What is the purpose of a “Caution” sign?

The purpose of a "Caution" sign is to alert drivers to possible dangers ahead. These signs are essential for promoting safety on the road by warning drivers about conditions that may require them to slow down or be more attentive. For instance, caution signs may indicate things like sharp turns, pedestrian crossings, or roadwork in progress. By providing this vital information, caution signs help drivers anticipate potential hazards, enabling them to make safer driving decisions.

The other options do serve different purposes within road signage. For example, directional signs guide motorists on where to go, speed limit signs communicate the maximum allowable speed, and fuel station signs indicate where drivers can find fuel. However, these do not fulfill the primary function of alerting drivers to potential risks, which is specifically the role of a caution sign.