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

PHMSA Guidance

951

Hazardous Materials Incident Response Training

PHMSA has partnered with the Department of Homeland Security's National Fire Academy to provide these Hazardous Materials Incident Response Training modules for first responders and non-responders. These training modules outline the competencies defined in Chapters 4 and 5 of the National Fire...

Transporting Infectious Substances Guidance

This brochure describes the revised USDOT regulations for the classification criteria and packaging requirements for the transportation of infectious substances, adopted into 49 CFR, Parts 171-180, effective October 1, 2006.

Mexican Standards and Guidance

Table contains a listing of Official Mexican Standards which have been published by the Mexican Secretariat for Communications and Transport for the land transportation of hazardous materials and wastes within Mexico.

PHMSA Issues Notice of Enforcement Discretion for Cylinders

PHMSA understands that due to the COVID-19 emergency, many members of the medical and industrial gas industry may be experiencing difficulty in obtaining cylinders due to the increased demand for these gases or a disruption in the normal business model for cylinder exchanges. The Notice in the...

Hazardous Materials: Unapproved Foreign-Made DOT Cylinders

PHMSA is issuing this safety advisory notice to inform the public, industrial gas stakeholders, and relevant government officials of the risks associated with requalifying, filling, and transporting cylinders bearing the DOT specification markings "DOT 4E" or "DOT 4BA" that were produced by a...