What does the symbol D indicate in Hazardous Materials Table regarding domestic transportation?

• A. That the shipping name is appropriate for describing materials for domestic transportation
• B. That the material is restricted to international transport
• C. That the material is not hazardous
• D. That the material requires air transport only

Answer: (A)

The symbol tells you how the shipping name listed in the Hazardous Materials Table can be used. When you see D, it means the shipping name shown is acceptable for describing the material for domestic transportation. In other words, for shipments within the United States, that name on the shipping papers, labels, and related documents is appropriate and compliant. This is about naming and description, not about hazard level, packaging, or international versus air transport. For international shipments, you’d need to check other provisions or naming rules, but the D symbol specifically confirms domestic use of that shipping name.