Final answer:
Danger signs must have red as the dominant color for the upper panel, with a black outline on the borders and a white lower panel for additional sign wording. This helps ensure that safety messages are universally understood.
Step-by-step explanation:
The question relates to the standard color specifications for danger signs used in safety and health regulations. For these signs, the dominant color required for the upper panel is red. The sign must also have a black outline on the borders, and it is generally expected to have a white lower panel where additional wording can be placed. This design is intended to attract attention and convey a universal signal for caution, alerting people to potential hazards. The use of consistent colors across various environments ensures that the safety messages are universally understood and that people can react quickly and appropriately to avoid danger.
The subject of this question is Geography. Danger signs are a part of transportation and road safety, which falls under the purview of geography.
In terms of colors, yellow is typically the dominant color for the upper panel of danger signs. The black outline on the borders helps to make the sign more visually distinct, while the white lower panel is used for additional sign wording that provides specific instructions or warnings.
For example, a danger sign indicating a curve ahead may have a yellow upper panel with a black outline, and a white lower panel that says 'Reduce Speed' or 'Slow Down.'