What type of sign provides general warnings about road hazards?

Yellow signs are used to provide general warnings about road hazards. These signs indicate potential dangers that drivers may encounter ahead, such as sharp curves, pedestrian crossings, or road construction. The use of yellow as a color for warning signs is a standardized practice, as it catches attention and alerts drivers to proceed with caution. This is crucial for safety, as it helps prevent accidents by making drivers aware of any unusual or hazardous conditions on the road that require their attention. The other colors serve different purposes: green signs typically indicate guide information, blue signs convey traveler services, and red signs generally signify prohibitions or important regulations.