The letter T in hazardous materials provisions applies to which mode of transport?

The letter T in hazardous materials provisions specifically pertains to the requirements for transporting hazardous materials in portable tanks. Portable tanks are large containers designed to carry bulk liquids and are typically used for transporting hazardous substances that require special handling and regulations. The "T" designation signifies that the material being transported is subject to additional regulations and standards tailored for portable tanks, which include specifications for tank construction, testing, and labeling to ensure safe transport.

Understanding this classification is critical, as it highlights the unique safety measures and regulatory compliance necessary when hazardous materials are transported in such containers, which differ from other modes or packaging types. The focus on portable tanks emphasizes the importance of adhering to specific safety protocols to mitigate risks associated with hazardous materials in transit.