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e-CFR 49

49 CFR

What It Is

The Code of Federal Regulations, Title 49, governs the domestic transportation of hazardous materials for all modes of transport to, from, and within the United States.


Who Is Responsible For It

Title 49 is composed of nine volumes. The volumes containing Parts 100-185 for the transportation of hazardous materials are overseen by the Pipeline and Hazardous Materials Safety Administration, which is part of the U.S. Department of Transportation.


What It Says

The 49 CFR addresses key protocols for preparing, shipping, and handling dangerous goods. Any person handling dangerous goods should read, understand, and comply with all elements of the 49 CFR. Some of the highlights include:

  • The description of hazardous materials by class, including explosives, gases, flammable and combustible liquids and solids, poisons, radioactive materials, and corrosive agents.
  • The amount of hazardous materials permitted in certain primary containers as well as the total volume per shipped package.
  • The types of packages and packaging required to safely transport hazardous materials.
  • Testing requirements needed to reach specific performance standards.
  • The documentation required when shipping hazardous materials.
  • The markings and labels required on packaging and the placards required by the carrier.
  • Training and safety plan requirements.


For each type of hazardous material, there are specific rules, and it is the role of the shipper to understand the requirements. In particular, Part 173.22 outlines the shipper’s responsibility inpreparing hazardous materials for transportation. Among other things, the shipper must ensure:

  • The product is classified and described properly.
  • The package or container is an authorized package including being manufactured, assembled, packed, and marked in accordance to regulations.
  • The package has met all the testing requirements listed in Part 178.


Where To Find It

You can find the entire 49 CFR at