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Hazmat Approvals

Published by Pipeline and Hazardous Materials Safety Administration | Department of Transportation | Metadata Last Checked: July 30, 2025 | Last Modified: 2025-07-30
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.

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