What does a yellow diamond-shaped sign typically indicate?

A yellow diamond-shaped sign is universally recognized as a warning or caution sign. These signs are designed to alert drivers about upcoming hazards or changes in road conditions that require increased caution. For example, they may indicate curves, intersections, pedestrian crossings, or areas where wildlife might cross the road. The color yellow is specifically chosen for its visibility and association with caution, making it an effective way to grab the attention of drivers and prompt them to be more alert as they navigate the roadway. The other options refer to specific traffic regulations or directives, such as speed limits, stopping requirements, or exit signs, which are not represented by this shape and color combination.