What type of sign is a yellow sign classified as?

A yellow sign is classified as a warning sign because it is used to alert drivers to potential hazards or changes in road conditions ahead. These signs are crucial for driver safety, as they provide important information that helps vehicle operators anticipate and react to possible dangers, such as curves in the road, pedestrian crossings, or the presence of construction zones.

The choice of yellow specifically conveys caution and is easily recognizable, making it effective in communicating warnings. Drivers are trained to associate yellow with a need for increased awareness and attentiveness while navigating their environment. Therefore, the use of yellow for warning signs is a key safety feature in roadway design, ensuring that all road users can respond appropriately to potential risks.