Pipeline and Hazardous Materials Safety Administration

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• Hazardous Materials Regulations (Title 49 CFR Parts 100-185)
  
• The links to 49 CFR Parts 100-185 previously available on this page have been replaced with a single link to GPO’s Electronic Code of Federal Regulations (e-CFR) site. This change became effective on October 13, 2006. Questions or concerns may be directed to "One PHMSA" Web Initiative Webmaster. The letters of clarification will continue to be available at the link provided below.



• Letters of Interpretation (Clarifications)
• Interpretations sorted by section number



• Interpretations sorted by corresponding month



• Interpretations Issued by the Office of Chief Counsel



• Current and Frequently Requested Special Permits
            Contains copies of the original documents including signature and date.



• Rulemakings and Federal Register Notices
• Recently published final rules, NPRM's, ANPRM's and other notices sorted by date of issuance



• Hazmat Open Petitions for Rulemaking



• Past and present rulemaking actions affecting the HMR sorted by Docket No. (HM Number)



• Conferences, Training Seminars, and Meetings



• PHMSA's Office of the Chief Counsel
• Hazmat Appeal Decisions
• Preemption Documents



• Contacting the Information Center
  -- The Hazardous Materials Information Center can be contacted on 1-800-HMR-4922 (1-800-467-4922) or 202-366-4488 for Washington DC residents Monday through Friday from 9:00 am to 5:00 pm (EST).



• UN Third Party Certification Agencies (pdf - 39KB)
  -- The agencies listed within this document are certified to perform UN Certified 3rd party testing of non-bulk performance oriented packagings.



• Authorized DOT Cylinder Retesters - U.S. and International



• Proposed Hazardous Materials Transportation Act of 1999



• Proposed Hazardous Materials Transportation Act of 2001



• Federal Hazardous Materials Law (pdf - 283K)



• An Overview of the Federal Hazmat Transportation Law (pdf - 317K)



• National Economic Crossroads Transportation Efficiency Act (NEXTEA) of 1997