Which hazard classes are typically associated with Hopper Cars?

Hopper cars are specialized rail cars designed for transporting bulk materials, and they are particularly associated with various hazard classes that include flammable solids, corrosive materials, and miscellaneous dangerous goods.

The correct classification of hazard classes associated with hopper cars includes class 4, which covers flammable solids that can ignite spontaneously or when in contact with moisture. Class 5 captures oxidizers, which accelerate combustion and pose significant risks during transport. Class 6 includes toxic substances, those that can cause harm or death when inhaled, absorbed, or ingested. Additionally, class 8 pertains to corrosive materials that can cause severe damage to living tissue or materials, while class 9 represents miscellaneous dangerous goods that do not fall neatly into other categories but still pose risks during transportation.

Therefore, the combination of classes 4, 5, 6, 8, and 9 comprehensively represents the range of hazards that can be encountered with the carriers used for bulk materials, justifying the selection of this answer. Understanding these classifications helps ensure safety procedures are adequately followed when loading, unloading, and transporting materials in hopper cars.