What does a yellow diamond-shaped sign indicate?

Answer: B — Warning of potential hazards ahead

A yellow diamond-shaped sign serves as a warning of potential hazards ahead on the roadway. These signs are designed to alert drivers to situations that could require caution, such as curves, intersections, pedestrian crossings, or changing road conditions. Their distinctive shape and bright color are meant to attract attention and communicate the need for vigilance, ensuring that drivers are prepared to respond appropriately to any hazards they may encounter. While speed limit signs are typically rectangular and provide specific regulatory information, yellow diamond signs focus on warning rather than restriction. Information about distances to destinations is conveyed through different signs, usually in different shapes and colors. Likewise, mandatory stop signs are octagonal and are specifically designated to instruct drivers to come to a full stop at intersections.