What does a diamond-shaped sign indicate?

Answer: B — Warning of potential hazards ahead

A diamond-shaped sign indicates a warning of potential hazards ahead. These signs are specifically designed to alert drivers to changes in road conditions or obstacles that may require caution. For instance, a diamond sign may warn about curves in the road, slippery surfaces, or the presence of pedestrians. Their bright yellow or orange color further reinforces the necessity for drivers to stay alert for unexpected changes in the driving environment. Regulatory signs, like speed limits, are usually rectangular in shape with specific colors that convey laws drivers must follow. Information signs about upcoming services typically use a different shape, such as square or rectangular, which distinguishes them from warning signs. Lastly, direction signs, which guide drivers to nearby locations, usually have their own unique design and color schemes that do not include the diamond shape. Each shape serves its own purpose in helping drivers navigate safely and effectively on the road.