DOT Links and Resources

DOT Office of HAZMAT Safety

Click on the above title to reach the homepage of the Pipeline and Hazardous Materials Safety Administration (PHMSA) Office of Hazardous Materials Safety (OHM) for the Department of Transportation (DOT). The OHM formulates, issues and revises Hazardous Materials Regulations (HMR) under the Federal Hazardous Materials Transportation Law. The HMR cover hazardous materials definitions and classifications, hazard communications, shipper and carrier operations, training and security requirements, and packaging and container specifications.

Office of Hazardous Materials Special Permits and Approvals

Click on the above title to reach the homepage of the Pipeline and Hazardous Materials Safety Administration (PHMSA) Office of Hazardous Materials Special Permits and Approvals (OHMSPA) for the Department of Transportation (DOT). Primary responsibility for the issuance of DOT Special Permits (previously known as DOT Exemptions) and Approvals to the Hazardous Materials Regulations (HMR).

Contact OHMSPA

Do you need to contact the Office of Hazardous Materials Special Permits and Approvals (OHMSPA)? Find the address and phone numbers for contacting the divisions of Special Permits or Approvals by clicking the above title.

Organization Chart with Contact Information

Need a quick-reference chart that shows the organizational structure of the Office of Hazardous Materials Safety with contact information? Click the title above. Also checkout the About page at http://www.phmsa.dot.gov/hazmat/about/org.

Browse or Search List of Approved Special Permits

Click the above title to browse or search through the list of approved special permits on file with the DOT.