Explosives 1.1 must not be transported in vehicle combinations that include which type of material?

• A. Class 7 (radioactive) materials
• B. Flammable liquids
• C. Nonhazardous solids
• D. Corrosives

Answer: (A)

Explosives with a mass explosion hazard (1.1) require strict separation from other materials because an accidental detonation could cause widespread damage and create additional hazards, such as dispersing any surrounding contents. The combination with radioactive materials is especially prohibited because a blast could spread radioactive contamination and complicate emergency response, containment, and decontamination efforts. The shielding and containment used for radioactive shipments would be compromised by an explosion, and the radiation hazards would be amplified for responders and the surrounding area.

Other material types may have compatibility rules in some cases, but the pairing with radioactive materials is not allowed due to the dual hazards of a powerful blast and radioactivity.