Which category requires the owner’s signature paperwork in the car for hazardous goods?

• A. Gases
• B. Flammable liquids
• C. Radioactive materials
• D. Explosives

Answer: (D)

Explosives carry the most stringent controls when transporting hazardous goods. Because of the high risk and security concerns, the paperwork that proves the owner has authorized the shipment—often a signed declaration or owner’s signature—must be kept with the vehicle so authorities can quickly verify authorization and contents. This requirement helps ensure accountability and regulatory compliance for such dangerous material.

For other categories, you still have to carry the appropriate shipping papers, but the specific need for the owner’s signature to be kept in the cab is not emphasized in the same way as with explosives.