![[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis](/staticfiles/PHMSA/SiteHeaders/Images/PHMSASiteHeader.gif)
| HM-200 | Hazardous Materials in Interstate Commerce | Feb 18, 1998 |
| HM-201 | Detection and Repair of Cracks, Pits, Corrosion, Lining, Flaws, Thermal Protection Flaws, and Other Defects of Tank Car Tanks | Sep 21, 1995 |
| HM-201B | Shippers: Use of Tank Cars with Localized Thinning | Sep 24, 1990 |
| HM-202 | Standards for Construction of Fireworks and Novelties; Approved for Transportation | Oct 10, 1989 |
| HM-203 | Transportation of Hazardous Materials: Highway Routing | Oct 12, 1994 |
| HM-204 | Recodification of Part 176--Includes Mil. Expl. by Vessel | Jan 21, 1991 |
| HM-205 | Consolidation of Formal Hearing Dockets (OST) | Jun 27, 1990 |
| HM-206 | Improvements to HM Identification Systems | Jun 6, 1992 |
| HM-206A | Central Reporting System | Jun 9, 1992 |
| HM-206B | Misc. Amdts. To Haz Communication System | Jun 11, 2003 |
| HM-206C | Availability of Information for Hazardous Materials Transported by aircraft | Feb 24, 2005 |
| HM-206D | Limited Extension of PIH Labeling Rqmts. | Aug 22, 2001 |
| HM-206E | Revision of the Hazardous Waste Manifes | Aug 8, 2001 |
| HM-206F | Revision of Requirements for Emergency Response Telephone Numbers | Oct 19, 2009 |
| HM-207 | Amendments to HM Procedures and Regulations | Feb 28, 1991 |
| HM-207A | Preemption Standards & Process Streamlining | Aug 1, 1991 |
| HM-207B | Shipping Paper Retention | Sep 12, 2001 |
| HM-207C | Exemptions, Approvals, Registration & Reporting Procedures -- Misc Amdts | Sep 14, 1995 |
| HM-207D | Penalty Action Guidelines | Mar 6, 1995 |
| HM-207E | Hazardous Materials Enforcement -- Ticketing | Aug 21, 1995 |
| HM-208 | Registration of Shippers & Carriers | Oct 10, 1991 |
| HM-208A | Revision of Registration Requirements | Apr 1, 1994 |
| HM-208B | Revision of Registration Requirements | Jan 30, 1995 |
| HM-208C | Hazardous Materials Transportation; Registration and Fee Assessment Program | Apr 15, 1999 |
| HM-208D | Temporary Reduction of Registration Fees | Dec 7, 2000 |
| HM-208E | Miscellaneous Revisions to Registration Requirements | Sep 16, 2002 |
| HM-208F | Registration and Fee Assessment Program | Aug 15, 2002 |
| HM-208G | Registration and Fee Assessment Program | Jun 23, 2009 |
| HM-209 | Public sector training & planning grants | Mar 2, 1992 |
| HM-210 | Clarification of Rqmts for Ltd Qty Comp. Gases | Oct 28, 1991 |
| HM-211 | Marine Pollutants | Jan 31, 1992 |
| HM-212 | Tank cars and Cargo Tank Motor Vehicles Attendance Rqmts. | Sep 14, 1992 |
| HM-213 | Requirements for Cargo Tanks | Dec 4, 2001 |
| HM-213A | Cargo Tank Roll-over Damage Protection Requirements | Nov 16, 1999 |
| HM-213B | Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids | Feb 10, 2003 |
| HM-214 | Oil Pollution Act: Spill Containment and Response Plans | Feb 2, 1993 |
| HM-215 | IMO/ICAO Incorp. | Dec 22, 1992 |
| HM-215A | Incorp. of Latest UN Recommendations | Jul 18, 1994 |
| HM-215B | Harmonizations with UN Recommendations | Oct 25, 1996 |
| HM-215C | Harmonizations with UN Recommendations | Aug 19, 1998 |
| HM-215D | Harmonizations with UN Recommendations | Oct 23, 2000 |
| HM-215E | Harmonization with UN, IMDG, ICAO | Dec 3, 2002 |
| HM-215F | Revision and Reformatting of Requirements for the Authorization To Use International Transport Standards and Regulations | Jan 27, 2006 |
| HM-215G | Harmonization with UN, IMDG, ICAO | Jan 1, 2007 |
| HM-215I | Hazardous Materials: Harmonization With the United Nations Recommendations, International Maritime Dangerous Goods Code, and International Civil Aviation Organization's Technical Instructions | Aug 31, 2006 |
| HM-215J | Hazardous Materials: Revision to Requirements for the Transportation of Batteries and Battery-Powered Devices; and Harmonization With the United Nations Recommendations, International Maritime Dangerous Goods Code, and International Civil Aviation Organization's Technical Instructions; Proposed Rule | Jan 14, 2009 |
| HM-216 | Misc. Rail Changes | Dec 19, 1995 |
| HM-217 | Labeling for 6.1, PG III | Nov 8, 1993 |
| HM-218 | Miscellaneous Amendments | Sep 30, 1999 |
| HM-218A | Unloading IM Portable Tanks on Motor Vehicles | Feb 22, 2002 |
| HM-218B | RSPA-02-13773 [RIN 2137-AD73] | Jan 21, 2003 |
| HM-218C | Miscellaneous Amendments to HMR | Aug 12, 2005 |
| HM-218D | Shipping name and UN identification number for fuel mixtures composed of ethanol and gasoline to help emergency response personnel | Jul 16, 2008 |
| HM-218E | Cargo Tank Motor Vehicle and Cylinder Issues; Petitions for Rulemakings | Apr 12, 2007 |
