What is the primary function of green signs on the road?

Green signs primarily serve to provide directions. They are commonly used to indicate the direction to specific locations, such as cities, highways, and points of interest. This color is associated with guiding drivers and helping them navigate efficiently from one place to another.

While there are other colors for signs that serve different purposes, such as yellow for warnings or white for regulations, green specifically aims to assist with directional information. Therefore, when you see a green sign, you can expect it to guide you toward your destination or illustrate the routes available.