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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...

Approval & Permits Procedures & Policies

The materials contained in these documents consist of guidance and other information for PHMSA's Office of Hazardous Materials Safety (OHMS) and its supporting program offices. This document is issued exclusively for the internal management of PHMSA and the guidance of its officers and...