What is the purpose of yellow or yellow-green traffic signs?

The purpose of yellow or yellow-green traffic signs is to prepare drivers for what is ahead. These colors signal caution and alert drivers to potential changes in road conditions or upcoming hazards. Typically, yellow signs alert drivers to general caution, signaling that they should be attentive and prepared for changes in road environments, such as curves, intersections, or pedestrian crossings. Yellow-green signs are specifically used for school zones or pedestrian areas and indicate additional caution in these locations due to the presence of children or pedestrians.

In contrast, options stating that signs display traffic regulations or provide directions are associated with different colored signs, like red or blue, which serve distinct purposes related to commands and guidance. The function of warning drivers of hazardous conditions ahead is also similar but is generally more specific to situations requiring immediate attention, like road construction or sharp turns, traditionally marked with other colors such as orange for construction zones. The emphasis for yellow or yellow-green signs is truly on preparing drivers for what lies ahead, ensuring safety and awareness as they navigate different road environments.