21-0035 | Momentive Performance Materials | Kirsten Pink | View | |
PI-21-0002 | High Roller E&C, LLC | Mr. Rob Harman | View | |
20-0094 | Stabilis Solutions | Mr. Vignesh Pandurengan | View | |
21-0019 | Burlington Products, Inc. | Bill Greene | View | |
21-0010 | Kansas Highway Patrol | Nicholas Wright | View | |
21-0012 | RCS RMS Inc. | Donna Adams | View | |
21-0001 | Oilmen’s Truck Tanks | Robert Strong | View | |
21-0024 | Matson Navigation Company | James Owen | View | |
21-0028 | McCallum Rock Drilling | Darren Amman | View | |
20-0084 | LANXESS Corporation | Cyndi Fink | View | |
21-0003 | N&M Transfer Co., Inc. | Cary Krickeberg | View | |
21-0029 | TETRA Technologies | Shawn Shoemake | View | |
21-0009 | BCA Packaging Services | Nelson Kays | View | |
21-0034 | Keith Baecht | View | ||
20-0053 | Hasa, Inc. | Dave Johnson | View | |
21-0016 | Amanda Davis | View | ||
20-0081 | Stablex US ecology | Pierre-Olivier Gagné | View | |
21-0005 | Rescar Companies | J. Andrew Schaffer | View | |
20-0078 | Starkey Laboratories, Inc. | Dawn Gardner | View | |
21-0015 | Iowa Dept. of Transportation | Robert Johnson | View | |
21-0007 | Truck Trailer Manufacturers Association | John Freiler | View | |
21-0011 | Air-Conditioning, Heating, and Refrigeration Institute (AHRI) | Helen Walter-Terrinoni | View | |
20-0073 | John B. Woodbury | View | ||
20-0068 | Zoll Medical Corporation | George Cole | View | |
21-0021 | XPO Logistics – Supply Chain | Erin Sineath | View | |
21-0004 | P.O.R. Products | Mark Newitz | View | |
20-0030 | ORBITAL ATK | Robert Weston | View | |
21-0006 | Fletcher & Sippel LLC | Michael Barron | View | |
20-0088 | National Presto Safety | J.R. Nerat | View | |
20-0040 | Silverback Consulting Group LLC | Michael Di Giorgio | View | |
20-0062 | Daniels Training Services, Inc. | Daniel Stoehr | View | |
20-0064 | MRIGlobal-NCR | Malcolm Smith | View | |
20-0033 | Fleener Consulting LLC | Mr. Arthur L. Fleener | View | |
20-0055 | Port of Portland | Geoff Owen | View | |
20-0082 | Lawrence Bierlein | View | ||
20-0092 | Public Utilities Commission of Ohio Transportation Department | Tom Forbes | View | |
20-0083 | Growmark, Inc. | Tom Bryant | View | |
20-0035 | Centers for Disease Control and Prevention (CDC) | Lori Bane | View | |
20-0089 | Austin Powder Company | Darrell A. Martin | View | |
20-0070 | Jacam Chemicals 2013, LLC | Jason Ontjes | View | |
20-0091 | Van Diest Supply Company | Bret Hilpipre | View | |
21-0002 | Centers for Disease Control and Prevention (CDC) | Dr. Jeanne Santoli, M.D. | View | |
20-0077 | Neoteryx | Stuart Kushon | View |