For any amount of hazardous materials within Table 1, what is required before transportation?

• A. Placards are required only for quantities above a specified threshold.
• B. Placards are optional for domestic shipments.
• C. Placards are required only at the origin.
• D. Any amount of hazardous materials within Table 1 must be placarded before transportation.

Answer: (D)

Placing hazard placards communicates the presence and type of hazard to anyone involved in or responding to an incident. For hazardous materials listed in Table 1, there is no minimum quantity that exempts you from placarding. You must display the appropriate placard before transportation, regardless of how much you’re shipping. This ensures emergency responders can quickly assess risk and respond safely. The other ideas imply there are thresholds, that placards are only at the origin, or that placards are optional, which don’t fit because Table 1 items require placards in all cases prior to movement.