What color are general warning signs?

General warning signs are colored yellow because yellow is universally recognized as a cautionary color in road signage. These signs are designed to alert drivers to potential hazards or changes in the driving environment, such as curves, intersections, or pedestrian crossings. The high visibility of yellow in various lighting conditions helps ensure that drivers are more likely to notice these important warnings and respond appropriately. Other colors like red typically indicate prohibitions or stops, blue is used for informational purposes, and green is associated with directional guidance and permitted movements. Hence, yellow is the correct choice for general warning signs, as it effectively communicates caution and prompts drivers to be aware of potential dangers ahead.