What type of transportation container will not display outer markings or placards indicating a type of hazardous cargo inside?

• A. Intermodal container
• B. Highway container
• C. Aircraft
• D. Ocean container

Answer: (C)

In hazmat transportation, markings and placards are used to quickly identify hazardous cargo on the outside of the packaging or container. Most modes—intermodal (shipping) containers, highway trailers, and ocean containers—are intended to display those external hazard markings so anyone handling them along the route can recognize the contents.

For air shipments, the outer Unit Load Device (ULD) or aircraft interior containers typically do not carry external hazmat placards. The hazard information for air cargo is managed through the shipper’s documentation and the labeling on the inner packaging, rather than on the exterior of the ULD or aircraft. That’s why an aircraft-type container is the one that will not display outer markings or placards indicating the hazardous cargo inside. The other container types are designed to show hazard placards on their exterior to alert ground crews and responders during transport.