When Required by HMR, What Must Packages Containing HazMat Bear?

• A. A Primary Hazard Label and a Hazard Label for all Subsidiary Hazard Classes.
• B. A Shipping Paper Only.
• C. A Hazard Placard Only.
• D. A Label Indicating Shipping Route.

Answer: (A)

Hazard communication on hazmat packages is about clearly identifying the dangers inside so anyone handling or encountering the shipment can respond appropriately. The best answer reflects that a package must show its main danger with a Primary Hazard Label, and it must also display labels for all subsidiary hazards that apply. This combination makes the hazards immediately recognizable at a glance, which is crucial for safe handling, storage, and emergency response.

If a material has more than one hazard, the subsidiary hazard labels convey the additional risks beyond the primary one, ensuring that all hazards are communicated. Some scenarios include a primary label for the main class (like flammable liquid) plus separate subsidiary labels (such as an inhalation hazard) so responders know the full risk profile.

Options like a shipping paper alone, a placard used on vehicles rather than individual packages, or a label indicating a shipping route don’t provide the per-packaging hazard information needed by handlers and responders. Labels on the package are the immediate visual cue that communicates danger.