[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis
Approvals & Permits

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. Further information regarding the functions of the office and the similarities and differences between special permits and approvals are set forth below.

If you have any questions regarding the information contained below contact the Office of Hazardous Materials Approvals and Permits either by telephone 202-366-4535 or by email form.

Note the data used to populate "Approval Search" is being reconfigured into a new document management system and as a result some of the data posted may be a few weeks out of date. We anticipate that the search feature will be up-to-date by mid-March. If you need information concerning application status that is not available in this search, please contact: PHMSA Approvals@dot.gov or call 202/366-3987. We apologize for any inconvenience.
(Note approved by the Office of Special Permits and Approvals)
Approvals & Permits Safety Action Plan
Similarities and Differences
Similarities and Differences of Permits and Approval Documents
The main difference between a permit and an approval is the fact that an approval document can only be issued if there is a specific approval cite in the Regulations i.e., approved by the Associate Administrator for Hazardous Materials Safety. If there is no approval cited, one must apply for a permit.
Approvals & Permits Safety Enhancement Project

Online Application for New Permits, Modifications and Approvals

NEW Online Application for Permit Renewals and Party Status Requests - provides faster processing/turnaround time, 24/7 access, immediate confirmation and tracking #, ability to attach supporting docs, and ease of submitting multiple applications!

Attention: Please note that there are commercial web sites offering to process Explosives or Fireworks Approval applications. These other sites appear similar to the sanctioned PHMSA website. However, unless you are accessing PHMSA's official On-Line Special Permit & Approval Application System at the following address: https://hazmatonline.phmsa.dot.gov/Online Approvals/pages/welcome.aspx, you are NOT filing an online Explosives or Fireworks application with PHMSA.