| HM-219 | Revisions to approvals for Multi-unit tank car tanks | May 8, 1995 |
| HM-220 | Requirements for High Pressure Cylinders | Feb 13, 2002 |
| HM-220A | Rewrite of ยง 173.34 | Oct 1, 1996 |
| HM-220B | Cylinder Requirements | May 23, 1996 |
| HM-220C | Filling of Propane Cylinders | Jan 8, 2002 |
| HM-220D | Reqmnts for Maintenance, Visual Requal., and Repair of DOT Specification Cylinders | Jun 2, 2003 |
| HM-220E | Cylinder Requirements | Jun 12, 2006 |
| HM-220F | Aluminum Cylinders Manufactured of Aluminum Alloy 6351-T6 | Aug 29, 2006 |
| HM-221 | Alternate Standards for Open Head Fiber Drums | Sep 29, 1995 |
| HM-221A | Extension of Authority for Continued Use of Non-spec Fiber Drums | Feb 29, 1996 |
| HM-221B | Use of Non-Spec Open-head Fiber Drum Packaging | Aug 25, 1997 |
| HM-222 | Improving HM Safety Programs | Apr 4, 1995 |
| HM-222A | Elimination of Unnecessary/Duplicate Regulations | Oct 1, 1996 |
| HM-222B | Revision and Clarification of Obsolete/Confusing Regulations | May 30, 1996 |
| HM-223 | Applicability of the HMR to Loading, Unloading, and Storage | Apr 15, 2005 |
| HM-223A | Applicability of the Hazardous Materials Regulations to "Persons Who Offer" Hazardous Materials for Transportation in Commerce | Jul 28, 2005 |
| HM-224 | Temporary Prohibition of Oxygen Generators in Air Commerce | May 14, 1996 |
| HM-224A | Oxygen Generators | Dec 30, 1996 |
| HM-224B | Transportation of Oxygen Cylinders on Aircraft | Sep 28, 2007 |
| HM-224C | Transportation of Lithium Batteries | Apr 2, 2002 |
| HM-224D | Hazardous Materials: Revision to Requirements for the Transportation of Batteries and Battery-Powered Devices; and Harmonization With the United Nations Recommendations, International Maritime Dangerous Goods Code, and International Civil Aviation Organization's Technical Instructions; Proposed Rule | Jan 14, 2009 |
| HM-224E | Transportation of Lithium Batteries | Dec 15, 2004 |
| HM-224G | Chemical Oxygen Generators | Oct 15, 2009 |
| HM-225 | Cargo Tank Motor Vehicles in Liquefied Compressed Gas Service | Feb 19, 1997 |
| HM-225A | Safety Standards for Unloading Cargo Tank Motor Vehicles in Liquefied Compressed Gas Service | Aug 18, 1997 |
| HM-225B | Continued Manufacture of MC-331 Cargo Tanks | Jan 12, 1999 |
| HM-226 | Infectious Substances: International Harmonization and Bulk Packaging | Sep 2, 1998 |
| HM-226 | Infectious Substances: International Harmonization and Bulk Packaging | Sep 2, 1998 |
| HM-226A | Rewrite and Consolidation of Parts 174 and 177 | May 19, 2005 |
| HM-226A | Infectious Substances; Harmonization With the United Nations Recommendations | May 19, 2005 |
| HM-227 | Rewrite and Consolidation of Parts 174 and 177 - Terminated | Oct 1, 2001 |
| HM-228 | Review and revision of Part 175 Revision of Requirements for Carriage by Aircraft | Feb 26, 2002 |
| HM-229 | Revisions to the Incident Reporting Regulations and Incident Report Form (5800.1) | Mar 23, 1999 |
| HM-230 | Compatibility with Latest IAEA and other Miscellaneous Changes of Radioactive Material | Dec 28, 1999 |
| HM-231 | Miscellaneous Packaging Revisions | Sep 1, 2006 |
| HM-232 | Security Requirements for Offerors and Transporters of Hazardous Materials | May 2, 2002 |
| HM-232A | Security Requirements for Motor Carriers Transporting Hazardous Materials | Jul 16, 2002 |
| HM-232B | Revision to Periodic Tire Check Requirement | Jul 16, 2002 |
| HM-232C | Enhancing Hazardous Materials Transportation Security | May 5, 2003 |
| HM-232E | Enhancing Rail Transportation Safety and Security for Hazardous Materials Shipments | Dec 21, 2006 |
| HM-232F | Risk-Based Adjustment of Transportation Security Plan Requirements | Sep 9, 2008 |
| HM-233 | Incorporation of Exemptions Into Regulations | Dec 4, 2003 |
| HM-233A | Conversion of Special Permits into Regulations of General Applicability | Jul 16, 2007 |
| HM-237 | Requirements for Lighters and Lighter Refills | Aug 16, 2004 |
| HM-238 | Requirements for the Storage of Explosives and Other High-Hazard Materials During Transportation | Nov 16, 2005 |
| HM-240 | PHMSA-2005-22208 | Aug 8, 2006 |
| HM-243 | Fuel Cell Cartridges and Systems Transported on Board Passenger Aircraft in Carry-On Baggage | Apr 30, 2008 |
| HM-244 | Minor Editorial Corrections and Clarifications | Oct 18, 2007 |
| HM-244A | Hazardous Materials Regulations: Minor Editorial Corrections and Clarifications | Oct 1, 2008 |
| HM-244B | Hazardous Materials: Minor Editorial Corrections and Clarifications | Oct 16, 2009 |
| HM-246 | Improving the Safety of Railroad Tank Car Transportation of Hazardous Materials | Apr 1, 2008 |