North Carolina DMV Practice Test

The sign that indicates a winding road ahead is a yellow advisory sign featuring a winding road icon. These signs are designed to warn drivers of upcoming road conditions that may require them to reduce speed or exercise increased caution. The yellow color signals that the information is advisory, highlighting a potentially hazardous situation rather than a strict regulation. The winding road icon clearly communicates the nature of the possible hazard, allowing drivers to prepare for changes in the road layout ahead.

This kind of warning is essential for promoting safety, as winding roads can be difficult to navigate and may have reduced visibility or sharp curves. In contrast, the square red sign is typically reserved for stop signs or yield signs, which convey regulatory commands rather than advisory information. Circular green signs generally indicate directional guidance, such as upcoming exits or routes, while rectangular blue signs often provide information about services available along the route. By understanding these color and shape associations, drivers can quickly identify and respond appropriately to different traffic signs.