What is required on a DOT container?

DOT containers, which are used for the transportation of liquefied petroleum gas (LP gas) and other hazardous materials, have specific regulations to ensure safety and proper identification. One of the key requirements is that certain data must be stamped into the body or collar of the container. This information typically includes details such as the manufacturer's identification, the date of manufacture, service pressure, and specific markings that indicate whether the container is approved for specific materials. This stamping is crucial for tracking and maintaining safety standards for the safe transport of gas.

The other options do not meet the regulatory requirements for DOT containers. Color coding, while helpful for immediate visual identification, is not a mandated requirement by the DOT. A barcode can assist in inventory management but is not necessary for compliance. Plastic wrapping is not relevant to the safety or identification of the container itself and does not play a role in meeting DOT regulations. Thus, the requirement for data to be stamped into the body or collar is fundamental for ensuring safety and compliance with transportation regulations.