What does the sign warning you to slow down for a winding road look like?

The sign that warns drivers to slow down for a winding road is indeed a yellow diamond sign featuring a squiggly line pointing ahead. This design is standardized to convey danger associated with curves and turns in the road. The diamond shape is commonly used for warning signs, and the yellow color indicates caution. The squiggly line visually represents the approaching winding road, alerting drivers to reduce their speed and prepare for changes in direction ahead.

In contrast, other options do not accurately depict the warning for a winding road. The rectangular sign with sharp curve indicators is not the standard representation for such warnings, while circular signs in red typically denote regulatory information or prohibitions rather than road conditions. The triangular caution sign does not match the established iconography used specifically for winding roads. Thus, the squiggly line on a yellow diamond sign is the most definitive and widely recognized symbol used to instruct drivers to approach winding roads with caution.