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Title 49

Displaying title 49, up to date as of 8/14/2026. Title 49 was last amended 8/07/2026.
There have been changes in the last two weeks to Part 171.
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Title 49TransportationPart / Section
Subtitle BOther Regulations Relating to Transportation100 – 1699
Chapter IPipeline and Hazardous Materials Safety Administration, Department of Transportation100 – 199
Subchapter CHazardous Materials Regulations171 – 185
Part 171General Information, Regulations, and Definitions171.1 – 171.26
Subpart AApplicability, General Requirements, and North American Shipments171.1 – 171.14
Subpart BIncident Reporting, Notification, BOE Approvals and Authorization171.15 – 171.21
§ 171.15Immediate notice of certain hazardous materials incidents.
§ 171.16Detailed hazardous materials incident reports.
§§ 171.17-171.18 [Reserved]
§ 171.19Approvals or authorizations issued by the Bureau of Explosives.
§ 171.20Submission of Examination Reports.
§ 171.21Assistance in investigations and special studies.
Subpart CAuthorization and Requirements for the Use of International Transport Standards and Regulations171.22 – 171.26
§ 171.22Authorization and conditions for the use of international standards and regulations.
§ 171.23Requirements for specific materials and packagings transported under the ICAO Technical Instructions, IMDG Code, Transport Canada TDG Regulations, or the IAEA Regulations.
§ 171.24Additional requirements for the use of the ICAO Technical Instructions.
§ 171.25Additional requirements for the use of the IMDG Code.
§ 171.26Additional requirements for the use of the IAEA Regulations.