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
Subscribe to PHMSA Guidance

Tutorial: Emergency Response Guidebook (ERG) for Android

Reviews how to use the Android version of PHMSA's Emergency Response Guidebook (ERG) app. The ERG is a go-to manual for first responders who need to identify specific hazmat risks, steps to protect themselves, and the procedures for containing the incident as quickly and safely as possible.

STOP! Never refill 1 lb. propane bottles

The U.S. Department of Transportation, cautions the public to never refill DOT 39 cylinders, such as the 1lb. cylinders used for camping. These types of containers were not designed to withstand the stresses of emptying and refilling.

PHMSA's Webinar for M/R-Number Approval Termination

This webinar provides a basic understanding of Manufacturer and Reconditioner Approval numbers, and why PHMSA is proposing termination of current M-number approvals (without an expiration) and all R-number approvals. Federal Register Notice Docket No. PHMSA-2017-0084 Notice No. 2017-03 was...

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...