What criterion is used to group munitions into the same hazard division?

Grouping munitions into the same hazard division is primarily based on their like explosive characteristics. This criterion ensures that munitions with similar properties, such as their potential for danger, sensitivity to stimuli, and types of explosives used, are classified together. Hazard divisions help to establish safety protocols, storage requirements, and handling procedures, ensuring that all items within a division pose similar levels of risk.

The focus on explosive characteristics means that munitions may be assessed for their performance under various conditions, such as detonation or burning traits, which are critical for safe transport and storage. By categorizing munitions this way, it becomes easier to implement safety measures that are appropriate for the specific risks associated with each group.

The other options, while they may have relevance in certain contexts, do not serve as primary criteria for classifying munitions. Geography of use may influence operational factors but does not address the inherent hazards of the munitions themselves. Type of packaging can vary widely even within the same hazard class and does not reflect explosive characteristics directly. Weight might impact transportation logistics but does not define the explosive properties or associated hazards. Thus, explosive characteristics remain the fundamental basis for hazard division classification.