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PHMSA: Hazmat Transportation Resources, Training, Registration and Contact Guide
The Pipeline and Hazardous Materials Safety Administration (PHMSA) is the U.S. Department of Transportation agency responsible for advancing safe transportation of energy and hazardous materials. Truck drivers and fleet teams can use its hazmat resources for regulatory questions, training publications, registration support and emergency-response reference materials.
Agency role and useful trucking resources
PHMSA develops national policy, establishes and enforces safety standards, provides education and conducts research to help protect people and the environment. Its work covers both pipelines and hazardous-material transportation. For trucking, the most useful starting points are the Hazardous Materials Information Center, hazmat publications, training modules, registration pages and regulatory interpretations.
The official site also provides data, incident-reporting information, approvals and permits, rulemaking notices, guidance and specialized resources for materials such as lithium batteries and infectious substances. Choose the resource that matches your shipment and role instead of treating a general overview as a shipment-specific determination.
Hazardous Materials Information Center
The Info Center provides assistance with the Hazardous Materials Regulations, including 49 CFR Parts 100–185. It can help explain hazmat-transportation requirements, provide rulemaking and special-permit information, supply training materials, receive reports of regulatory violations and explain how to request a formal interpretation.
Telephone: 800-467-4922 or 202-366-4488
Email: infocntr@dot.gov (also listed as phmsa.hm-infocenter@dot.gov)
Published live-assistance hours: Monday–Friday, 9 a.m.–5 p.m.
Fax: 202-366-5713
Telecommunications relay: 711
For written interpretation requests, the Info Center page lists the Standards and Rulemaking Division, U.S. DOT/PHMSA (PHH-10), 1200 New Jersey Avenue SE, East Building, 2nd Floor, Washington, DC 20590. Confirm the appropriate recipient with the Info Center before mailing a formal request; the explanatory page has an older update date.
Training, publications and the ERG
PHMSA’s outreach materials help readers understand hazmat rules and training requirements. Its publications include practical guidance on training, shipping papers, the hazardous materials table, packaging codes, marking, labeling and placarding. The training-module collection covers hazardous-material transportation topics; direct comments on the modules to training@dot.gov.
The agency publishes the Emergency Response Guidebook (ERG), including the 2024 edition on its official ERG page. Use the agency’s ERG page for current downloads, formats and explanatory resources. The ERG is an emergency-response reference; your employer’s required hazmat training and shipment procedures remain essential.
Check the Box is PHMSA’s public education initiative about safer hazmat shipping. Fleet teams can also use the outreach directory to locate educational tools and materials suited to their operation. For an accessible alternative version of a published file, the agency lists PHMSA-Accessibility@dot.gov.
Hazmat registration support
PHMSA operates a hazardous-materials registration program for covered offerors and transporters. Its online registration service supports initial registration, renewal, amendments and company-record lookup. Use the official registration guidance to determine the applicable company requirements and registration period.
Registration Help Desk: 202-366-4109
Email: register@dot.gov
Official starting point: Online registration services.
The company registration process and a driver’s CDL/hazmat endorsement are separate processes. For CDL-related contacts, see the FMCSA driver-resource profile and the relevant state licensing agency.
Headquarters and other verified agency contacts
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Agency telephone: 202-366-4433
- Pipeline safety concerns: 202-366-4595 or phmsa.pipelinesafety@dot.gov. This is the pipeline channel; use the Hazmat Information Center for truck shipment questions.
- Website concerns or feedback: phmsawebsitemanager@dot.gov.
- Waste, fraud, abuse or mismanagement: the DOT Inspector General hotline page provides the appropriate reporting channels.
Office of Hazardous Materials Safety regional contacts
The following offices are published on PHMSA’s field-operations contact page, updated June 2, 2026. Check that page for the states and territories assigned to each region before contacting an office.
| Region | Address and contact |
|---|---|
| Eastern | 840 Bear Tavern Road, Suite 300, West Trenton, NJ 08628 Phone 609-771-7890; fax 609-771-7490 |
| Central | 1100 Main Street, Suite 800, Box M2, Kansas City, MO 64105 Published email: randy.dick@dot.gov |
| Western | 3401 Centrelake Drive, Suite 550B, Ontario, CA 91761 Phone 909-937-3279; fax 909-390-5142 |
| Southwest | 8701 S. Gessner Road, Suite 900, Houston, TX 77074 Phone 713-272-2820; fax 713-272-2821 |
| Southern | 230 Peachtree Street NW, Suite 2100, Atlanta, GA 30303 Phone 404-832-1140; fax 404-832-1168 |
The current Central Region entry publishes an email rather than a phone or fax. Regional office hours are not stated on the reviewed contact page.
Use the right resource
- For a shipment-rule question, gather the material description and relevant operation details and contact the Hazmat Information Center.
- For a registration account or application question, use the Registration Help Desk.
- For education, locate the relevant PHMSA module, publication or outreach material and check its version.
- For a regional field-operations matter, check jurisdiction coverage on the regional directory.
- For a written interpretation, ask the Info Center about the submission route and include a clear description of the question.
Official references
- PHMSA mission
- Info Center assistance, email and hours
- Info Center phone, fax, address and relay
- Registration services and help desk
- Hazmat training modules
- Hazmat publications
- Emergency Response Guidebook
- Regional office directory and jurisdiction coverage
Official sources checked October 9, 2026. Independent informational profile by CompanyDriver.TV. Names and marks belong to their owners. Contact details and services can change. Referral UTM tags identify directory traffic and do not imply an affiliate relationship.