Hazmat Approvals
U.S Department of Transportation
Updated Oct 25, 2026
About this dataset
The Pipeline and Hazardous Materials Safety Administration has the primary responsibility for the issuance of DOT Special Permits and Approvals to the Hazardous Materials Regulations (HMR). A Special Permit or Approval is a document which authorizes a person to perform a function that is not currently authorized under the authority of the HMR. Also, in many instances, the Regulations require approvals and/or registrations prior to transportation in commerce. Approvals Data Search tool allows a user to search for Approvals.
Data and resources (1)
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Data Mining Tool
Modified May 25, 2026