Placarding thresholds require placards when which condition is met?

Placarding thresholds require placards when which condition is met?

• A. Placards are required for all hazmat shipments, regardless of hazard class or quantity.
• B. Placards are required only for international shipments.
• C. Placards are optional if the shipment is small.
• D. Placards are required when the shipment's hazard class and quantity meet regulatory thresholds.

Answer: (D)