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United States Department of Transportation United States Department of Transportation

Hazardous Materials Approvals and Permits Overview

About Permits and Approvals

PHMSA's Approvals and Permits Division is responsible for the issuance of DOT Special Permits and Approvals. A Special Permit sets forth alternative requirements, or variances, to the requirements in the HMR. Federal hazardous materials transportation law authorizes PHMSA to issue such variances in a way that achieves a safety level that is at least equal to the safety level required under Federal hazmat law or is consistent with the public interest if a required safety level does not exist. An approval is written consent, including a competent authority approval, from the Associate Administrator or other designated Department official, to perform a function that requires prior consent under the HMR.

Please contact the Office of Hazardous Materials Safety Approvals and Permits Division with questions.

Last updated: Tuesday, January 28, 2020