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.

The latest general information on the Coronavirus (COVID-19) is available on For PHMSA contact information during the COVID-19 health emergency, please visit our page.

United States Department of Transportation United States Department of Transportation

Latest Actions

April 9, 2021

Lithium Battery Air Safety Advisory Committee

This meeting will be held virtually. Please monitor this website for forthcoming meeting details. You may also review the Federal Register Notice for additional information.
March 4, 2021

PHMSA Notice of Administrative Discretion and Guidance for Renewal of RIN Approvals During the COVID-19 Public Health Emergency

In order to inspect, test, certify, repair, or rebuild certain types of cylinders and pressure receptacles, a person must be approved by PHMSA.  Travel restrictions and quarantine requirements imposed by various government agencies during the COVID-19...

January 15, 2021

PHMSA Proposed Rule: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments - Pipeline Safety

The notice of proposed rulemaking (NPRM) published today would incorporate by reference new, updated, or reaffirmed editions of more than 20 consensus standards into the Federal pipeline safety regulations.
January 12, 2021

PHMSA Safety Advisory Notice: Special Permits for Composite Gas Cylinders

On March 3, 2020, the Pipeline and Hazardous Materials Safety Administration (PHMSA) conducted an Investigative Hearing in response to incidents and roll-over crashes associated with operations using packagings authorized under certain Hazardous...
December 30, 2020

PHMSA Notice of Enforcement Discretion for Cylinders Exceeding Periodic Testing Dates – Dec 2020

The COVID-19 public health emergency continues to provide challenges for gas cylinder exchanges to receive and distribute cylinders that can be filled in accordance with the requalification requirements included in the Federal Hazardous Materials...

December 28, 2020

PHMSA Final Rule: Miscellaneous Amendments Pertaining to DOT-Specification Cylinders - Hazardous Materials

The final rule revises certain requirements applicable to the manufacture, use, and requalification of DOT-specification cylinders. The rule incorporates by reference or updates the references to several Compressed Gas Association publications, amends...

December 21, 2020

PHMSA Final Rule: Editorial Corrections and Clarifications - Hazardous Materials

This final rulemaking corrects editorial errors and improves the clarity of certain provisions in the Hazardous Materials Regulations and PHMSA program and procedural regulations. The rulemaking works to enhance the accuracy and reduce...

December 7, 2020

PHMSA Notice of Reinstatement and Extension of Enforcement Policy Regarding Hand Sanitizers

As the COVID-19 public health emergency continues, PHMSA is reinstating and extending the Notice of Enforcement Discretion to offerors and carriers who offer or transport hand sanitizers manufactured and packaged prior to October 31, 2020, and in...