If two hazmat items are on the same vehicle and the combined load requires placards, what should be done?

• A. Display appropriate placards for the combined load.
• B. No placards are ever needed.
• C. Placards must always be hidden in the cab.
• D. Placards are only for passenger vehicles.

Answer: (A)

Communicate the hazards of the whole load. When two hazmat items share a single vehicle, you must look at the total amount of hazardous material on board and determine if placards are required for the combined load. If they are, you display the appropriate placards that cover the hazards present in the entire shipment. This means using the correct placards for each hazard class involved and ensuring the signs are visible on the sides and rear of the vehicle. Make sure nothing blocks or covers the placards and that they remain legible, so responders can quickly identify the dangers in an emergency.