In a mixed dangerous goods shipment, which statement best matches the requirement for handling?

• A. All items can mingle freely.
• B. Only certain items may be shipped if they meet relevant allowances and labeling/documentation requirements.
• C. Segregation is only needed for international shipments.
• D. Segregation is optional if containers are large.

Answer: (C)

The main idea here is that mixed dangerous goods must be kept apart to prevent dangerous interactions. Segregation is required for any shipment that contains multiple dangerous goods, and this applies whether you’re shipping domestically or internationally. You determine compatibility using established data and segregation tables, which tell you which classes or divisions can share space and which must be kept separate. This isn’t just about labeling or documentation—it's about how the items are physically arranged and packaged to prevent contact, leakage, or reactions.

So, even if items meet all labeling and paperwork requirements, they still must be placed so incompatible goods don’t touch or come into proximity. Large containers don’t waive this duty, and the idea that such segregation is needed only for international shipments isn’t correct. The correct handling is to plan and execute the shipment with proper classification, labeling, documentation, and, crucially, proper segregation of incompatible goods.