United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration, & United States. Department of Transportation. Office of Hazardous Materials Safety (2025). User Guide for Commodity Flow Survey: Expanded HAZMAT Supplement. United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Pipeline Safety Research and Development Program. https://rosap.ntl.bts.gov/view/dot/82010
United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration and United States. Department of Transportation. Office of Hazardous Materials Safety. User Guide for Commodity Flow Survey: Expanded HAZMAT Supplement. United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Pipeline Safety Research and Development Program, 2025. https://rosap.ntl.bts.gov/view/dot/82010.
United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration, et al. User Guide for Commodity Flow Survey: Expanded HAZMAT Supplement. United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Pipeline Safety Research and Development Program, 2025, ROSA P. https://rosap.ntl.bts.gov/view/dot/82010.
The Expanded Hazardous Materials Supplement (EHM) is a survey sponsored by PHMSA’s Office of Hazardous Materials Safety (OHMS) and conducted by the U.S. Census Bureau (Census) as part of the 2022 Commodity Flow Survey (CFS). PHMSA sponsored the survey to collect new data and generate new statistics about businesses that ship hazardous materials (HAZMAT) in the United States, focusing on DOT-regulated packaging. The new data and statistics are valuable to inform agency decision making about the safety of HAZMAT transportation. The EHM can answer high-level questions about HAZMAT shipping in the U.S. as well as more technical, detailed questions specific to geography, commodities, packaging type, and other key variables. This document is meant to guide users through the EHM, describing the scope, data variables, and table-by-table contents.
United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration, & United States. Department of Transportation. Office of Hazardous Materials Safety (2025). User Guide for Commodity Flow Survey: Expanded HAZMAT Supplement. United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Pipeline Safety Research and Development Program. https://rosap.ntl.bts.gov/view/dot/82010
United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration and United States. Department of Transportation. Office of Hazardous Materials Safety. User Guide for Commodity Flow Survey: Expanded HAZMAT Supplement. United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Pipeline Safety Research and Development Program, 2025. https://rosap.ntl.bts.gov/view/dot/82010.
United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration, et al. User Guide for Commodity Flow Survey: Expanded HAZMAT Supplement. United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Pipeline Safety Research and Development Program, 2025, ROSA P. https://rosap.ntl.bts.gov/view/dot/82010.
ROSA P serves as an archival repository of USDOT-published products including scientific
findings, journal articles, guidelines, recommendations, or other information authored or co-authored by
USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to
ensure public access to scientific information.
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.