[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis
Frequently Asked Questions (FAQs)

The following a groups of Frequently Asked Questions.  Each group has a different specific topic focus.

Hazardous Materials Regulations FAQs
The hazardous materials regulations (HMR; 49 CFR Parts 171-180) provide requirements applicable to the commercial transportation of hazardous materials. Here you¿ll find some of the more frequently asked questions by topic area:
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Hazardous Materials Safety Resources
Hazardous Materials Information Center
1-800-HMR-4922 Mon to Fri 9 to 5 EST (202-366-4488 for Washington DC residents)
Hazardous Materials Registration
Are you required to be registered? If so, how do you go about it?
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All across the nation, Hazardous Materials Enforcement complaints are investigated by:
Emergency Response Guidebook 2008 cover

The Emergency Response Guidebook (ERG) is for use by first responders at the scene of a transportation incident involving hazardous materials.