What is the meaning of the term dangerous goods in transportation?

• A. A classification by the shipper based on color.
• B. Any material shipped by air only.
• C. Substances or articles that pose risk to health, safety, property, or the environment during transport.
• D. Items that require refrigeration during transit.

Answer: (C)

Dangerous goods in transportation are substances or articles that pose risk to health, safety, property, or the environment during transport. This definition underpins how regulations govern their movement: they must be properly classified by risk, packaged securely, labeled with hazard information, accompanied by appropriate shipping documents, and handled by trained personnel across any mode of transport. Other options don’t fit because danger isn’t determined by color, dangerous goods aren’t limited to air shipments, and refrigeration needs don’t define whether something is dangerous.