Which type of sign typically indicates hazards or changes in road conditions?

Warning signs are specifically designed to alert drivers to potential hazards or changes in road conditions ahead. These signs often feature bright colors, such as yellow or orange, and utilize symbols or messages that clearly indicate a need for caution. They serve a critical purpose in traffic management by providing timely information to drivers about dangers such as sharp turns, pedestrian crossings, or roadway obstructions.

Regulatory signs, while important in regulating traffic behavior, convey rules that must be followed rather than alerting drivers to immediate hazards. Guide signs help with navigation and providing directions or distances but do not indicate hazards. Construction signs, although they do indicate changes due to roadwork, fall under a more specific category and are designed for temporary situations rather than general road condition changes. Thus, warning signs are the most appropriate type of sign for indicating hazards or changes in road conditions.