If a vehicle contains both Division 1.1 and Division 1.2 explosives, what placards are required?

When transporting materials classified under Division 1.1 and Division 1.2 explosives, specific regulations mandate the use of placarding to ensure safety and compliance with hazardous materials handling. Division 1.1 includes explosives that have a mass explosion hazard, while Division 1.2 encompasses explosives that have a projection hazard.

The requirement for explosives placards stems from the need to inform emergency responders and others about the potential dangers associated with transporting these materials. By using the explosives placards, which display a distinct symbol and category number, individuals are alerted to the presence of highly hazardous materials that could pose significant risks in case of an accident or incident.

Other options—such as not needing any placarding, using flammable placards, or general cargo placards—would not appropriately inform about the explosive hazards present. Overall, the use of explosives placards is essential for safety and compliance with regulatory standards when transporting these types of hazardous materials.